Silly me , I assumed you meant the System.Windows.Forms.SaveFileDialog()
Not silly at all but that is the truth
I confused between the two SvaeFileDialog methods, Windows and AutoCAD. sorry for that.
I added the full path of the NameSpace System.Windows.Forms.SaveFileDialog svd ..... and that 's what I was after.
Many thanks Kerry for your prompt help.
And thanks for the links , they look great and very informative.