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what are the ways to catch exceptions in C#.net windows application ??

Posted on 2011-02-23
Medium Priority
Last Modified: 2012-05-11
i want to know that what are the types of exceptions ??
and what are the ways to catch exceptions in C#.net windows application ??

in my applications exceptions generate when i click on exe file (packaging file),
but i don't know how to catch that runtime exception ??
Question by:Parth48
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Author Comment

ID: 34960169
here i attach the exception snapshot ....

please refer the attached snapshot ....

and tell me what can i do ??

LVL 12

Expert Comment

ID: 34960211
This should help you out...I know it did me.  Talks about how to handle Unhandled Exceptions.  You don't necessarily have to take screenshots and such...

Expert Comment

ID: 34960217
You need to use a try catch finally statement:

//your code here
catch(Exception ex)
//your exception handing here
//ex.Message is your error
//any code here to clean up anything that may need to be cleaned up
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LVL 12

Expert Comment

ID: 34960234
Sorry, I couldn't find the same video for C#...so here it a converter if you need it.
LVL 11

Accepted Solution

Sudhakar Pulivarthi earned 2000 total points
ID: 34960431

In C# there are many exceptions which are used for handling known/unknown scenarioes in our application which are not the expected behaviour.
Ex: In an ATM when we type incorrect PIN which is not an expected flow will raise to exception, this is an known/ predicted bahaviour during design time.

But there might be some exceptions which occurs like: NullReference/DivideByZero etc. errors which happens in our code. If we know those places then we can handle them as below.

To handle runtime exceptions at application level u can handle it by registering to an event as below:

Usually while coding to avoid application crashes we will put a try catch block at entry point of our application:

static void Main(string[] args)
Control ctrl = new Control();
catch(Exception ex)
// Display/ Log the error occured using properties in ex.

This will catch all the exceptions occured in the app without crashing.
Note: It is good to design by analysing all the exceptions which might occur instead of consuming all of them.

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