Asp.Net CheckBox Control

Asp.Net CS By Example 22 December 2019

The CheckBox Control :

The CheckBox control use we to display, well, a check box. We can use the CheckBox control in a newsletter signup form.

Syntax:

<asp:CheckBox ID="chkNewsletter" runat="server"  />

The CheckBox control supports the following properties (this is not a complete list):

S.N.	Property	Description
1)	ID	Set the uniqe value to control to access in code-behind code.
2)	Text	This use for set or get value from or to CheckBox control.
3)	AccessKey	This property used to specify a key that navigates to the CheckBox control.
4)	TextAlign	Align the label for the check box. Possible values are Left and Right.
5)	AutoPostBack	Enables we to post the form containing the check box back to the server automatically when the CheckBox is checked or unchecked.
6)	Enabled	This used to enable or disable the CheckBox control.
7)	TabIndex	Used to set the tab order of the check box.

The CheckBox control also supports the following method:

S.N.	Method	Description
1)	Focus	Used to set the initial form focus on it.

The CheckBox control supports the following event:

S.N.	Event	Description
1)	CheckedChanged	Raised on the server when the check box is checked or unchecked.

When the AutoPostBack property has the value True, the form containing the check box is
automatically posted back to the server when the check box is checked or unchecked.

Code: CheckBoxDemo01.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CheckBoxDemo01.aspx.cs" 
    Inherits="LearnAsp.Net.Control.CheckBox.CheckBoxDemo01" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:CheckBox ID="chkNewsletter" Text="Receive Newsletter?" runat="server" />
            <br />
            <asp:Button ID="btnSubmit" Text="Submit" OnClick="btnSubmit_Click" runat="server" />
            <hr />
            <asp:Label  ID="lblResult" runat="server" />
        </div>
    </form>
</body>
</html>

Code: CheckBoxDemo01.aspx.cs

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

namespace LearnAsp.Net.Control.CheckBox
{
    public partial class CheckBoxDemo01 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
        }
        protected void btnSubmit_Click(object sender, EventArgs e)
        {
            lblResult.Text = chkNewsletter.Checked.ToString();
        }
    }
}

Output:

Thanks for reading Asp.Net CheckBox Control

22 December 2019

Asp.Net CheckBox Control

Code: CheckBoxDemo01.aspx

Code: CheckBoxDemo01.aspx.cs

Output:

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