hi gyes. can any help me how to save text with font and color using richtextbox, and open with same font and color in richtextbox. i'm using .RTF file type, but it doesn't work.

Hard to say why it's not working since you don't show the code you're using. However, this richTextBox1.SaveFile("myrtffile.rtf"); should work.

Loading the file could look like this: richTextBox1.Rtf = System.IO.File.ReadAllText("myrtffile.rtf");

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