You can make select case to determine if the obj , for example , is jpg ,bmp ..etc depending on the format of the picture .

Code:
Dim A As Windows.Forms.IDataObject, S() As Object, S2 As Object
        A = Clipboard.GetDataObject()
        S = A.GetFormats()
        S2 = A.GetData(S(0))
        MessageBox.Show("Object in Clipboard is :" + S2.GetType.ToString)