How to check If checkbox Is checked in asp.net

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 Check If checkbox is checked in asp.net using C#:



CheckBox is an asp.netweb server control present in .net platform. Checkbox control allow  to user (web site visitor) to check (select) a particular item on page as like  true or false condition.  so the checkbox control create a square box on web page  that allow user to switch between a true or false condition. In this asp.net tutorial we also provide many post related to check box like "how to use check box with in gridview control in asp.net" and how to use check box in gridview header Example and "how to check validation of checkbox control" and using checkbox in asp.net example.

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Checkbox control  properties:

the checkbox control has many properties that gives to facility to user  to change style such as BackColor, BorderColor,BorderStyle, CssClass, BorderWidth, EnableTheming,  SkinID, Font, Width,Height, ForeColor, ToolTip,etc.

Check If checkbox is checked:


if we want to determine whether checkbox is selected then we need to use the checkbox Checked property.  checkbox AutoPostBack property value true enable automatic refers the web page when selected.Asp.net developers can write an event handler for CheckedChanged event.

Example of checkbox.aspx page code in asp.net :


<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Exampleofcheckbox.aspx.cs" Inherits="Exampleofcheckbox" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div align="center">
    <h1> Example of Checkbox in asp.net</h1>
        <asp:CheckBox ID="CheckBox1" runat="server" Font-Size="Large"
            Text="Select this " />
        <br />
        <br />
        <asp:Label ID="Label1" runat="server" ForeColor="Red"></asp:Label>
        <br />
        <br />
        <asp:Button ID="Button1" runat="server" Font-Bold="True" Font-Size="Large"
            Height="41px" onclick="Button1_Click" Text="Submite" Width="94px" />
    </div>
    </form>
</body>
</html> 
checkbox Is checked in asp.net
Checkbox Is checked in asp.net

Checkbox.aspx page C# code in asp.net :


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class Exampleofcheckbox : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (CheckBox1.Checked == true)
        {
            Label1.Text = "check box selected.";
        }
        else
        {
            Label1.Text = "check box not selected.";
        }
    }
}



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