It looks like css class that was assigned to ModalBackgroundCssClass property is not applied after asynch postback.
WebDialogWindow is inside an UpdatePanel.
After a asynchronous postback, the dialog window shows up but the ModalBackgroundCssClass css is not applied.
Is WebDialogWindow not compatible with UpdatePanel?
Here is my code
FrontEnd:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div>
<asp:UpdatePanel ID="upanel" runat="server" ChildrenAsTriggers="true">
<ContentTemplate>
<ig:WebDialogWindow ID="WebDialogWindow1" runat="server" Height="300px" Width="400px"
Modal="true" Moveable="true">
<ContentPane>
<Template>
<asp:Button ID="btnOK" runat="server" Text="okay" OnClick="btnOK_Click" />
</Template>
</ContentPane>
</ig:WebDialogWindow>
<asp:Button ID="btnShow" runat="server" Text="show window" OnClick="btnShow_Click" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
Code Behind:
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnShow_Click(object sender, EventArgs e)
{
this.WebDialogWindow1.WindowState = Infragistics.Web.UI.LayoutControls.DialogWindowState.Normal;
}
protected void btnOK_Click(object sender, EventArgs e)
{
this.WebDialogWindow1.WindowState = Infragistics.Web.UI.LayoutControls.DialogWindowState.Hidden;
}