How to find if the character entered is Digit in C# ?

Published on September 2, 2012 by Senthil Kumar

Filed under C#

Last modified September 2, 2012

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The Char class provides a method Char.IsDigit that lets you find if the character entered in the specid string is a digit or not.

Below is a sample code demonstrating the Char.IsDigit to find if the character entered is Digit in C#.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1
    static class Program
        static void Main()

        static void FindCharacter()
            string str = "3a";
            foreach (var ch in str)
                if (Char.IsDigit(ch))
                    MessageBox.Show(ch.ToString() + " is a Digit");


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