title: How simulate CTRL+V keystrokes (paste) using C#
body: <p>How can we simulate <kbd>CTRL</kbd>+<kbd>V</kbd> keys (paste) using C#?   </p>
  
  <p>I have a textbox that hasn't a id for access, for example <code>textbox1.Text = someValue</code> won't work here.<br>
  I want to fill that textbox (from clipboard) by clicking on it. For some reasons we exactly need simulate <kbd>CTRL</kbd>+<kbd>V</kbd>, mean we cannot use external libraries like <a href="http://inputsimulator.codeplex.com/" rel="noreferrer">inputsimulator</a>.  </p>