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[Solved] MaintainScrollPositionOnPostback not working with RadComboBox

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ComboBox

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

Craig Wallace asked on 04 Aug 2010, 02:22 PM

Hi,

The standard .net MaintainScrollPositionOnPostback page attribute does not seem to work with RadComboBox. It works fine with the standard asp:dropdownlist. The attached code leaves the user at 'top'.

<%@ Page Language="C#" AutoEventWireup="true" MaintainScrollPositionOnPostback="true" CodeBehind="WebForm7.aspx.cs" Inherits="MyProject.WebForm7" %>

<!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 runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

</telerik:RadScriptManager>

<p>top</p>

<p> </p>

<telerik:RadComboBox ID="rcb1" runat="server" AutoPostBack="true">

<Items>

<telerik:RadComboBoxItem Text="one" />

<telerik:RadComboBoxItem Text="two" />

</Items>

</telerik:RadComboBox>

</div>

</form>

</body>

</html>

And this code returns the user to the bottom of the page:

<%@ Page Language="C#" AutoEventWireup="true" MaintainScrollPositionOnPostback="true" CodeBehind="WebForm7.aspx.cs" Inherits="MyProject.WebForm7" %>

<!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 runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

</telerik:RadScriptManager>

<p>top</p>

<p> </p>

<asp:DropDownList ID="dl1" runat="server" AutoPostBack="true">

<asp:ListItem Text="one"></asp:ListItem>

<asp:ListItem Text="two"></asp:ListItem>

</asp:DropDownList>

</div>

</form>

</body>

</html>

I am using version 2010.2.713.40.

Is this a known issue with RadComboBox?

Thanks.

4 Answers, 1 is accepted

answered on 06 Aug 2010, 01:21 PM

Hi there,

We recently found a similar issue in RadComboBox however I was unable to reproduce it with your code.

Please try putting the following code on your pages:

Telerik.Web.UI.RadComboBox.prototype.postback = function (command) {

if (!this._postBackReference) return;

var postbackFunction = this._postBackReference.replace("arguments",

Sys.Serialization.JavaScriptSerializer.serialize(command));

if (Telerik.Web.UI.RadComboBox.isIEDocumentMode8())

this.get_element().focus();

eval(postbackFunction);

};

If it works, then then you can download the latest internal build to obtain the fixed version.

Sincerely yours,
Simon
the Telerik team

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