Set caret at an index in RichTextBox WPF

Question

I am trying to set the position of caret in richtextbox based on index position of a word. Even though I am able to change the caret position, the caret does not move to the correct location. Here is my sample code: private void Button_Click(object sender, RoutedEventArgs e) { RTB_Main.Document.Blocks.Clear(); for (int i = 0; i < 10; i++) { Paragraph para = new Paragraph(new Run(i + "")); RTB_Main.Document.Blocks.Add(para); } TextRange richText = new TextRange(RTB_Main.Document.ContentStart, RTB_Main.Document.ContentEnd); string searchText = tb_Search.Text; // 1 to 9 int position = Regex.Match(richText.Text, searchText).Index; RTB_Main.CaretPosition = RTB_Main.Document.ContentStart; RTB_Main.CaretPosition = RTB_Main.CaretPosition.GetPositionAtOffset(position); RTB_Main.Focus(); } What is wrong with this approach? Also, Please let me know if there is a better way to set the caret position to an index? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

The problem in my case was caused by new line characters \r\n. I just replaced these with another characters and it worked for me. Note that I am replacing them with not 2 characters but 4. private void Button_Click(object sender, RoutedEventArgs e) { RTB_Main.Document.Blocks.Clear(); for (int i = 0; i < 10; i++) { Paragraph para = new Paragraph(new Run(i + "")); RTB_Main.Document.Blocks.Add(para); } TextRange richText = new TextRange(RTB_Main.Document.ContentStart, RTB_Main.Document.ContentEnd); string searchText = tb_Search.Text; // 1 to 9 string tmpStr = richText.Text.Replace("\r\n", "...."); int position = Regex.Match(tmpStr, searchText).Index; RTB_Main.CaretPosition = RTB_Main.Document.ContentStart; RTB_Main.CaretPosition = RTB_Main.CaretPosition.GetPositionAtOffset(position); RTB_Main.Focus(); }