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;
}
}
}
}