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Allow only Number to textbox

Posted by Satyapriya Nayak Blogs | Windows Forms C# Dec 14, 2012
In this blog we will know how to allow only numbers to textbox.

In this blog we will know how to allow only numbers to textbox.

using System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Windows.Forms;
namespace
Number_Character_validate_Csharp
{
   
public partial class Form1 : Form
   
{
       
public Form1()
       
{
           
InitializeComponent();
       
}
       
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
       
{
           
// Number Validation(only Number allowed)

            if (!System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "\\d+"))
           
{
               
e.Handled = true;
           
}  
       
}
   
}
}

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