richtextbox

What is the best way to detect if a WPF RichTextBox/FlowDocument is empty? The following works if only text is present in the document. Not if it contains UIElement's new TextRange(Document.ContentStart, Document.ContentEnd).IsEmpty You could compare the pointers, which is not all too reliable: var start = rtb.Document.ContentStart; var end = rtb.Document.ContentEnd; int difference = start.GetOffsetToPosition(end); This evaluates to 2 if the RTB is loaded, and 4 if content has been entered and removed again. If the RTB is completely cleared out e.g. via select all -> delete the value will be 0

I know there are loads of "how to bolden text" questions on here, but none of the answers are helping, I think it may be that the Rich Text Box is being created at runtime. I'm making a chat client, so I have a rich text box split up in lines and the messages are as follows: {Name}: {Message} \r\n I want to bolden the name, I have tried many code examples, but this is the closest I've got to it working: int length = textBox.Text.Length; textBox.Text += roomChatMessage.from + ": " + roomChatMessage.text + "\r\n"; textBox.Select(length, roomChatMessage.from.Length); textBox.SelectionFont = new

I'm currently working on a SilverLight text editor for my site control panel, I almost done with that, but now I need to convert XAML to Html and vice versa (as you probably know Silverlight's RichTextBox returns XAML ) So I've to convert it to Html. Any idea how can I handle this ? Well, it's just XML. So convert Section and Paragraph elements to their appropriate HTML equivalents ( p and div , probably) and do so for the inlines as well ( Run expands to just the text, probably, Span gets span , LineBreak gets br , etc.). I.e. what you need to do is read the XAML as XML and create another

If a line of text is wrapped to an additional line, how do I determine programmatically the point in the string where it was broken. Example: Input string = "This is a test of a wrapped line of text". Based on the width of the richTextBox it could display: This is a test of a wrapped line of text. What I need to determine is offset in the line of the word(s) that got wrapped. In the above case the word "text". When I extract the Xaml from the richTextBox, I get the original text unwrapped. Thanks, Bob Kerlinger The trick I found uses the TextPointer class and its GetCharacterRec method.

This is my first day to design UI using WPF. I have looked up MSDN official document of Flow Document and found that I can place an UI control inside a RichTextBox . I did put a button in but found it's not interactable - I cannot click on it as it's grey. And I also tried other controls and they all displayed fine but just don't support interaction. Even a hyperlink doesn't work. I have searched over internet, the closest question ever asked is about how to make an inside hyperlink click-able: The similar question: C# WPF Text with links I did the same thing but it didn't work! All component