How do I get the commandargument to hold the datatextfield value. If I remove the datatextformatstring, the column shows the value for ID. I want to pass the ID value as the argument. Below produces an argument of {0}.
<telerik:GridButtonColumn CommandArgument="{0}" CommandName="SendEmail" ConfirmText="Do you want to send an email to all residents about this service?" DataTextField="ID" DataTextFormatString="Send Email" Text="SendEmail" UniqueName="column2"></telerik:GridButtonColumn>