at (wrapper managed-to-native) System.Windows.Forms.XplatUIWin32.Win32SetClipboardData (uint,intptr) <0x00004>
  at (wrapper managed-to-native) System.Windows.Forms.XplatUIWin32.Win32SetClipboardData (uint,intptr) <0xffffffff>
  at System.Windows.Forms.XplatUIWin32.ClipboardStore (intptr,object,int,System.Windows.Forms.XplatUI/ObjectToClipboard) <0x001ea>
  at System.Windows.Forms.XplatUI.ClipboardStore (intptr,object,int,System.Windows.Forms.XplatUI/ObjectToClipboard) <0x0001e>
  at System.Windows.Forms.Clipboard.SetDataObject (object,bool) <0x00299>
  at System.Windows.Forms.Clipboard.SetDataObject (object) <0x0000c>
  at System.Windows.Forms.TextBoxBase.Copy () <0x00171>
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.TextBoxBase.Copy() <0xffffffff>
  at Program.Main () <0x00049>
  at (wrapper runtime-invoke) System.Object.runtime_invoke_void (object,intptr,intptr,intptr) <0xffffffff>