RadioButtonList ClearSelection() Method
The following asp.net c# example code demonstrate us how can we deselect/unchecked a RadioButtonList
server controls programmatically at run time. RadioButtonList is an asp.net list web server control.
RadioButtonList can contains one or more items.
Web users can select/checked only one item from RadioButtonList at a time. .Net RadioButtonList control render a Radio Group on web browser. So if we select an item from RadioButtonList control, then we cannot deselect the RadioButtonList control; but we can change the item selection.
Sometimes, .net developers want to provide the facility to their users to deselect a RadioButtonList control when users already selected an item. We can deselect/unchecked a RadioButtonList control's selection by calling its ClearSelection() method. When we call the ClearSelection() method, then the RadioButtonList goes to initial state and deselected.
Web users can select/checked only one item from RadioButtonList at a time. .Net RadioButtonList control render a Radio Group on web browser. So if we select an item from RadioButtonList control, then we cannot deselect the RadioButtonList control; but we can change the item selection.
Sometimes, .net developers want to provide the facility to their users to deselect a RadioButtonList control when users already selected an item. We can deselect/unchecked a RadioButtonList control's selection by calling its ClearSelection() method. When we call the ClearSelection() method, then the RadioButtonList goes to initial state and deselected.
RadioButtonListClearSelection.aspx
<%@ Page Language="C#" AutoEventWireup="true" %>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
RadioButtonList1.ClearSelection();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>How to use RadioButtonList ClearSelection in asp.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:OliveDrab; font-style:italic;">
How to use RadioButtonList
<br /> ClearSelection in asp.net
</h2>
<hr width="350" align="left" color="Olive" />
<asp:RadioButtonList
ID="RadioButtonList1"
runat="server"
RepeatColumns="2"
Font-Names="Ms Sans Serif"
Font-Size="Large"
>
<asp:ListItem Text="LemonChiffon"></asp:ListItem>
<asp:ListItem Text="LightGray" Selected="True"></asp:ListItem>
<asp:ListItem Text="LightYellow"></asp:ListItem>
<asp:ListItem Text="PaleTurquoise"></asp:ListItem>
<asp:ListItem Text="PeachPuff"></asp:ListItem>
</asp:RadioButtonList>
<br />
<asp:Button
ID="Button1"
runat="server"
OnClick="Button1_Click"
Text="Clear Selection (Deselect RadioButtonList)"
Height="45"
Font-Bold="true"
ForeColor="DodgerBlue"
/>
</div>
</form>
</body>
</html>

