When changing the theme to a dark theme the Rich text editor appears to have an issue converting the Styles tab as below. Expected to see conversion from light theme styles to dark themes styles.

Show substitute image when the image from the document cannot be rendered 

Make the image loading async and consider reducing their size like MS Word

Add only a RichTextEditorRibbonBar without any other control on the form. If you run the application you will notice that it loads more than one second. We should investigate if it is possible and how to improve the initialization time.

To reproduce: 

public RadForm1()
{
    InitializeComponent();
    radRichTextEditor1.CommandExecuted += RadRichTextEditor1_CommandExecuted; 
    radRichTextEditor1.ActiveDocumentEditorChanged += RadRichTextEditor1_ActiveDocumentEditorChanged;
}

private void RadRichTextEditor1_ActiveDocumentEditorChanged(object sender, Telerik.WinForms.Documents.UI.ActiveDocumentEditorChangedEventArgs e)
{
    e.OldActiveEditor.CommandExecuted -= RadRichTextEditor1_CommandExecuted;
    e.NewActiveEditor.CommandExecuted += RadRichTextEditor1_CommandExecuted;        
}

 
private void RadRichTextEditor1_CommandExecuted(object sender, Telerik.WinForms.Documents.RichTextBoxCommands.CommandExecutedEventArgs e)
{
    if (e.Command is InsertPictureCommand)
    {

        var imageInline = this.radRichTextEditor1.DocumentEditor.Document.CaretPosition.GetPreviousInline() as ImageInline;
        if (imageInline != null)
        {
            imageInline.Size = new Telerik.WinControls.RichTextEditor.UI.Size(50, 50);
        }
    }
}

According to the Office Open XML specification, the attributes must be used with the prefix of their namespace to ensure that the unique attribute is used. However, some tools generate invalid documents without that prefix. RadRichTextBox throws ArgumentException in such cases. Enable the control to handle similar scenarios without errors.

To reproduce the problem create new blank Word document (from MS Word). Hold Alt key and type 0268. You will see a letter Č (Latin letter C with caron). In Visual Studio create a Word-inspired project, and run it. Copy the text from Word document to the Telerik RTF editor. Now in Telerik RTF editor change the font of this letter to Algerian. I have Algerian font with my Office 2013, so I hope you'll have it too; you can use Symbol font instead of Algerian for the same result. My Algerian font does not support letter Č, so in Telerik RTF editor I will see a narrow empty box (also called "tofu") instead of letter Č.

To reproduce: 

• Add a table and select 3 rows.
• From the context menu select Delete Row
• Only one row is deleted

One cannot paste when the AutomaticallyLoadFormatProviders property is false. Even if you register the format providers manually: 

public MainWindow()
{
    DocumentFormatProvidersManager.AutomaticallyLoadFormatProviders = false;
    DocumentFormatProvidersManager.RegisterFormatProvider(new HtmlFormatProvider());
    DocumentFormatProvidersManager.RegisterFormatProvider(new RtfFormatProvider());
    DocumentFormatProvidersManager.RegisterFormatProvider(new DocxFormatProvider());
    DocumentFormatProvidersManager.RegisterFormatProvider(new Telerik.Windows.Documents.FormatProviders.Xaml.XamlFormatProvider());
    InitializeComponent();
}

Bookmarks are not imported and missing from a specific document scenario.

Workaround: Import and then export the document using the WordsProcessing library and then open it with the editor.

Add support for embedded objects

Right-click on header/footer usually does nothing. If we double-click them we enter their edit mode. After we close header and footer and right-click on them we get context menu as if we are still in edit mode. If we scroll out of view of header/footer, and then back in, right-click will again do nothing.

Also, separate but similar bug, in demo document's footer there is a three-column table. It is possible to resize with the mouse all the columns widths, and even the row height. Mouse will change shape, as if in edit mode. It is not necessary to enter and leave edit mode like in previous case, the error is observable from the start. But if we scope out and scope back in the changes are undone, in a way like in previous case.

At the moment the table handles the mouse even if the header/footer is not edited.

Hi Team,

 We find out another issue in the RichTextEditor about the Header and Footer Section of the page, we have a scenario in which we have a bigger table in the Footer section in terms of height, and the table going just "Out Of the Box". I tried the same table in the header section I found a similar behavior there also but the major issue is the Footer section where it's going out of the page.

I used the demo Winform application to reproduce this, I am also attaching the source file so you have to open it in the editor on your side to reproduce this issue.

 

Regards

The images are not rendered when using .Net Core

Missing table border resulting from an incorrect table borders inheritance

At this point, the special characters are replaced with their HTML entities. Expose option allowing users to customize or skip this conversion.

If we copy-paste some french text; f.e. generated by https://fr.lipsum.com/:

This is the original text:

"Le Lorem Ipsum est simplement du faux texte employé dans la composition et la mise en page avant impression. Le Lorem Ipsum est le faux texte standard de l'imprimerie depuis les années 1500"

This is what we see if we past it inside the rich text component

Le Lorem Ipsum est simplement du faux texte employé dans la composition et la mise en page avant impression. Le Lorem Ipsum est le faux texte standard de l'imprimerie depuis les années 1500

We need some kind of mechanism to track changes of table cell properties.