C# Exceptions – Try..Catch

C# Exceptions – Try..Catch

Exceptions in C# are runtime errors that occur during program execution.
The try..catch block is used to handle exceptions and prevent the program from crashing.

 Syntax

• try → Contains code that might throw an exception

• catch → Handles the exception

• finally → Always executes, used for cleanup

 Basic Example

Output:

 Multiple Catch Blocks

You can handle different exceptions separately:

 Catching All Exceptions

✔ Exception is the base class for all exceptions.

 Using Finally

• finally block always executes, even if no exception occurs

• Useful for closing files, database connections, or releasing resources

Throwing Exceptions

You can throw your own exceptions using throw:

 Custom Exception

Common Mistakes

❌ Ignoring exceptions (no try..catch)
❌ Catching generic exceptions unnecessarily
❌ Not using finally to release resources

Summary

• Exceptions = runtime errors

• try..catch handles exceptions

• finally executes always

• Use specific exceptions first, general exceptions later

• Can throw custom exceptions for validation