Hello
Here an example exerpt from my code that have the problem. I made a copy of my code removing all the grid part, with no interference made by some javascript code I could have write. Hope, that will be helpfull.
<%@ Page Language="vb"%>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
Public Sub PanelChange(ByVal sender As Object, ByVal e As DirectEventArgs)
Ext.Net.X.Msg.Alert("Show Event", "Show").Show()
End Sub
Public Sub toto(ByVal sender As Object, ByVal e As Ext.Net.DirectEventArgs)
Ext.Net.X.Msg.Alert("BeforeClose Event", "BeforeClose").Show()
End Sub
Public Sub UpdatePanelPreference(ByVal sender As Object, e As DirectEventArgs)
Ext.Net.X.Msg.Alert("Close Event", "Close").Show()
End Sub
</script>
<!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>ResMed Global KPIs</title>
<ext:ResourcePlaceHolder ID="ResourcePlaceHolder1" runat="server" Mode="ScriptFiles" />
<ext:XScript ID="XScript1" runat="server">
<script src="Main.js" type="text/javascript"></script>
</ext:XScript>
<link rel="stylesheet" type="text/css" href="Main.css" />
</head>
<body>
<form id="form1" runat="server">
<ext:ResourceManager ID="ResourceManager1" runat="server" RethrowAjaxExceptions="True">
</ext:ResourceManager>
<%-- Data stores--%>
<div>
</div>
<ext:Desktop
ID="MyDesktop"
runat="server">
<DesktopConfig Wallpaper="images/DesktopImages/RmdDesktop.jpg" WallpaperStretch="True" runat="server" Icons="start-button">
</DesktopConfig>
<Modules>
<%-- dataGrid window--%>
<ext:DesktopModule ModuleID="Data" AutoRun="True">
<Window>
<ext:Window
runat="server"
icon="Table"
X="1"
Y="1"
Hidden="True"
ExpandOnShow="True"
MinHeight="640"
MinWidth="480"
Title="Entity data"
Layout="FitLayout"
Width="1024"
Cls="x-grid-custom"
Height="600"
Collapsible="true"
TitleCollapse="true" Maximized="True">
<Content>
<ext:TabPanel ID="tabMain" runat="server" >
<Items>
<ext:Panel ID="tabOSA" runat="server" Title="OSA" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabMASK" runat="server" Title="Masks" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabVEN" runat="server" Title="Ventilation" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabTPP" runat="server" Title="3rd Party products" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabATS" runat="server" Title="Activity Type split" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabTRS" runat="server" Title="Type of repair split" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabPS" runat="server" Title="Product split" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabFCC" runat="server" Title=" For Call centers" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabLO_OM" runat="server" Title="Order metrics" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabLO_AVA" runat="server" Title="Availability" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
<ext:Panel ID="tabFI" runat="server" Title="Financials" Layout="FitLayout" Closable="true" CloseAction="Hide">
<DirectEvents>
<Show OnEvent="PanelChange"></Show>
<BeforeClose OnEvent="toto" />
<Close OnEvent="UpdatePanelPreference"></Close>
</DirectEvents>
</ext:Panel>
</Items>
</ext:TabPanel>
</Content>
<%--
<TopBar>
<ext:Toolbar ID="tbEntities" runat="server" >
<Content>
<ext:Panel ID="Panel1" runat="server" Layout="ColumnLayout" BaseCls="x-plain" Width="800px" Height="25px">
<LayoutConfig>
<ext:HBoxLayoutConfig Align="Middle" />
</LayoutConfig>
<Items>
<ext:Button ID="btnRestorePanel" runat="server" Text="Restore panel">
<DirectEvents>
<Click OnEvent="btnRestorePanel_Click"></Click>
</DirectEvents>
</ext:Button>
<ext:Button ID="btnShowEntities" runat="server" Text="Show all entities">
<DirectEvents>
<Click OnEvent="btnShowEntities_Click"></Click>
</DirectEvents>
</ext:Button>
<ext:Panel ID="Panel2" runat="server" BaseCls="x-plain" Flex="1" />
<ext:Checkbox ID="chkExpandDefault" runat="server" FieldLabel="Expand my entity">
<DirectEvents>
<Check OnEvent="UpdateExpandDefault"></Check>
</DirectEvents>
</ext:Checkbox>
<ext:Panel ID="Panel9" runat="server" BaseCls="x-plain" Flex="3" />
<ext:Label ID="Label1" runat="server" Text="Red : estimated value" Cls="x-red"></ext:Label>
<ext:Label ID="Label2" runat="server" Text="Blue : measured value" Cls="x-blue"></ext:Label>
</Items>
</ext:Panel>
</Content>
</ext:Toolbar>
</TopBar>
--%>
</ext:Window>
</Window>
</ext:DesktopModule>
</Modules>
</ext:Desktop>
</form>
</body>
</html>
Edit: change code to have shorter one