public void GetInfo_WallFoundation(WallFoundation wallFoundation)
{
    string message = "Wall Foundation : ";
    // Get Footing type name
    Document doc = wallFoundation.Document;
    message += "\nFoundation type name is : " + doc.GetElement(wallFoundation.GetTypeId()).Name;

    TaskDialog.Show("Revit",message);
}

Public Sub GetInfo_WallFoundation(wallFoundation As WallFoundation)
   Dim message As String = "Wall Foundation : "
   ' Get Footing type name
   Dim doc As Document = wallFoundation.Document
   message += vbLf & "Foundation type name is : " & Convert.ToString(doc.GetElement(wallFoundation.GetTypeId()).Name)

   TaskDialog.Show("Revit", message)
End Sub