要指定与SHIFT，CTRL和ALT键的任意组合组合的键，请在键码前面加上一个或多个以下代码。

To specify keys combined with any combination of the SHIFT, CTRL, and ALT keys, precede the key code with one or more of the following codes.

SendKeys.Send("^v");

b $ b ---

SendKeys.Send方法（字符串）（System.Windows.Forms） [ ^ ]