Clipboard.Clear Method ()
.NET Framework 4.6 and 4.5
Removes all data from the Clipboard.
System.Windows.Forms (in System.Windows.Forms.dll)
The Clipboard could not be cleared. This typically occurs when the Clipboard is being used by another process.
The current thread is not in single-threaded apartment (STA) mode. Add the STAThreadAttribute to your application's Main method.
Because the Clipboard is shared by multiple processes, calling this method may have an impact on those processes.
The Clipboard class can only be used in threads set to single thread apartment (STA) mode. To use this class, ensure that your Main method is marked with the STAThreadAttribute attribute.
The following example demonstrates this member.
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Available since 2.0