Hi,

I'm new to this forum and fairly new to Umbraco so I hope I've posted this in the right section!

I was wondering whether anyone has come across, and managed to resolve, any trouble using custom user controls that have DevExpress components in Umbraco with Internet Explorer? Using Firefox the user controls can perform callbacks as expected (in this case it is the ASPxGridView and the callbacks involve sorting, paging, etc) but when using Internet Explorer no callbacks are being performed.

The ascx user control is something like (no code in C# code behind other than standard Page_Load) :

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="DxeGridViewControl.ascx.cs" Inherits="UmbracoUserControls.DxeGridViewControl" %>
<%@ Register assembly="DevExpress.Web.ASPxGridView.v9.2, Version=9.2.9.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web.ASPxGridView" tagprefix="dxwgv" %>
<%@ Register assembly="DevExpress.Web.ASPxEditors.v9.2, Version=9.2.9.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web.ASPxEditors" tagprefix="dxe" %>
<dxwgv:ASPxGridView ID="ASPxGridView1" runat="server" SettingsBehavior-AllowSort="true"
    AutoGenerateColumns="False" DataSourceID="SqlDataSource1"
    KeyFieldName="ID">

    <Columns><dxwgv:GridViewDataTextColumn FieldName="Col1" VisibleIndex="1" HeaderStyle-Wrap="True">
        </dxwgv:GridViewDataTextColumn>...etc etc...

</Columns>
</dxwgv:ASPxGridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
    ConnectionString="<%$ ConnectionStrings:DatabaseConnectionString %>"
    SelectCommand="SELECT TOP 100 * FROM dbo.MyTable"></asp:SqlDataSource>

I've also added the DevExpress http module to the Umbraco web.config

<add type="DevExpress.Web.ASPxClasses.ASPxHttpHandlerModule, DevExpress.Web.v9.2, Version=9.2.9.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule" />

As mentioned before this works for Firefox with no issue, however Internet Explorer (tested 6, 7, 8 + compatibility modes) callbacks are not being performed.

Any help on this issue would be greatly appreciated

Chris.