This is a migrated thread and some comments may be shown as answers.

How to disable AutoPostBack of the RadComboBox through javascript when an item is selected

3 Answers 583 Views

ComboBox

This is a migrated thread and some comments may be shown as answers.

3 Answers, 1 is accepted

answered on 03 Dec 2010, 08:08 AM

Hello Emilo,

I assume, you need a post-back on some event but not when changing the selection in combo and that's why you are setting the AutoPostBack to True.

You can achieve the same functionality with AutoPostBack to false and invoking the postback using built-in javascript method "__doPostBack" method from the desired event (here its OnClientTextChange) and override the RaisePostBackEvent. Perform your code in RaisePostBackEvent function on sever side.

Find the sample code, which post-backs for textchange and not when changing item;

aspx:

<telerik:RadComboBox ID="dropDownListCategory" MarkFirstMatch="True"

EmptyMessage="<--Select One-->" AllowCustomText="true" runat="server" AutoPostBack="false" OnClientTextChange="OnClientTextChange" >

</telerik:RadComboBox>

JavaScript:

function OnClientTextChange(sender, args)

{

__doPostBack('RadComboBox1', '');

}

CodeBehind:

protected override void RaisePostBackEvent(IPostBackEventHandler source, string eventArgument)

{

base.RaisePostBackEvent(source, eventArgument);

if (source == dropDownListCategory)

{

Response.Write("event fired"

); // Your code goes here

}

Thanks,
Princy.