TextAlign 属性看起来会满足您的要求。

The TextAlign property looks like it will satisfy your requirement.

txtFolderName.TextAlign = HorizontalAlignment.Right 

试试这个：

Try this:

yourTextBox.SelectionStart = yourTextBox.TextLength;

yourTextBox.SelectionStart = yourTextBox.TextLength

希望这会有所帮助。

Hope this helps.