Sure, so what you can do is use the SelectionStart, SelectionLength and SelectionColor properties to accomplish this. It works quite well. Check out this page for info on these properties. You can know the length of the RichTextBox text and color this as you go by setting the SelectionStart property to the current length, get … Read more
Scintilla.NET is probably what you’re looking for
Given the requirements: 1) A User inserts some text in a RichTextBox Control. 2) If the word entered is part of a pre-defined list of words, that word should change color (so, define a relation between a word and a color). 3) When a mouse Click event is generated on a colored word, an event … Read more
It’s not possible to achieve the required level of control over presentation in a regular textarea. If you’re OK with that, try CodeMirror or Ace or Monaco (used in MS VSCode). From the duplicate thread – an obligatory wikipedia link: Comparison of JavaScript-based source code editors
First kudos to ArtyomZzz for pointing to the great source of DiffMatchPatch! Here is a piece of code the will paint the changed characters in two RichTextboxes upon a button click. First download the diff-match-patchsource. (!See update below!) From the zip file copy ‘DiffMatchPatch.cs’ and also ‘COPY’ to your project and inlude the cs file … Read more
The most straightforward way would be to modify the RTF code to insert the picture yourself. In RTF, a picture is defined like this: ‘{‘ \pict (brdr? & shading? & picttype & pictsize & metafileinfo?) data ‘}’ A question mark indicates the control word is optional. “data” is simply the content of the file in … Read more
to set RichTextBox text: richTextBox1.Document.Blocks.Clear(); richTextBox1.Document.Blocks.Add(new Paragraph(new Run(“Text”))); to get RichTextBox text: string richText = new TextRange(richTextBox1.Document.ContentStart, richTextBox1.Document.ContentEnd).Text;
There is a much easier way! You can easily create an attached DocumentXaml (or DocumentRTF) property which will allow you to bind the RichTextBox‘s document. It is used like this, where Autobiography is a string property in your data model: <TextBox Text=”{Binding FirstName}” /> <TextBox Text=”{Binding LastName}” /> <RichTextBox local:RichTextBoxHelper.DocumentXaml=”{Binding Autobiography}” /> Voila! Fully bindable … Read more
It is an oversight in the RichTextBox class. Other controls, like ListBox, support the BeginUpdate and EndUpdate methods to suppress painting. Those methods generate the WM_SETREDRAW message. RTB in fact supports this message, but they forgot to add the methods. Just add them yourself. Project + Add Class, paste the code shown below. Compile and … Read more
Here is an extension method that overloads the AppendText method with a color parameter: public static class RichTextBoxExtensions { public static void AppendText(this RichTextBox box, string text, Color color) { box.SelectionStart = box.TextLength; box.SelectionLength = 0; box.SelectionColor = color; box.AppendText(text); box.SelectionColor = box.ForeColor; } } And this is how you would use it: var userid … Read more