Paste some text inside RadRichTextEditor. If the text has more rows than the currently visible area you will see that the control does not scroll down to the caret position.
Workaround:
private void RadRichTextBox_CommandExecuted(object sender, CommandExecutedEventArgs e)
{
if (e.Command is PasteCommand)
{
Application.DoEvents();
bool cursorAtDocEnd = this.radRichTextBox.Document.CaretPosition.IsPositionAtDocumentEnd;
if (cursorAtDocEnd)
{
MoveCaretCommand command = new MoveCaretCommand(this.radRichTextBox.RichTextBoxElement);
command.Execute(MoveCaretDirections.Down);
}
}
}
Tab stops with visible tab leader (dot, hyphen, underscore) are not exported to PDF. Steps to reproduce: - Start with empty document - In Paragraph Properties dialog, choose Tabs - In Tab dialog, enter Tab stop position = 2, Leader = underscore, and press Set. Press OK - Add a word, press Tab, add another word - Export the text to PDF Expected: the words are separated with underscores in the exported PDF. Actual: the words are separated with blank space in the exported PDF.
Workaround:
var paragraphsToRemove = this.radRichTextBox.Document.EnumerateChildrenOfType<Paragraph>().Where(p => p.IsInList && p.Inlines.First() is Break);
foreach (var p in paragraphsToRemove)
{
p.ListId = -1;
}
this.radRichTextBox.UpdateEditorLayout();
The parent of an already removed span cannot be found and a NullReferenceException is thrown while performing Undo. Also, multiple asserts are failing in Debug mode. The stack trace is: UnhandledException: Object reference not set to an instance of an object. UnhandledException: at Telerik.Windows.Documents.Layout.LayoutElement.SetParent(LayoutElement newParent) at Telerik.Windows.Documents.Layout.LayoutBox.EnsureParent() at Telerik.Windows.Documents.Layout.LayoutBox.get_Parent() at Telerik.Windows.Documents.Layout.LayoutBox.get_ValidParent() at Telerik.Windows.Documents.WordPositionHandler.GetParentHandler() at Telerik.Windows.Documents.DocumentPosition.GetCurrentSectionBox() at Telerik.Windows.Documents.UI.DocumentPrintLayoutPresenter.GetCurrentPage() at Telerik.Windows.Documents.UI.DocumentPrintLayoutPresenter.MeasureOverride(Size availableSize) at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
I have no idea how to reproduce this, but every so often after a paste operation into a RadRichTextBox, the host thread becomes unresponsive to user input. The message pump is still running but the following unhandled exception gets thrown in a tight infinite loop. The only way to close the window is to right click on the taskbar button.
System.NullReferenceException
Message: Object reference not set to an instance of an object.
Call Stack:
at Telerik.Windows.Documents.Layout.LayoutElement.SetParent(LayoutElement newParent)
at Telerik.Windows.Documents.Layout.LayoutBox.EnsureParent()
at Telerik.Windows.Documents.Layout.LayoutBox.get_Parent()
at Telerik.Windows.Documents.Layout.FormattingSymbolLayoutBox.get_IsEndOfCell()
at Telerik.Windows.Documents.Layout.FormattingSymbolLayoutBox.GetFormattingSymbolVisual()
at Telerik.Windows.Documents.SpanBoxPositionHandler.get_Location()
at Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.GetViewPointFromDocumentPosition(DocumentPosition position)
at Telerik.Windows.Controls.RichTextBoxUI.PasteOptionsPopup.CalculateLocation()
at Telerik.Windows.Controls.RichTextBoxUI.PasteOptionsPopup.OnOwnerLayoutUpdated(Object sender, EventArgs e)
at System.Windows.ContextLayoutManager.fireLayoutUpdateEvent()
at System.Windows.ContextLayoutManager.UpdateLayout()
at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
A reference in DocumentFragment to RadDocument (CopySource property) can cause a memory after copy-paste between RadDocument.
Workaround:
public static bool ReleaseClipboardExReferences(
RadDocument document)
{
dynamic clipboardEx = new DynamicProxyObject(typeof(ClipboardEx));
if (clipboardEx.documentClipboardData?.CopySource is DynamicProxyObject copySource
&& object.ReferenceEquals(copySource.Instance, document))
{
clipboardEx.documentClipboardData = null;
return true;
}
if (clipboardEx.CopiedDocumentFragment?.Fragment?.CopySource is DynamicProxyObject fragmentCopySource
&& object.ReferenceEquals(fragmentCopySource.Instance, document))
{
clipboardEx.CopiedDocumentFragment = null;
return true;
}
return false;
}