Assign Different Client Events for Different Controls
In order to assign different client-events to different AJAX-enabled controls, you can use the approach shown in Example 1 .
Example 1: You can determine the target control of the AJAX request using the client-side events of the RadAjaxManager.
<telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel1" ClientEvents-OnRequestStart="Start" ClientEvents-OnResponseEnd="End">
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
<asp:ListItem>111</asp:ListItem>
<asp:ListItem>222</asp:ListItem>
</asp:DropDownList>
</telerik:RadAjaxPanel>
<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
<script type="text/javascript">
function Start(sender, arguments) {
if (arguments.EventTarget == "<%= Button1.UniqueID %>") {
alert("StartButton");
}
if (arguments.EventTarget == "<%= DropDownList1.UniqueID %>") {
alert("StartDropdown");
}
}
function End(sender, arguments) {
if (arguments.EventTarget == "<%= Button1.UniqueID %>") {
alert("EndButton");
} if (arguments.EventTarget == "<%= DropDownList1.UniqueID %>") {
alert("EndDropdown");
}
}
</script>
</telerik:RadCodeBlock>
This way the DropDownList and the Button will have different client-events although they are using the same RadAjaxManager or RadAjaxPanel .