Another workaround would be to use Clipboard.SetDataObject
instead of Clipboard.SetText
.
According to this MSDN article this method has two parameters – retryTimes and retryDelay – that you can use like this:
System.Windows.Forms.Clipboard.SetDataObject(
"some text", // Text to store in clipboard
false, // Do not keep after our application exits
5, // Retry 5 times
200); // 200 ms delay between retries