TextBox accepts only integer values using C#.NET

It shows to access only integer values using C#.NET

Keywords: Integer, textbox, .NET, CSharp.NET

Write the code in keypress event of textbox

if (!char.IsControl(e.KeyChar)

         && !char.IsDigit(e.KeyChar)

         && e.KeyChar != '.')

            {

                e.Handled = true;

            }

            // only allow one decimal point

            if (e.KeyChar == '.'

                && (sender as TextBox).Text.IndexOf('.') > -1)

            {

                e.Handled = true;

            }

 

Here the complete Code to accept only integer value

 

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 textcsharp

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)

        {

            if (!char.IsControl(e.KeyChar)

         && !char.IsDigit(e.KeyChar)

         && e.KeyChar != '.')

            {

                e.Handled = true;

            }

            // only allow one decimal point

            if (e.KeyChar == '.'

                && (sender as TextBox).Text.IndexOf('.') > -1)

            {

                e.Handled = true;

            }

        }

    }

}

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