System.CrossAppDomainMarshaledException Docking

[Marlos Távora]

Hello, I am getting the following message when loading a page in my docking:

System.CrossAppDomainMarshaledException was unhandled

Message: System.ArgumentNullException: Value cannot be null.

Parameter Name: Text

   em System.Windows.Controls.TextBox.set_Text(String value)

   em Cockpit.Controls.ErrorWindow..ctor(String message, String details)

   em Cockpit.App.ReportError(String message, String details)

   em Cockpit.App.Application_UnhandledException(Object sender, ApplicationUnhandledExceptionEventArgs e)

   em MS.Internal.Error.CallApplicationUEHandler(Exception e)

   em MS.Internal.Error.CallAUEHandler(UInt32 hr, UInt32& bIsHandled)

Some idea of the cause of the problem?

My page:

<UserControl x:Class="MyProject.MyView"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:telerikControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
    xmlns:radDock="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Docking"
    xmlns:telerikGridView="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"
    xmlns:telerikNavigation="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"
    xmlns:vm="clr-namespace:Cockpit.ViewModel"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="600">
    <UserControl.Resources>
        <vm:ViewQueryViewModel x:Key="MyViewModel"/>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" DataContext="{StaticResource MyViewModel}">

        <radDock:RadDocking x:Name="radDocking">
        </radDock:RadDocking>
    </Grid>
</UserControl>

My code where initialize the page:

UserControl content = (UserControl)Activator.CreateInstance(typeof(MyView), new object[] { obj.Id });
Document document = new Document(content, obj.Key.ToString(), obj.Name, "/MyProject;component/Assets/Images/Objetos/image1.png");
this.Documents.Add(document);
this.groupDocuments.Items.Add(document);

[Hristo]

Hello Marlos Távora,

Could you send us example were we can reproduce this error?
(You have to open a support ticket in order to attach files)

Kind regards,
Hristo
the Telerik team

[Marlos]

My usercontrol you find yourself within that structure

<radDock:RadDocking x:Name="docking"  Background="{x:Null}" BorderBrush="{x:Null}" BorderThickness="0" Padding="0" Close="docking_Close" Margin="0,5,0,0">
            <radDock:RadDocking.DocumentHost>
                <radDock:RadSplitContainer>
                    <radDock:RadPaneGroup x:Name="groupDocuments"  Background="#eaf1f9" >

                    </radDock:RadPaneGroup>
                </radDock:RadSplitContainer>
            </radDock:RadDocking.DocumentHost>
        <radDock:RadSplitContainer radDock:DockingPanel.InitialSize="225,300" MaxWidth="600"
                    Name="LeftContainer" InitialPosition="DockedLeft">
        ...
        </radDock:RadSplitContainer>
</radDock:RadDocking>

The document is added to the codebehind RadPaneGroup through the following statement:

UserControl content = (UserControl)Activator.CreateInstance(typeof(ViewPanel), new object[] { obj.Id });
                        Document document = new Document(content, obj.Key.ToString(),       obj.Name, "/Cockpit;component/Assets/Images/Objetos/dataconnector.png");
                        this.Documents.Add(document);
                        this.groupDocuments.Items.Add(document);

Where Document class extend RadDocumentPane.

Some idea of the cause of the problem?

[George]

Hello Marlos,

Thank you for getting back to us.

Your code looks fine. I tested your scenario and everything works fine on my side. Could you try with the ddls from our latest release (Q2 2010) whether the problem still persists. We need more detailed information about the issue. If you could give us some a sample project that reproduces the problem it would be very helpful.

I will be glad to assist you further.

Greetings,
George
the Telerik team