How to create extension to shared method

Question

I like to create an extension method to Image.FromStream

Public Shared Function FromStream(ByVal stream As System.IO.Stream) As System.Drawing.Image

With possibility to cancel processing like

Public Shared Function FromStream(ByVal stream As System.IO.Stream, ByVal CloseTask As ManualResetEvent) As System.Drawing.Image

Is it possible?

Answer 1

No, you can only add extension methods which appear to add instance methods to a type - you can't make it look like you've added new shared methods to a type.

Answer 2

I have a somewhat dodgy way I do shared extensions.

I use the Extensions class to resolve the conflict in having the same signature for my functions

Module Main
    Public Class Extensions
        Public Class [Boolean]
            Public Shared Function TryParse(ByVal strValue As String, ByRef blnResult As Boolean) As Boolean
                If Not Object.Equals(strValue, Nothing) Then
                    If strValue = "Y" Then
                        blnResult = True
                        Return True
                    End If

                    If strValue = "N" Then
                        blnResult = False
                        Return True
                    End If
                End If

                Return Boolean.TryParse(strValue, blnResult)
            End Function
        End Class
    End Class

End Module