用C#实现的模拟打字程序，首先给出一段文字，在试用者在另一个文本框中打字时，开始计时，并禁用“剪贴板”技术，防止试用者偷懒。-Simulation by typing C# implementation process, we first give a text, the text in the box, try typing in the other, the start time, and disable the " clipboard" technology to pre