C# Checked Statement

In this chapter you will learn:
  • What is the checked statement in C#?
  • What is the benefit of using checked statement in C#?
  • How to use checked statement in C# programming?

The checked statements force C# to raise exception whenever underflow or stack overflow exception occurs due to integral type arithmetic or conversion issues.


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Checked_Statement
    class Program
        static void Main(string[] args)
            int num;
            // assign maximum value
            num = int.MaxValue;
                    // forces stack overflow exception
                    num = num + 1;
            catch (Exception e)


This program raises exception while executing because it is using checked statement that prevent the current execution when stack overflow exception appears.


System.OverflowException: Arithmetic operation resulted in an overflow.
at Checked_Statements.Program.Main<String[] args> in C:Documents and Settings\Steven\My Documents\Visual Studio 2008\Projects\complete c# code\Chapter4\Checked Statements\Checked Statements\Program.cs:line 18


In this chapter you learned what checked statement is and also learned how to use checked statement in C sharp programming. In next chapter you will learn about Unchecked Statement in C#.

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