Try catch Finally in C#

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I have a small doubt in the Exception handling in C#. In the below code

C#

Try
{

//Throwing Error
}
Catch
{
//Getting Caught
}
Finally
{
int x =3;
}

int x = 5 ;

In Try after throwing an Error which is caught in Catch ,After that Finall Block Executes with Assignment of x=3. and after that next line x=5 is also executed.Program not getting terminated..What might be the reason ?

Posted 27-Aug-12 20:00pm

peru j

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pradiprenushe 28-Aug-12 2:13am

Are you getting exception in try?

[no name] 28-Aug-12 3:25am

I bet your code won't even compile. Guess what?

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Sarrrva · Accepted Answer · 2012-08-27T20:10:00

hi read this!!!

The code inside a finally block will get executed regardless of whether or not there is an exception. This comes in very handy when it comes to certain housekeeping (Memory Clean)functions you need to always run like closing connections.

Now, I'm guessing your question is why you should do this:

C#

try
{
    doSomething();
}
catch
{
    catchSomething();
}
finally
{
    alwaysDoThis();
}

When you can do this:

C#

try
{
    doSomething();
}
catch
{
    catchSomething();
}

alwaysDoThis();

The answer is that a lot of times the code inside your catch statement will either rethrow an exception or break out of the current function. With the latter code, the "alwaysDoThis();" call won't execute if the code inside the catch statement issues a return or throws a new exception.

regards
sarva

Abhinav S · Accepted Answer · 2012-08-27T20:13:00

You have provided a catch block. As a result the program continues normally.
After the error, execution enters the catch block and then runs finally and the line thereafter.

One of the statements mentioned at Exceptions and Exception Handling (C# Programming Guide)[^] is "In many cases, an exception may be thrown not by a method that your code has called directly, but by another method further down in the call stack. When this happens, the CLR will unwind the stack, looking for a method with a catch block for the specific exception type, and it will execute the first such catch block that if finds. If it finds no appropriate catch block anywhere in the call stack, it will terminate the process and display a message to the user.".

If you want to exit the program, re-throw the error from the catch method.

pradiprenushe · Accepted Answer · 2012-08-27T20:19:00

Case1:If your try block doesnt get any exception code after finally block get executed.
Case2:If your try block doesnt get any exception execution goes to catch if present & then goes to finally if present then terminates.

In you case your try block may not giving any exception. Try to get some exception & debug then you understand.
Here if exception occurs execution does not go to int x = 5 ;
If exception not occurs then execution goes to int x = 5 ;
Refer this
http://forums.asp.net/t/1713477.aspx/1

Ganesh Nikam · Accepted Answer · 2012-08-27T20:25:00

Solution 5

hey

i think this will help you

http://stackoverflow.com/questions/833946/in-c-sharp-will-the-finally-block-be-executed-in-a-try-catch-finally-if-an-unh[^]

Posted 27-Aug-12 20:25pm

Ganesh Nikam

Try catch Finally in C#

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