C# finally

C# finally block is used to execute important code which is to be executed whether exception is handled or not. It must be preceded by catch or try block.

C# finally example if exception is handled

1. using System;  
2. public class ExExample  
3. {  
4.     public static void Main(string[] args)  
5.     {  
6.         try  
7.         {  
8.             int a = 10;  
9.             int b = 0;  
10.             int x = a / b;  
11.         }  
12.         catch (Exception e) { Console.WriteLine(e); }  
13.         finally { Console.WriteLine("Finally block is executed"); }  
14.         Console.WriteLine("Rest of the code");  
15.     }  
16. }  

Output:

System.DivideByZeroException: Attempted to divide by zero.
Finally block is executed
Rest of the code

C# finally example if exception is not handled

1. using System;  
2. public class ExExample  
3. {  
4.     public static void Main(string[] args)  
5.     {  
6.         try  
7.         {  
8.             int a = 10;  
9.             int b = 0;  
10.             int x = a / b;  
11.         }  
12.         catch (NullReferenceException e) { Console.WriteLine(e); }  
13.         finally { Console.WriteLine("Finally block is executed"); }  
14.         Console.WriteLine("Rest of the code");  
15.     }  
16. }  

Output:

Unhandled Exception: System.DivideBy