Last Updated: 16 Jan 2020 08:45 by ADMIN
 The scroll is jumping when making a selection and reaching the end of the document (see attached)
Last Updated: 17 Dec 2019 11:11 by ADMIN

I have a RadRichTextEditor. When it contains multiple lines a vertical scroll bar is shown. When I keep writing and press the enter key to insert a carriage return, it starts a new paragraph but the cursor disappears. 

When I press return at the bottom of this control I want the cursor to be kept in sight. See the screenshots I have attached. You can see that after the return you can only see the very top of the cursor, the rest is hidden. You have to actually manually scroll down to get it into view.

When you start typing, this cursor comes into view, but I want it to be in view even if you just press return. Is there a way to get it to do this?

This seems to be the default behavior of this control, as I have created a new application to show this, which doesn't contain any of the formatting which my actual application does.

Last Updated: 25 Nov 2019 13:17 by ADMIN
Created by: KrishTS
Comments: 3
Category: RichTextEditor
Type: Feature Request

Hi Team,


We recently bought your Tool for one our Windows Forms Project work in VS2019 (4.7.2 framework). 

There is a need for us to have Emojis inside the editable Textbox / RichTextEditor in Color.

For example, if we paste Emojis inside the text editor, it should retain the color of the Emoji as it is. 

Currently if we paste the Emoji inside the text editor, its only pasting the Emoji but losing it's color. 

How to retain the color of the Emoji inside the editable Textbox / RichTextEditor ? Is there any property or so we need to set?

The users of our application can paste any kind of Emoji (like inbuilt Windows10 Operating System Emojis etc.,) and there is no limitation for this. 

Kindly advice.


with regards,

Krish TS,

Senior Technical Programmer Analyst,,


Last Updated: 19 Nov 2019 07:34 by ADMIN

In Word, for paragraphs in a list:

1. The bullet/number uses the value of the first line indent

2.1 The text on the first line is aligned according to the left indent when the left indent is smaller than the first line indent (the usual case).

2.2 If the first line indent is smaller than the left indent, the first line aligns with the rest of the text, using the value of the left indent property.

2.3 When there are tab stops, they are used for the position of the text. In RadRichTextBox, the text in the first line always aligns according to the FirstLine indent.

Also, tab stops can be used to position the text after the bullet/number.

Last Updated: 19 Nov 2019 06:48 by ADMIN
Add Paragraph property controlling  whether SpacingBefore / SpacingAfter is applied between paragraphs with the same style.

In MS Word, the corresponding option is controlled with "Don't add space between paragraphs of the same style" checkbox in the font properties dialog - and the paragraph spacing after will not be applied. 

In OOXML, it is described with the w:contextualSpacing element. We don't respect this property on import of such files, and the paragraph spacing is bigger.

Common use case for this feature is that when list is applied to multiple paragraphs, Paragraph List style is applied to the items, and this style has "Don't add space between paragraphs of the same style" applied, so the vertical spacing between the items is smaller.
Last Updated: 07 Nov 2019 14:19 by ADMIN
Release R1 2020 (LIB 2019.3.1111)

The tab order in the dialog is incorrect, the dialog is not focused when shown.


public partial class Form1 : Form
    public Form1()

        radRichTextEditor1.RichTextBoxElement.FindReplaceDialog = new MyFindReplaceDialog();

class MyFindReplaceDialog : FindReplaceDialog
    public MyFindReplaceDialog()
        this.Controls[0].TabIndex = 2; // FindNext button
        this.Controls[1].TabIndex = 3; // Replace Button
        this.Controls[2].TabIndex = 5; // CloseButton
        this.Controls[3].TabIndex = 4; // Replace All button
        //this.Controls[4].TabIndex = 5; // label
        //this.Controls[5].TabIndex = 5; // label
        this.Controls[6].TabIndex = 1; // RepalceWith textbox
        this.Controls[7].TabIndex = 0; // TextToFind  textbox

    protected override void OnShown(EventArgs e)

Last Updated: 09 Oct 2019 11:51 by ADMIN
Release R3 2019 SP1


   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.Export.DocumentThemeExporter.GetFormatScheme()
   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.Export.DocumentThemeExporter.get_FormatScheme()
   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.Export.DocumentThemeExporter.ExportFormatScheme()
   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.Export.DocumentThemeExporter.Export()
   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.Export.DocxExporter.AddXmlContentToPackage(DocxPartExporterBase exporter)
   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.Export.DocxExporter.Export()
   at Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider.Export(RadDocument document, Stream output)

Under Review
Last Updated: 13 Nov 2019 08:32 by ADMIN
Created by: Larry
Comments: 1
Category: RichTextEditor
Type: Bug Report
There appears to be an issue when adding Comments that overlap each other. I will attach a video to my next reply that shows how to replicate the issue.
Last Updated: 05 Sep 2019 10:17 by ADMIN
When deleting all content (e.g. Select All [CTRL+A] + Delete [Del]) in the document, it would be convenient for the user to preserve all formatting (local span formatting + local paragraph formatting + style) applied on the last paragraph. 

This will ensure that the user will continue edit the document with last current font, font family, etc.

If this operation is applied on an empty document, though, the styling of the single paragraph should be reset to the defaults for the document.
Last Updated: 26 Aug 2019 11:41 by ADMIN
When trying to import a document containing bookmark and BookmarkRangeEnd is after the last paragraph, a StackOverflowException is thrown in IntervalNode while trying to rebuild the document cache. (RadDocumentChildrenCache.RebuildTree()).

The same could be observed if the bookmark end is last in the header/footer, between table cells in the RadDocument body, or when all paragraphs after the bookmark range end are hidden (with vanish property).

Workaround: Detect the problematic annotations and remove them:
foreach (var rangeStart in document.EnumerateChildrenOfType<AnnotationRangeStart>())
    if (rangeStart.End == null || rangeStart.End.Parent == null || rangeStart.End.Parent.Parent == null)
        //MessageBox.Show("This indicates a problem.");

Note: Until 2017 R2 SP1 release StackOverflowException is thrown, after this release an ArgumentException should be thrown.
Last Updated: 16 Aug 2019 15:22 by ADMIN
Created by: Stephen
Comments: 5
Category: RichTextEditor
Type: Feature Request

Dear Sir/Madam,


I have a docx document and want to display it in flow layoutmode. It works normally except it cannot show header at the beginning of the document and footer at the end of the document. Please help.

My code is similar as follows (Rte is the RadRichTextEditor control):


DocumentFormatProviderBase provider = new DocxFormatProvider();


Rte.Document = provider.Import([Docx in byte array]);

Rte.RichTextBoxElement.BackColor = Color.White;

Telerik.WinControls.RichTextEditor.UI.DocumentWebLayoutPresenter presenter = (Telerik.WinControls.RichTextEditor.UI.DocumentWebLayoutPresenter)rte.RichTextBoxElement.ActiveEditorPresenter;

presenter.BackColor = Color.White;

presenter.Margin = new Padding(20);



Last Updated: 22 Jul 2019 13:57 by ADMIN
Release R3 2019 (LIB 2019.2.729)

To reproduce:

Type a word and then change the font. The RichTextEditor is not focused. When you click in it the font is restored.

class MyRichtTextEditorRibbonbar : RichTextEditorRibbonBar
    public MyRichtTextEditorRibbonbar()
        this.dropDownListFont.PopupClosed += DropDownListFont_PopupClosed;

    private void DropDownListFont_PopupClosed(object sender, RadPopupClosedEventArgs args)



Last Updated: 01 Jul 2019 07:38 by ADMIN
The dialog should match the strings contained in the different document parts (headers, footers, footnotes, endnotes, comments).
Last Updated: 01 Jul 2019 15:00 by ADMIN
Release R3 2019 (LIB 2019.2.708)
Created by: Tomasz
Comments: 6
Category: RichTextEditor
Type: Bug Report

1. Document created via MS-Word, Page orientation is set to Landscape. (MS-Word works OK)

2. Document read into Telerik RichTextEditor and print ignore Landscape settings.

3. Documet "Landscape.rtf" and snapshot in attachmet 

please help me 

Last Updated: 12 Jun 2019 13:58 by ADMIN

Please refer to the attached gif file.

Let's take for instance demo application with its default document, with text "RadRichTextEditor for WinForms" at the beginning in font Calibri of size 28. Suppose the user wants to add A, then empty line, then C in single line, followed by the rest of the document, and to have these three new lines in Times New Roman in size 10.

If there is no empty line, but letter B in middle line, then user can set caret to document start, set the font and size, and type A<Return>B<Return>C<Return>. And it would look fine (and even then, if we set caret just after B and press Return the new paragraph will have spacing after set to 7.5 for no apparent reason).

If we want an empty line instead of B in the line, then there is no simple way to do it. Typing A<Return><Return>C<Return> would produce a huge gap between A and C (we still first set the caret, and font and size). One way to accomplish what we want is to select all new text, set font size to something other than 10, and then back to 10 (which is also weird to have to do).

Last Updated: 31 May 2019 10:26 by ADMIN
Release R2 2019 SP1 (LIB 2019.2.603)
Created by: Mihajlo
Comments: 4
Category: RichTextEditor
Type: Bug Report

In R2 2019 RichTextEditor has a new GUI element, a toggle button named Simplified Ribbon. It looks neat, and I like it, but now I have to localize it. There is a link to a strings file on page , but I can't find the text "simplified ribbon" in that xml file.

My fallback plan is to download the whole Telerik source code, I'm just reminding you here to update the file. And to ask you to update the file together with Telerik update in the future.

Last Updated: 27 May 2019 10:37 by ADMIN
Release Fixed in R2 2019 (2019.2.527)
Last Updated: 06 Feb 2019 14:06 by ADMIN

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.

Last Updated: 14 Feb 2019 12:37 by ADMIN
If we open paragraph properties dialog and then Tabstops properties dialog, and then close the second one the first one will also close automatically.
Last Updated: 14 Feb 2019 16:13 by ADMIN
Created by: Mihajlo
Comments: 2
Category: RichTextEditor
Type: Bug Report

I added this line just before Application.Run(new MainForm()); in Word-inspired project:

RichTextBoxLocalizationProvider.CurrentProvider = RichTextBoxLocalizationProvider.FromFile(@"AllCapsRichTextBoxStrings.xml");


I took RichTextBoxStrings.xml from localization page of RichTextEditor. In the xml file I converted all the text between <value> tags to uppercase, and also replaced "OK" (value of "Confirm" data element) with "AYE". I expected all the OK's in all the forms within rich text editor to be replaced, but they all remained as "Ok" (note the lower case "k" here). Well, all except Page Layout > Columns form, which did display AYE, and also References > Insert citation. So, here are the issues that I found:

  • XML file in localizaiton page of RichTextEditor is missing entries for resources "Ok", "Insert", and "Apply".
  • "Ok" resource is used in most places, but "Confirm" resource (with value "OK") is used in AddNewBibliographicSourceDialog.cs and SectionColumns\SectionColumnsDialog.cs. This seems inconsistent.
  • Paper sizes are not localizable, which is actually fine by me for all but the last paper size, "Size14x10", but then what is the purpose of all RibbonUI_PaperSizeXxx resources in resource file?
  • Value of resource "Documents_InsertHyperlinkDialog_SelectionInDocument" is weird. Not sure this resource should even exist, as I could not make it appear in the InsertHyperlinkDialog. Looks like a dummy placeholder.
  • Fallback mechanism for missing resources is weird. If resource is missing the resource name is returned as resource value, which is the reason why Ok, Insert, and Apply are actually shown. Maybe this is intentional, if resource is missing it will be obvious (for unusual resource names). Alternative would be not to change the string at all, as it is already set to default english in .Designer.cs file anyway. So instead of "this.someTextBox.Text = LocalizationManager.GetString("Some_Resource");" it would be something like "this.someTextBox.Text = LocalizationManager.GetString("Some_Resource", this.someTextBox.Text);".

To create AllCapsRichTextBoxStrings.xml, make a copy of provided resource file, open it in Notepad++ and replace all <value>([^<]*)</value> with <value>\U\1\E</value> using regular expressions, and then replace all &AMP;, &LT; and &GT; with &amp;, &lt; and &gt;.

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