I have a page with a combo(ComboBox1) in a xmlhttppanel(XmlPanel1) and also a stand alone checkbox combo(RadComboBox1). After I call XmlPanel1 and select an item from ComboBox1, then select a checkbox item from the RadComboBox1 I get an error.
I have created a very simple example to show the error. Am I doing something wrong?
Uncaught TypeError: Cannot call method 'get_checked' of null
Telerik.Web.UI.WebResource.axd: 3642
the error is stopping my other javascript code from working.
Help!! Marty
I have created a very simple example to show the error. Am I doing something wrong?
Uncaught TypeError: Cannot call method 'get_checked' of null
Telerik.Web.UI.WebResource.axd: 3642
c.RadComboBox.prototype._onCheckBoxCheck=function(f){var d=f.target.nodeName;
if(d=="LABEL"){f.preventDefault();
}var h=this._findNearestItem(f.target);
var j=h!=null?h:this._extractItemFromDomElement(f.target);
if(this.raise_onItemChecking(j,f)){f.preventDefault();
return;
}j.set_checked(!j.get_checked());
this.raise_onItemChecked(j,f);
this._updateComboBoxText();
if(this._checkAllItemsElement!=null){this._updateCheckAllState();
}if(this._postBackOnCheck){var g={Command:"Check",Index:j.get_index()};
this.postback(g);
}};
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Main.aspx.cs" Inherits="Main" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<
html
xmlns
=
"http://www.w3.org/1999/xhtml"
>
<
head
id
=
"Head1"
runat
=
"server"
>
<
title
></
title
>
</
head
>
<
body
>
<
form
id
=
"form1"
runat
=
"server"
>
<
telerik:RadScriptManager
runat
=
"server"
ID
=
"RadScriptManager1"
/>
<
telerik:RadScriptBlock
ID
=
"RadScriptBlock1"
runat
=
"server"
>
<
script
type
=
"text/javascript"
>
function SetValue() {
var panel = $find("<%=XmlPanel1.ClientID %>");
panel.set_value("test");
}
</
script
>
</
telerik:RadScriptBlock
>
<
div
>
<
telerik:RadComboBox
ID
=
"RadComboBox1"
runat
=
"server"
CheckBoxes
=
"true"
EnableCheckAllItemsCheckBox
=
"true"
Width
=
"300"
Label
=
"Select book genres:"
>
<
Items
>
<
telerik:RadComboBoxItem
Text
=
"Arts"
/>
<
telerik:RadComboBoxItem
Text
=
"Biographies"
/>
<
telerik:RadComboBoxItem
Text
=
"Children's Books"
/>
<
telerik:RadComboBoxItem
Text
=
"Computers & Internet"
/>
<
telerik:RadComboBoxItem
Text
=
"Cooking"
/>
<
telerik:RadComboBoxItem
Text
=
"History"
/>
<
telerik:RadComboBoxItem
Text
=
"Fiction"
/>
<
telerik:RadComboBoxItem
Text
=
"Mystery"
/>
<
telerik:RadComboBoxItem
Text
=
"Nonfiction"
/>
<
telerik:RadComboBoxItem
Text
=
"Romance"
/>
<
telerik:RadComboBoxItem
Text
=
"Science Fiction"
/>
<
telerik:RadComboBoxItem
Text
=
"Travel"
/>
</
Items
>
</
telerik:RadComboBox
>
</
div
>
<
div
>
<
input
value
=
"Set Value"
onclick
=
"SetValue(); return false;"
type
=
"button"
/>
<
div
>
<
telerik:RadXmlHttpPanel
ID
=
"XmlPanel1"
runat
=
"server"
OnServiceRequest
=
"XmlPanel1_ServiceRequest"
EnableClientScriptEvaluation
=
"true"
>
<
telerik:RadComboBox
ID
=
"ComboBox1"
runat
=
"server"
>
</
telerik:RadComboBox
>
</
telerik:RadXmlHttpPanel
>
</
div
>
</
div
>
</
form
>
</
body
>
</
html
>
using
System;
using
System.Collections;
using
System.Collections.Generic;
using
System.Linq;
using
System.Text;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
using
Telerik.Web.UI;
public
partial
class
Main : System.Web.UI.Page
{
protected
void
Page_Load(
object
sender, EventArgs e)
{
}
protected
void
XmlPanel1_ServiceRequest(
object
sender, Telerik.Web.UI.RadXmlHttpPanelEventArgs e)
{
ArrayList itemsList =
new
ArrayList();
itemsList.Add(
"Beverages"
);
itemsList.Add(
"Condiments"
);
itemsList.Add(
"Confections"
);
ComboBox1.DataSource = itemsList;
ComboBox1.DataBind();
}
}
the error is stopping my other javascript code from working.
Help!! Marty