- Write tags for Radio Button ajax Modal Popup exnder & PopupControlID following ways
- Add others tags & controls as per your Requirements
- Write Javascript function onOk() & onCancle() in <script> tag
<asp:RadioButton ID="RadioButton1" runat="server" />
<ajax:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="RadioButton1" PopupControlID="panel1"
CancelControlID="btnCancel" OkControlID="btnOK" OnOkScript="onOk()" OnCancelScript="onCancle()"
PopupDragHandleControlID="panel1">
</ajax:ModalPopupExtender>
<asp:Panel ID="panel1" runat="server">
<table style="width: 100%; border-width: 1px; border-color: #666666;">
<tr>
<td class="formtext" style="height: 23px; width: 150px;" align="left">
Give Your Name
</td>
</tr>
<tr>
<td>
<asp:TextBox ID="MyTextBox" runat="server" Height="140px" Width="95%" TextMode="MultiLine"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Button ID="btnOK" runat="server" Text="OK" />
<asp:Button ID="btnCancel" runat="server" Text="Cancel" />
</td>
</tr>
</table>
</asp:Panel>