ListControl.SelectedItem Property
.NET Framework 4.5
Gets the selected item with the lowest index in the list control.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in System.Web.dll)
The following example demonstrates how to use SelectedItem to get the individual properties of the currently selected item in the RadioButtonList and to display that item and its value.
<%@ Page Language="C#" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <!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"> ICollection CreateDataSource() { DataTable dt = new DataTable(); DataRow dr; dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32))); dt.Columns.Add(new DataColumn("StringValue", typeof(string))); dt.Columns.Add(new DataColumn("DateTimeValue", typeof(DateTime))); dt.Columns.Add(new DataColumn("BoolValue", typeof(bool))); dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double))); for (int i = 0; i < 9; i++) { dr = dt.NewRow(); dr[0] = i; dr[1] = "Item " + i.ToString(); dr[2] = DateTime.Now; dr[3] = (i % 2 != 0) ? true : false; dr[4] = 1.23 * (i+1); dt.Rows.Add(dr); } DataView dv = new DataView(dt); return dv; } void Page_Load(Object sender, EventArgs e) { if (!IsPostBack) { RadioButtonList1.DataSource = CreateDataSource(); RadioButtonList1.DataTextField="StringValue"; RadioButtonList1.DataValueField="CurrencyValue"; RadioButtonList1.DataBind(); } } void Index_Changed(Object sender, EventArgs e) { Label1.Text = "You selected " + RadioButtonList1.SelectedItem.Text + " with a value of $" + RadioButtonList1.SelectedItem.Value + "."; } </script> <head runat="server"> <title>ASP.NET Example</title> </head> <body> <form id="form1" runat="server"> <asp:RadioButtonList id="RadioButtonList1" OnSelectedIndexChanged="Index_Changed" AutoPostBack="true" runat="server"/> <br /> <asp:Label id="Label1" runat="server"/> </form> </body> </html>
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.
