C# Exceptions And Data Validation Ch 7

Front 1

Name two subclasses of arithmetic exception

Back 1

OverflowException

DivideByZeroException

Front 2

What are two common properties for all exceptions?

Back 2

Message: gets a message that briefly describes the exception

StackTrace: gets a string that lists the methods that were called before the exception occurred

Front 3

Common method for all exceptions

Back 3

GetType()

Gets the type of the current exception

Front 4

Display a dialog that shows the type of the exception in the title bar and then in the middle displays a brief description and the call stack

Back 4

try{...}

catch(Exception ex)

{

MessageBox.Show(ex.Message + "\n" + ex.StackTrace, "Exception: " + ex.GetType.ToString());

}

Front 5

Show syntax for try-catch-finally that catches multiple exceptions

Back 5

try{...}

catch(ArithmeticException ex){...}

catch(DivideByZeroException ex){...}

catch(Exception ex){...}

finally{//do a thing}

Front 6

syntax for throwing a new exception

Back 6

throw new ExceptionClass([message]);

//the message is assigned to the Message property

Front 7

syntax for throwing an existing exception

Back 7

throw exceptionName;

try{...}

catch(FormatException ex)

{

//do stuff

throw ex

}

Front 8

When should you throw an exception?

Back 8

-When a method encounters a situation where it cannot complete its task

-When you want to generate an exception to test an exception handler

-When you want to catch the exception, perform some processing, and then throw the exception again