title: RichTextbox write in place to current line
body: <p>Clarification: I want to output line of text to the same &quot;position&quot; in a RichTextBox, replacing the previous line.</p>
  <p>In C# Windows Forms Application trying to use RichTextBox for displaying messages. Most of the messages are appended, so that is fine but at one point in the program it has a counter, showing the amount of rows processed. For example like this:</p>
  <blockquote>
  <p>Processed: 001 Records.</p>
  </blockquote>
  <p>etc</p>
  <p>well ... I don't need it to fill the RichTextBox with a thousands of lines like this:</p>
  <blockquote>
  <p>Processed: 001 Records.</p>
  <p>Processed: 002 Recoeds.</p>
  </blockquote>
  <p>Instead I am trying to move the Caret to a start of the line and write the line again. Probably need to remove the previous line in a RichTextBox. Can't figure out <strong>how to always write to the same last line in RichTextBox</strong>.</p>
  <p>I tried to use SelectionStart and ScrollToCaret() that did not work.</p>