Visual Studio & Oo Programming

Front 1

What is GAC?

Back 1

The Global Assembly Cache is a well know directory that the CLR can locate and load strongly named assemblies: It's just a directory. In Windows XP you'll find it under C: Windows \\ Assembly

Front 2

What is a strong name?

Back 2

It is a name that has four attributes: File Name minus extension: Version: Culture: Public Key Token

Front 3

Supplemental Reading

What is one way to write solid code?

Back 3

You determine to understand the fundamentals and follow "best practices" which are conclusions that other programmers have come to after years of experience

Front 4

Supplemental Reading

What is compiling code?

Back 4

The process of converting the lines of code written in a computer language into the native language of a computer program.

Front 5

Supplemental Reading

What is a compiler?

Back 5

A complier is a special piece of software that converts the source code you create into code that the computer can understand, and checks for logic and syntax errors.

Front 6

Supplemental Reading

What is an interpreted language?

Back 6

An interpreted language is a language that is compiled into an intermediate language that is then interpreted by each type of computer they reside on.

Front 7

Supplemental Reading

What is a Virtual Machine?

Back 7

A virtual machine is a program that takes the compiled intermediate code and executes it on a particular computer. In .NET it is called the .NET Runtime.

Front 8

Supplemental Reading

What is the intermediate language in .NET called?

In what kind of file does the compiled code reside?

What file extension(s) will the compiled code have?

what ahappens immediately when executing the compiled code?

Back 8

The intermediate language in .NET is called the MSIL, or Microsoft Intermediate language and the compiled code will reside in a file called an Assembly which have an .exe or.dll file extension. When executing the assembly it immediately attempts to load the .NET Runtime and the .Net Runtime then becomes responsible for executing the MSIL code.

Front 9

Supplemental Reading

What is a Software Layer?

Back 9

A software layer is existing code created by other software developers that provides functionality that I, when I sit down to write applications, can use. In .NET this code is know as a library of code called the .NET Framework Class Library, or just the .NET Framework for short and contains thousands of methods for easily performing thousands of tasks.

Front 10

Supplemental Reading

On a piece of paper, draw a diagram of the software layers in a Windows program

Back 10

Your code -> .NET Framework Class Library -> Windows API's -> Many layers that comprise Windows internally -> Binary Instructions (the on and offs)

Front 11

Supplemental Reading

What are 4 benefits of VB.NET as a programming language?

Back 11

1. VB.NET is very English-like language. 2. It is a .Net language. 3. There are many VB programmers and many community resources on the web. 4. Lots of opportunities for VB programmers

Front 12

Supplemental Reading

What is the downside to VB.NET as a programming language?

Back 12

VB.NET is less of a C-style Syntax than C# which means that learning additional languages like Java, C++ and others might be more difficult.

Front 13

Supplemental Reading

What are the benefits of C# as a programming language?

Back 13

C# uses C-style syntax. Very few programmers know just one language

Front 14

Supplemental Reading

Why could C# be considered a better programming language than VB.NET?

Back 14

C# could be considered a better programming language because it doesn't have to support "legacy" code, meaning C# is more streamlined than VB. VB was forced to support many of the older features due to the outcry of some programmers who did not want to re-write large amounts of code in order to take advantage of the .NET Framework. Plus review job listings on Dice.com and Hotjobs.com. You will find that C# developers are in high demand

Front 15

Supplemental Reading

What are four development goals I should adopt?

Back 15

Four development goals I should commit to are:

1. Create software that fulfills requirements and is accurate. 2. Write software that has virtually no bugs. 3. Create software that is usable. 4. Create software that performs well.

Front 16

Supplemental Reading

What is the flawed concept of "Good Enough Software"?

Back 16

"Good Enough Software" is flawed because it is a practice in which you build software the best you can knowing full well that it has problems, but it is the best you can do in the time allotted.

Front 17

Supplemental Reading

The MASTER commitment in learning programming is what?

Back 17

The MASTER commitment in programming is:

I commit to coding correctly and according to a studied and through knowledge of the fundamentals and best practices from day one.

Front 18

How does Object oriented Programming seek to reduce the complexity of creating large applications?

Back 18

Object oriented Programming seeks to reduce the complexity of creating large applications by breaking the application down into smaller, manageable classes of code. Each class represents an idea, whether tangible and concrete (such as a Product or Employee) or conceptual (such as Inventory or Order)

Front 19

Supplemental Reading
What is the basic idea behind Object Oriented Programming?

Back 19

The basic idea behind Object Oriented Programming is that if we can write code that mimics real world objects, like pencils, cars, customers, payments, etc. then it will make programming a lot easier.

Front 20

Supplemental Reading
How might a car illustrate the concept of Encapsulation?

Back 20

Using a car engine to illustrate Encapsulation... the powerful engine and navigation components are encapsulated behind two or three controls that you (the user) work with.

Front 21

Supplemental Reading
Class: Simple definition

Back 21

A simple definition of a class is that it is simply a blueprint. Its job is to define what data it should store (the variables, or rather Fields) and what actions the object should take (the procedures, or rather the Properties and Methods). Since a class is just a blueprint, it is not the actual object. It is just a definition of the object's appearance, behaviors, etc.

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Supplemental Reading
What does a class define?

Back 22

A class defines the fields, properties, methods and events that an object will have.

Front 23

Supplemental Reading
When we talk about "types" we are talking about ________.

Back 23

"Classes"

Front 24

Supplemental Reading
What is the most basic building block of OO Programming?

Back 24

The most basic building block of OO Programming is the Class.

Front 25

Supplemental Reading
A Class defines f_____, p_____, m_____, and e_____ that an object will have.

Back 25

A Class defines fields, properties, methods, and events that an object will have.

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Supplemental Reading
What is a complex type?

Back 26

A complex type is a type or class that we create ourselves.

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Supplemental Reading
How is the NEW keyword used?

Back 27

The NEW keyword is used to create an instance of a class which is an object based on that class.

Front 28

Supplemental Reading
With respect to the creation of objects, what does the term "Reference" mean?

Back 28

The term "Reference" refers to the address in memory where all the information about a newly created object is stored.

Front 29

Supplemental Reading
What are "Fields"?

What is a BEST PRACTICE concerning fields?

What is a BEST PRACTICE concerning the naming convention for private fields?

What is a BEST PRACTICE concerning the naming convention for public fields?

Back 29

"Fields" are simply variables defined within a class. They can be private or public.

BEST PRACTICE: Instead of Public Fields, use Public Properties. In general, keep as many fields and methods private, and make them public only if there is a reason to do so.

BEST PRACTICE
Use an m_ to denote a private field. If the field or method is private, use camel case.

BEST PRACTICE
Public fields, properties or methods should be in Pascal Case.

Camel Case == engineSize or elapsedMileage
Pascal Case == EngineSize or ElapsedMileage

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Supplemental Reading
What is a "Method"?

Back 30

A "Method" is an object oriented way to refer to procedures (or functions).

The terms "Methods", "Procedures", and "Functions" are synonymous. "Methods" is the preferred term.

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Supplemental Reading
Methods can be either P_____ or P_____ scope.

Back 31

Methods can be either Private or Public scope.

Front 32

Supplemental Reading
Give a description of "Encapsulation".

Back 32

Encapsulation is because classes are like mysterious "black boxes" to the code that call them. You know nothing about how the object works except for the Public properties and methods.

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Supplemental Reading
Why would you overload a method?

Back 33

When you create classes, you don't always know how they might be used up front in your application. Sometimes you don't have all the data readily available to you that you would need to call a method, so you need options on how to call the method.

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Supplemental Reading
In the context of overloading a method, what is the key characteristic of the "Method Signature"?

Back 34

In the context of overloading a method, method signature is a technical term that means each method definition must have a different set of parameters.

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Supplemental Reading
What is a "Constructor"?

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A Constructor is a special method that allows me to initialize my fields, or whatever else I may want to do when my object is first created.

In VB.NET I create a Constructor using the New statement

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Supplemental Reading
What is a "Constructor"?

Back 36

A Constructor is a special method that allows me to initialize my fields, or whatever else I may want to do when my object is first created.

In VB.NET I create a Constructor using the New statement

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Supplemental Reading
Why is it a good idea to use Constructors?

Back 37

It is a good idea to use Constructors in order to initialize the private property (private member) values of the new object

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Supplemental Reading
What would be a BEST PRACTICE concerning Constructors?

Back 38

Use Constructors to initialize values for a newly created object. the Constructor is the perfect place to execute code that MUST RUN in order for your object to perform correctly.

Front 39

Supplemental Reading
Write out an example of an overloaded Constructor.

Back 39

This code is executed as soon as I create an instance of the class.

Front 40

Supplemental Reading
The .NET Runtime protects your program's memory. What is the value of this?

Back 40

This prevents memory leaks or other bugs from shutting down the program immediately. This protects the application so that other programs can't corrupt its memory space.

Front 41

Supplemental Reading
What is the .NET Garbage Collector?

Back 41

The Garbage Collector is a process within the .NET Runtime that searches for object references in the code that is no longer needed. When it finds an unused object it disposes of it, or rather, it removes the object from memory.

Hint 41

Use the word "references" in the answer

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Supplemental Reading
What is the relationship between the Garbage Collector and "flags"?

Back 42

As the code is executing, the .NET Runtime will flag those objects that it knows it won't need again, and after a while the Garbage Collector comes through and disposes of all the objects that are flagged for destruction.

Front 43

Supplemental Reading
What would be a BEST PRACTICE concerning Garbage Collection?

Back 43

Don't attempt to help out the process of Garbage Collection by setting objects you are finished with equal to nothing.

Front 44

What is a Destructor?

Back 44

A Destructor is code that is written to clean up your application, which might include closing any open references to files or databases. A Destructor runs just before an object is destroyed.

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Supplemental Reading

How do you create a Destructor?

Back 45

Use the Finalize method in the class.

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Supplemental Reading

Why would you use a Destructor if the class is responsible for opening files?

Back 46

If the class is to be destroyed, then I need to close the files it currently has opened. Not doing so may corrupt the file, or prevent other parts of your application from accessing the file at a later time.

Front 47

Supplemental Reading

Why would you use a Destructor if the class keeps a connection to a database open as long as an instance of the class is being used?

Back 47

It is not a good idea to close the connection of a database this way but it is done and a Destructor could be used to do it.

Front 48

Supplemental Reading

Why might you choose to use a Destructor when your class is responsible for working directly with the Windows Application programming Interface (API)?

Back 48

You may need to carefully "disconnect" from Windows so that the application or Windows (or both) do not become disabled.

Front 49

Supplemental Reading

Write out the code that will create a Region of code.

Back 49

C#
#region
//Code goes here
#endregion

VB
#Region "this is a region"
'Code goes here
#End Region

Front 50

Supplemental Reading Tips

How do you turn on Numbering in the IDE?

Back 50

Tools > Options > Text Editor Basic > Editor > Line Numbering

Front 51

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What is a project?
How do you create a new project?

Back 51

A project is a collection of files that all get compiled together in order to create an executable file whether that's a .exe or .dll file.

There is a special folder called the "bin" folder. If I look in the Debug sub directory of bin I will see the .exe files.

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01
How do you save your work and close the project?

Back 52

I can click the save all button and then I can select "Close Solution" from the File menu. this will unload the project from Visual C#.

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01
How do you reload an existing project?

Back 53

Go to Start, Visual C# 2005 Express and select an existing project, or go to File Open Project and then navigate to the appropriate directory and then open the project. You select the .sln file or select the .vbprj file if VB or the .csprj files if C#.

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01
What is the purpose for a Project?
What is the purpose for a Solution?

Back 54

The purpose of a project is to keep track of all the files and all the code that belongs to a single application.

A solution is another organizational construct that allows us to group multiple projects together. Each project would create it's own executable file but those projects might have interdependencies.

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01
What are some important features about the Solution Explorer?

Back 55

I can open any file in the project by selecting it and then selecting either the code view or designer view.... or I can double click it and the default or designer view will open. I can add or remove files from the project from the Solutions Explorer. To remove I right click and select delete.

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How do you open/view files, add new or existing files, rename and remove files?

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What is the purpose of debugging?

Back 57

Debugging allows me to pause execution and watch each line of code execute so you can pin point problems in your code. this is useful when programs be larger. I set a breakpoint and then step through the code one like at a time.

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02

What is the Tool Strip Container?

Back 58

The Tool Strip Container is a great tool that hosts other controls like the menu strip, the Tool Strip and the Status Strip.

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01
How do I step through each line of code as it executes?

Back 59

After the code encounters a break point and pauses I can then use one of the three debugging icons, Step into (F11), step over (F10), or step out (SHIFT+F11).

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02

What does IDE stand for?
What is the purpose of the IDE?

Back 60

IDE means Interactive Development Environment.

The IDE writes code for me when I work with the visual designer surface, and the Properties window. There are many tools in the IDE. They are windows that are available to perform various tasks.

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What is a status strip?

Back 61

A status strip allows us to send messages to the user.

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02

What do you get by going to View | Document Outline?

Back 62

You get a window in the IDE that shows all your controls in outline form.

Front 63

02
What are the BEST PRACTICES for quick accurate layout of controls on a Windows Form?

Back 63

BEST PRACTICE is to think in terms of columns and rows. Try to make them conform to a logic pattern. Keep the labels on the left and the data controls on the right. Keep the control buttons in the lower right hand corner of the form.

BEST PRACTICE: Stay with the standard fonts and colors.

BEST PRACTICE: Use standard or descriptive names for your controls. Be simple and succinct in your descriptions.

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03
What are events?
What is an event handler?

Back 64

Events are actions a user takes or even actions that happen inside the program itself. Events are triggere in your application. Your application can respond (or ignore) those events.
[I need a better answer to this question]

An event handler defines a section of code that will be triggered and executed whenever that event even is fired. the code you write must reside inside of a code block defined by curly braces. Methods are the basic building blocks of writing code. An Event Handler is a more specific type of an method.

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02

What happens when you go to View|Tab Order?

Back 65

Doing this displays a series of labels on the form that show the tab order for each of the controls. this display allows you to select the control that you want to be in Tab Order 1 and it will change the number to 0. Then you select the next and the next and so on to establish the Tab order you want. when finished select View|Tab Order again to turn the display off.

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03
How do I create comments in C#?
How do I create comments in VB?

Back 66

C#
Use 2 backslashes and then type comment.
// This is my comment
You can create a multi line comment like this:
/* This is a
* multi line
* comment
*/

VB
Use ' to start a comment
' This is a comment in VB

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02

What is a BEST PRACTICE for Tab Order?

Back 67

You generally wan to start in the upper left corner and progress in a logical way down to the lower right corner.

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03
In C# what Function do the curly braces play { }?

Back 68

Curly braces in C# define a block of code or the code block used to organize code... and a code block is anything between two sets of braces.

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03
How do I comment-out / un-comment-out a line of code using the toolbar buttons?

Back 69

I can type in a number of lines and then select the lines and press the "Comment out the selected lines icon to create a comment block. to uncomment them just press the next icon.

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03
How do you find a complete list of potential events for any given control?

Back 70

Select the control and then go to the properties window... at the top select the icon with the lightening bolt and you will see a complete listing of events categorized.

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03
How do you insert a 'hot' hyper link in my code, to reference an article, help or other resource?

Back 71

`Just type a hyperlink inside a comment. Then hold down the control button and click the link and the IDE will open up that website.

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04
How do I create or declare and initialize the value of a variable?

Back 72

You specify the datatype first and the a space and then the name you want to give the variable:

string myStringVariable;

To create, name and initialize a variable in one step do this:

string myInitializedStringVariable = "";

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What is the importance of defining a data type for a particular variable?

Back 73

In order for the computer to reserve the correct amount of space in memory for the variable we need to tell the computer what kind of variable it is.

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04
What is the difference between a string literal and a variable name?

Back 74

A string literal is any fixed set of letters and numbers that is intended to be used as the value of a variable.

The variable is the bucket and the string literal is what can go into the bucket.

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04
What is the distinction between implicit and explicit data type conversions?

Back 75

Implicit is when you are relying upon the compiler to make a conversion for you. Implicit conversion can be dangerous.

Explicit data type conversion require the programmer to write code to perform the conversion.

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04
When do implicit data type conversion happen?

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Why does an implicit data type conversion happen?

Back 77

Implicit data type conversion happens when a source data type does not match the destination datatype but the source datatype can be understood and interpreted by the compiler into the destination datatype

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04
When do I have to explicitly convert a data type?

Back 78

It is actually a good idea to always do an explicit data type conversion rather than rely on implicit conversion. But it is necessary to do explicit conversion when the compiler cannot understand how to make the conversion implicitly. An example might be converting the string "five" into an integer 5. the C# compiler could not implicitly make this conversion.

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04
What happens when a data conversion happens and the target data type allows less information to be stored?

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04
Should I rely on implicit conversion?

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Front 81

04
What is the distinction between expressions and statements?

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What are valid statements?

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Front 83

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What is a Branching statement?

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What kinds of expressions can be evaluated in a branching statement?

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Front 85

When should I select one type of branching statement over the other?

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Front 86

05
What is an array?

Back 86

An array is a collection of related data.

Front 87

05
How do I declare and initialize an array?

Back 87

C#
string[] myArray
This is the way to declare a string array

To initialize the array above:
string[] myArray = ???

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05
How do I reference an array's individual elements?

Back 88

C#
If the array is declared as string[] and has 10 elements and I want to refeence element 8 I would use string[7]

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What are indexes?

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What is the difference between initialized versus sized arrays?

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05
What is a recursion (aka "iteration") statement and how does it work?

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05
Write out the code for each of the following and then describe how they are different:

For Each statement
For...Next
Do While Loop

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05
When would I select one type of recursion statement over an other one?

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06
What is the difference between a class and an object?

Back 94

A class is the blueprint or recipie whereas an object based on the class is a specific instance of the class and has specific values for the properties of the class that make it distinct.

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What is the difference between a field and a property?

Back 95

A field holds on to a value behind the scenes wheeas a property is the public accessor and mutator for that behind the scenes value.

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What is a method?

Back 96

A method is a named block of code that can be called from another part of code. A method can accept parameters which are values that are going to be used in the body of the methods code block to modify how it works. A method can return a value or it can be structured so it does not return a value.

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06
What is the purpose of a method's parameters?

Back 97

A method's parameters are values that are passed into the method to be used in the code to modify how it works.

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06
How would I define a void method?

Back 98

A void method is a method that does not return a value.

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06
What is variable scope?

Back 99

Scope means that the variable can only be used within the context of the code block in which it was defined, or any sub-code blocks that are also defined within the same code block.

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06
What is a code block?

Back 100

A code block is a collection of lines of code that are enclosed in a set of curly braces.

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06
What are some ways I can determine the scope of a variable within a code block?

Back 101

you can determine if a variable is out of scope if intellisense does not become active as you are working with the variable.

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Why is it important to be able to determine the scope of a variable within a code block?

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06
How do I pass parameters into a constructor?

Back 103

The constructor is defined to accept either no arguements or some arguements that are seperated by a comma. These arguements can be static values or they can be variables in which values are passed to the constructor at the time it is called.

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How is an overloaded method represented in Intellisense?

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Intellisense will show the number of overloads and beside each number is a dropdown arrow. When you select the arrow, it will display that particular overload and it's arguements.

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What is the distinction between shared (Static) vs. instance methods?

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What syntax do I use to create a shared method?

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What are visibility modifiers?

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What is the purpose of a visibility modifier?

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What do the words "Public" and "Private" do to my methods, properties and fields?

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How does the concept of Encapsulation affect how I create public properties and private fields?

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When should I use private methods?

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Why would I modify the Set portion of the property definition?

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What is inheritance?

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What is the difference between the base and derived class, or rather the parent and child class?

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What is the concept of specialization?

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What is the syntax to create a class that can be inherited from?

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What is the syntax I use to create a class that inherits from another class?

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Why not just copy and paste code instead of going through the pain of using inheritance?

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How can I override methods of the base class?

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When do I use the protected visibility modifier?

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How is the behavior of a derived class' constructor affected by the base class' constructor?

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What are the benefits of object oriented programming?

Back 122

The benefits begin when designing your application. OO Programming starts with analysis and design. It provides a logical way of breaking down a big problem into small easy to digest bite-size pieces. It's easy to think of the major classes of your application and then start adding proberties and methods to each class charting the interaction between the classes.
1. Provides a process for simplifying the design of an application.
2. keeping functionality confined to a class makes it easy to change the way the objects of that class function.
3. By encapsulating functionality in your class the code that creates and uses an instance of your class might not have to be changed even though you update how your class operates internally.
4. Re-usability

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In nutshell, what is the .NET Framework?

Back 123

1. Framework Class Library (FCL)
2. .NET Runtime host
3. Utilities (Compilers, Code generators, etc.)

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There are three major parts of the .NET Framework. What do these parts do?

Back 124

.NET Framework Class Library (FCL): A series of classes with methods that encapsulate common system or application related functionality.
Think of the FCL as a bunch of classes that are available to your application that I didn't have to write but I get for free just be virtue of fact that I am writing a C# application.

.NET Runtime Host:
Manages permissions granted to applications
Is the 'sandbox' or 'protective bubble' where your applications run
Provides a common system of dat types across all .NET languages (VB.NET, C#, J#, etc.)
Manages memory for applications

.NET utilities: various and sundry compilers and debugging tools. Tools that automatically produce certain types of code or XML, there are so many different utilities.
C:\\WINDOWS\\Microsoft.NET\\Framework\\v2.0.50202 to see all utility applications

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What are the major features of each of the three parts of the.NET Framework?

Back 125

.NET Framework Class Library (FCL): A series of classes with methods that encapsulate common system or application related functionality.
Think of the FCL as a bunch of classes that are available to your application that I didn't have to write but I get for free just be virtue of fact that I am writing a C# application.

.NET Runtime Host:
Manages permissions granted to applications
Is the 'sandbox' or 'protective bubble' where your applications run
Provides a common system of dat types across all .NET languages (VB.NET, C#, J#, etc.)
Manages memory for applications

.NET utilities: various and sundry compilers and debugging tools. Tools that automatically produce certain types of code or XML, there are so many different utilities.
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50202 to see all utility applications

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Explain how a .NET application works.

Back 126

How does a .NET application work?
When you create an application and create an executable how does the .NET Runtime support your abblication. When you compile your application you create an assembly with either a .exe or .dll file extension. The code contained within this file is called intermediate Language (IL). It is temp language that will be compiled a second time when on the host machine the first time it is run.
When the application is running the .NET Runtime will host the assembly

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What is a .NET Assembly?

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What is the purpose of Intermediate Language (IL)?

Back 128

It is temp language that will be compiled a second time when on the host machine the first time it is run.

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What consumes IL and what does it produce?

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The compiler consumes the IL and translates it into code that the host machine can understand.

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What is Just-In-Time compilation?

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What services does the .NET Runtime Host perform?

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What happens if the user of the application does not have the .NET Runtime already installed on their computer? Will my application work? What can I do?

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What is a Namespace?

Back 133

A namespace defines a code block in which your classes must live. It helps you write code such to avoid naming conflicts. A namespace is a fully qualified name. Think of namespaces as full names.

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What purpose does a namespace fulfill?

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It helps you write code in a way that avoids naming conflicts.

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What is the syntax to create a namespace, etc?

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What, by default, is used as the Root Namespace?

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What is a fully qualified namespace?

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Front 138

07 What shortcut can I use to reference a namespace in order to access its classes?

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What is the primary namespace in the Framework Class Library?

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Where would I look to find the default namespaces added to a Windows Form application?

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What are 5 of the most important namespaces in the FCL?

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07
What is the purpose of the System.Web namespace?

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What is the purpose of the System.Net namespace?

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What is the purpose of the System.Windows.Forms namespace?

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What is a database?

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A database is a structured repository for data. You sve information in the database. You read the information from the database. You update the information in the database. And sometimes you need to delete the information. The information is organized so it can be retrieved easily. the information can be sorted, can be grouped, can be related to other data and thereby can be used to analyze data in a countless number of ways.

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What is the purpose of a database?

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Front 147

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How is a database different from a Notepad text file, an Excel spreadsheet, etc?

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What is the benefit of splitting data up into multiple tables?

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What is the concept of Normalization?

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Normalization: The process of determining what information belongs in which tables to minimize redundancy and increase integrity. Inmost cases you can normalize a database with a little common sense. Once you see it done a few times it will make a whole lot more sense.

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How are database columns defined?

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Front 151

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In database, what are the major data types?

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Front 152

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What does it mean for a column to be nullable?

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Front 153

08
define data integrity in simple terms.

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Front 154

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What are keys?

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Front 155

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In database, what is a relationship?

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Front 156

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What is the difference between a primary key and a foreign key?

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Front 157

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What is an identity column?

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Front 158

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What is the purpose of a foreign key constraint?

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Front 159

08
Outline the steps required to create a SQL Server 2005 Express Edition database from both the C# and VB 2005 Express Edition IDE's and the steps required to add and manage it within the project.

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Front 160

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What is the purpose of the Database Explorer?

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Front 161

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In database, how do I created new tables?

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Front 162

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In database, how do I create a relationship between tables?

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Front 163

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In a database, how do I open the table to add data?

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Front 164

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In a database, what happens when I try to add data into a table that conflicts with a foreign key constraint?

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Front 165

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What happens when I try to delete a row that has related data in other tables?

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Front 166

09
What is the concept of databinding?

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Databinding is the behavior of user interface controls to retrieve an display data from a data source without requiring the programmer to worry about all the programmatic details of this process.

It is a feature of you ruser interface controls that allow them to retrieve information from a data source like a database and display that information to an end user. Each control might work a little differently. Some controls will display only one value or rather one field of data from a database. Other controls like the data grid view can display multiple fields or entire rows within its grid.

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In the context of databinding, what are the "players' (data aware form controls, ADO.NET, etc.).

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Front 168

09
What sorts of things does ADO.NET manage for me?

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Front 169

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What is the value of and the reasons for creating applications that interface with a database?

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Front 170

09
Describe the Data Source Configuration Wizard and it's pages and options.

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Front 171

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What is a dataset?

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Front 172

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What is the purpose of the .xsd file?

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Front 173

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What is the purpose of the Data Sources window?

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Front 174

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What is the purpose of a TableAdapter?

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Front 175

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What is the purpose of the Binding Navigator?

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Front 176

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What is the meaning of the word "data source"?

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Front 177

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What is the purpose of the BindingSource on a form?

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Front 178

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How do I manually databind using the properties window and quick tasks window (as opposed to solely using the Data Sources window)?

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Front 179

09
How do I fill a dataset with data from the database?

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Front 180

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How do I save the changes to the data in the dataset BACK into the database?

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Front 181

09
What does the Me keyword in C# represent?

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Front 182

10
How is XML used in the .NET framework?

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Front 183

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What is the strength of XML used in the .NET Framework?

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Front 184

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What are the weakness of XML in the .NET Framework?

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Front 185

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When should I use XML?

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Front 186

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How does XML relate to ADO.NET datasets?

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Front 187

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In the context of XML define these terms:
1. element
2. node
3. root
4. parent
5. child
6. sibling
7. attributes

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Front 188

10
What is the purpose of the .xsd document?

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Front 189

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What does it mean for an XML document to be "valid"?

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Front 190

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What does it mean for an XML document to be well formed?

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Front 191

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Can you identify any of the .NET classes used to open an XML file from disk?

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Front 192

10
How do I read the XML out of the file, navigate and parse through it to grab the values etc?

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Front 193

10
What is the XPath Expression? (I may want to research this further on my own.)

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Front 194

11
How would I describe an "exception"?

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Front 195

11
What is responsible for raising exceptions?

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Front 196

11
What is an Exception object?

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Front 197

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What kinds of information does each Exception object contain?

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Front 198

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What is the significance of the System.exception base class?

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Front 199

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What types of classes derive from System.Exception?

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Front 200

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Why use specialized versions fo the System.Exception base classes?

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Front 201

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How do I catch specialized versions of the Exception class?

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Front 202

11
What is the syntax of the try... catch statement?

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Front 203

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What are some variations on the try...catch statement?

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Front 204

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What are some BEST PRACTICES to keep in mind when handling exceptions?

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Front 205

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Why do you want to handle exceptions instead of leaving them unhandled?

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Front 206

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When does it make sense to leave some lines of code outside of your structured exception handling?

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Front 207

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Why would you throw and exception?

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Front 208

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How do I throw an exception?

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Front 209

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Where do I throw an exception?

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Front 210

What is scope creep?

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Front 211

04
What is Declaring a variable?

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Declaring a variable is the act of allocating space in the computer's memory for values of a specific data type, and giving the variable a name.

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In VB
How do I do an explicit conversion from an string to integer?

How do I do an explicit conversion from integer to string?

Back 212

Dim firstTextBox as Integer = 0
Dim secondTextBox as Integer = 0
Dim result As Integer = 0

firstTextBox = Integer.Parse(TextBox1.Text)
secondTextBox = Integer.Parse(TextBox2.Text)

result = firstTextBox + secondTextBox
Label1.Text = result.ToString()

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In C#

04
In VB
How do I do an explicit conversion from an string to integer?

How do I do an explicit conversion from integer to string?

Back 213

Int firstTextBox;
Int secondTextBox;
Int result;

firstTextBox = Integer.Parse(TextBox1.Text)
secondTextBox = Integer.Parse(TextBox2.Text)

result = firstTextBox + secondTextBox
Label1.Text = result.ToString()

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How do you convert string values into either integer, double or boolean?

Back 214

Integer.Parse(myString)
Double.Parse(myString)
Boolean.Parse(myString)

Front 215

04

How do you convert a numeric value into a string?

Back 215

Dim result As Integer

result.ToString()

Front 216

04

What makes for a well formed line of code from the compiler's perspective?

Back 216

VB
Dim x as integer
x+3

C#
int x
x+3

This is not a statement it is just an expression

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What is a valid statement?

Back 217

A valid statement consist of ...

Declaration --> Dim x as Integer
(or for C#) int x
Assignment --> myInteger = 3
Call --> MessageBox.kShow("Hello World")
New Object--> (Lesson 6)

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04

What is a rule of thumb description of Statements and Expressions?

Back 218

Expressions can be evaluated, Statements can be executed.

Front 219

What are the two parts of a Property description? And what is the function of each?

Back 219

The two parts are the 'get' and 'set'. The get allows us to return the field back when requested. The set allows us to assign to the underlying field value to whatever you want to assign it to.

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What does RDBMS stand for?

Back 220

Relational Database Management System

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What is the theory of an RDBMS?

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Rlational Database theory: Organizing data into tables that can be related together, thus reducing reduncancy and increasing the integrity of the data.

Front 222

Tables

Back 222

A table is the most fundamental database object. It consist of columns and rows (actually records). A single column and a single row is often called a "field" of data.

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How does data binding work?

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There are a series of class in FCL that support this operation. There are a set of classes in the System.data namespace that are referred to as ADO.NET. ADO = Active Data Objects.

ADO.NET begins by managing the connection to the database. A connection includes the process of locating the database either using a file system or a network protocol and it begins the handshaking to speak with the database. As long as a connection is open your application can speak to the database.