<System.Runtime.CompilerServices.Extension()> _
Public Function GetString(ByVal arg As RectangleF, _
                 Optional ByVal format As String = "", _
                 Optional ByVal separator As Char = ";"c) As String
 
   Dim ret As String
 
   ret = "{X=" & arg.X.ToString(format) & separator & " "
   ret &= "Y=" & arg.Y.ToString(format) & separator & " "
   ret &= "Width=" & arg.Width.ToString(format) & separator & " "
   ret &= "Height=" & arg.Height.ToString(format) & "}"
 
   Return ret
 
End Function