Hi Telerik,

I used the old Telerik Silverlight UI to create a simple *.exe file that creates an excel file.   The *.exe uses .NET framework 4 and references the below libraries from the 2017 Telerik Silverlight UI:

using Telerik.Windows.Documents.Spreadsheet;

using Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.xlsx;

This old *.exe no longer works when run on newer Windows 64-bit consoles with .NET 4.5 Framework installed.  The *.exe terminates with the below error stacktrace:

----------------------------

------------------------------

I am thinking it maybe 32-bit to 64-bit compatibility problem.  Either way, there is bad reference from Telerik.Windows.Documents.Spreadsheet.Workbook..ctor()

Let me know if you can help.

Hi,

 We've been using a RadTreeView to display a RadGridView as one of its items, recently we updated to the latest Telerik Silverlight controls and there is a major delay in showing the RadGridView (previously it was pretty instant).  

The RadGridView only has 100 rows - it loads at normal speeds into the tree when collapsed (i.e. not visible).   The problem occurs when the tree is expanded to display the RadGridView.  The UI appears to freeze and to display the 100 rows with 6 columns takes a minimum of 10 seconds (previously 1 or 2).  The memory also jumps considerably when RadGridView finally becomes visible.

// Create the grid view
RadGridView aGridView= new RadGridView();
aGridView.ItemsSource = new Telerik.Data.DataTable(e.Result);

// Attach the grid view to the Tree 
RadTreeViewItem aItem = new RadTreeViewItem();
aItem .Header = " Header Info";
aItem .Items.Add(aGridView);

 As mentioned before, this was working fine previously.  

Thanks
Oliver

Hi.  I have an old Silverlight application that uses the Telerik Silverlight Map control using the Microsoft Bing Map provider.  Silverlight is obsolete, but we are trying to keep it running for as long as we can.

The Telerik Silverlight Bing Map stopped working.  The map control loads, but no map is being displayed.  A http packet trace shows an HTTP 404 error against http://dev.virtualearth.net when requesting clientaccesspolicy.xml.  See screenshot:

Is there a way to fix this?

Hello,

I have an old Silverlight application using the `Windows 7` theme.

In this application, I'm using many controls and the `app.xaml` file contains the following theme files:

      <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/System.Windows.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.Docking.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.GridView.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.ImageEditor.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.Input.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.Navigation.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.RibbonView.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.RichTextBoxUI.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Controls.xaml" />
        <ResourceDictionary Source="/VisManager;component/Themes/Themes/Windows7/Telerik.Windows.Documents.xaml" />
      </ResourceDictionary.MergedDictionaries>

After installation Ui for Silverlight R1 2022 SP1, the application no more starts: it complains about a referenced static resource that is missing, in the `Telerik.Windows.Controls.RichTextBoxUI.xaml` file.

Replacing this file with the one from version R1 2022 makes it work again.

You should really test Silverlight application while you're adding new functions!

Hello,

I have an old Silverlight application with the following in the App.xaml file:

      <Style TargetType="tk:GridViewCell" BasedOn="{StaticResource GridViewCellCoreStyle}" />

After updating to the latest, the application no more works: it crashes as soon it displays a GridView control, without any useful error message. It takes me a long time to find the error because I can no more run the application with a debugger and I have no useful error message.

As the application was running fine before I updated Telerik UI for Silverlight, I suppose that the above line is the culprit. Unfortunately, I don't know the previous version of Telerik UI for Silverlight that was used for the application.

I hope this is enough for you to find the bug.

Best regards

using (Stream stream = viewModel.OpenStream())
                    {
                        if (stream != null)
                        {
                            using (ZipPackage zipPackage = ZipPackage.Create(stream))
                            {
                                zipPackage.AddStream(new MemoryStream(GetXmlData(tutorial)),viewModel.Filename+".xml");
                                 
                            }
                        }
                    }