try-catch-finally (C# Reference)

A common usage of catch and finally together is to obtain and use resources in a try block, deal with exceptional circumstances in a catch block, and release the resources in the finally block.

For more information and examples on re-throwing exceptions, see try-catch and Throwing Exceptions. For more information about the finally block, see try-finally.

Example

public class EHClass
{
 void ReadFile(int index)
 {
 // To run this code, substitute a valid path from your local machine
 string path = @"c:\users\public\test.txt";
 System.IO.StreamReader file = new System.IO.StreamReader(path);
 char[] buffer = new char[10];
 try
 {
 file.ReadBlock(buffer, index, buffer.Length);
 }
 catch (System.IO.IOException e)
 {
 Console.WriteLine("Error reading from {0}. Message = {1}", path, e.Message);
 }
 finally
 {
 if (file != null)
 {
 file.Close();
 }
 }
 // Do something with buffer...
 }
}

C# Language Specification

For more information, see the C# Language Specification. The language specification is the definitive source for C# syntax and usage.

See Also

Tasks

How to: Explicitly Throw Exceptions

Reference

C# Keywords

try, catch, and throw Statements (C++)

Exception Handling Statements (C# Reference)

throw (C# Reference)

using Statement (C# Reference)

Concepts

C# Programming Guide

Other Resources

C# Reference