You may have to do this yourself. You can create your own features to a multi line textbox. If you think you may reuse this control, or that it's worth learning about, you can look into creating a custom user control (http://msdn.microsoft.com/en-us/libr...=vs.85%29.aspx). Either way, the solution is the same. You can create a method that is fired from the OnKeyPress event. This method would count the number of characters in the textbox. if the number exceeds 100 (or whatever limit you want) you would append a line break to what is there (vbCrlf). If you have a question about creating the method or event, post back.