C＃复制到剪贴板在运行时不起作用

Question

I'm working on a web application using asp.net and c# in the code behind. I just want to copy a text in a textbox to clipboard, my code is as follow:

The problem is that this is working properly in debug mode, but when deploying my website, in running mode the CopyToClipboard is not working!

Thread newThread = new Thread(new ThreadStart(CopyToClipboard));
newThread.SetApartmentState(ApartmentState.STA);
newThread.Start();

private void CopyToClipboard()
{
    Clipboard.Clear();
    Clipboard.SetData("Text", txtEmailId.Text);
    Clipboard.SetText(txtEmailId.Text);
}

Answer 1

That Clipboard class resides in System.Windows.Forms. You cannot use this in ASP.net, because it will only attempt to modify the clipboard state of the server the ASP.net process runs on. And that's probably not what you're looking for.

To modify the clipboard from a website, you need to look at unreliable Javascript solutions. Please note that the clipboard is potentially unsafe and possible can't be accessed at all. Also see How do I copy to the clipboard in JavaScript?