private void Script_textbox_KeyUp(object sender, KeyEventArgs e) { script = ScriptTextBox.Text; int linecount = ScriptTextBox.GetLastVisibleLineIndex() + 1; if (linecount != maxLC) { LineNumberTextBox.Clear(); for (int i = 1; i < linecount + 1; i++) { LineNumberTextBox.AppendText(Convert.ToString(i) + "\n"); } maxLC = linecount; } SaveStatus.Content = "Changed"; }