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C Sharp Exception Handling Assignment Help
EXCEPTION HANDLING
- Its a run time error which falls at some stage in the implementation of a program.
- For example divide by zero raises an exception
- Exceptions transfers control from one part of a program to another part of a program.
- This mechanism has four keywords associated to it .They are try, catch, finally, and throw.
- try block has exception raising doubtful statements
- In this block exception is activated .It can have one or more catch blocks.
- throw keyword throws an exception
- catch block catches an exception
- more than one statement can be used for a single try statement
- finally block finally executed irrespective of an exception is thrown or not thrown.
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Syntax
try
{
// doubtful statements
} catch ( Exceptionname excp1 )
{
// statements
} catch ( Exceptionname excp2 )
{
// statements
} catch ( Exceptionname excpn )
{
// statements
} finally {
// statements always executed
}
Exception Classes in C#
- Exception
- ApplicationException
- SystemException
- IO.IOException
- IndexOutOfRangeException
- ArrayTypeMismatchException
- NullReferenceException
- DivideByZeroException
- InvalidCastException
- OutOfMemoryException
- System.StackOverflowException
Example
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