private void ScriptTextBox_SelectionChanged(object sender, EventArgs e) { int selectionStart = ScriptTextBox.SelectionStart; int index = ScriptTextBox.GetFirstCharIndexOfCurrentLine(); int row = ScriptTextBox.GetLineFromCharIndex(selectionStart) + 1; int column = selectionStart - index + 1; Console.WriteLine(row.ToString() + "," + column.ToString()); }