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HtmlInputCheckBox.Checked Property

Gets or sets a value indicating whether the HtmlInputCheckBox is selected.

Namespace:  System.Web.UI.HtmlControls
Assembly:  System.Web (in System.Web.dll)

public bool Checked { get; set; }
<asp:HtmlInputCheckBox Checked="True|False" />

Property Value

Type: System.Boolean
true if the HtmlInputCheckBox control is selected; otherwise, false.

Use this property to determine whether the HtmlInputCheckBox control is selected. This property can also be used to programmatically set the state of the HtmlInputCheckBox control.

The following code example demonstrates a set of responses to users selecting from a group of HtmlInputCheckBox controls.

<%@ Page Language="C#" %>

<!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"  >
  <script language="C#" runat="server">

    protected void SubmitBtn_Click(object sender, EventArgs e)
    {
      if (Basketball.Checked)
      {
        // You like basketball
      }

      if (Football.Checked)
      {
        // You like football
      }

      if (Soccer.Checked)
      {
        // You like soccer
      }

    }
</script>
    <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
       <form id="Form1" method="post" runat="server">
         Enter Interests:  
         <input id="Basketball" checked="checked" type="checkbox" runat="server" /> Basketball
         <input id="Football" type="checkbox" runat="server" /> Football
         <input id="Soccer" type="checkbox" runat="server" /> Soccer

         <input id="Button1" type="button" value="Enter" onserverclick="SubmitBtn_Click" runat="server" />
        </form>
    </body>
 </html>
   

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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