# ASP.NET DataValueField Property

Complete ListControl Control Reference

## Definition and Usage

The DataValueField property specifies which field from the DataSource to bind to the Value property of each item in the control.

## Example

The following example uses an XML file to fill the data of a RadioButtonList:

<%@ Import Namespace="System.Data" %>
<script runat="server">
sub Page_Load
if Not Page.IsPostBack then
dim mycountries=New DataSet
mycountries.ReadXml(MapPath("countries.xml"))
rb.DataSource=mycountries
rb.DataValueField="value"
rb.DataTextField="text"
rb.DataBind()
end if
end sub
sub displayMessage(s as Object,e As EventArgs)
lbl1.text="You selected: " & rb.SelectedItem.Text
end sub
</script>
<form runat="server">
<asp:RadioButtonList id="rb" AutoPostBack="True"
runat="server" onSelectedIndexChanged="displayMessage" />
<asp:label id="lbl1" runat="server" />
</form>
Show example »

The XML file used in the example is countries.xml

Complete ListControl Control Reference

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