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Tip of the Day
Language: VB7
Expertise: Intermediate
Jul 21, 2003



Application Security Testing: An Integral Part of DevOps

IsMemberSupported - Check whether an object supports a member with the specified name

' Check whether an object supports a member with the specified name
' Examples:
'    Debug.WriteLine(IsMemberSupported(Button1, "BackColor"))    ' => True
'    Debug.WriteLine(IsMemberSupported(Button1, "Focus"))        ' => True
'    Debug.WriteLine(IsMemberSupported(Button1, "TextColor"))    ' => False
'    Debug.WriteLine(IsMemberSupported(Button1, "Print"))        ' => False

Function IsMemberSupported(ByVal obj As Object, ByVal memberName As String) As _
    ' get the array of MemberInfo with the specified name - Type.GetMember 
    ' returns an array
    ' because a member could have overloaded versions
    Dim mi() As System.Reflection.MemberInfo = obj.GetType().GetMember _
    ' returns True if the returned array has at least one item
    Return (Not mi Is Nothing AndAlso mi.Length > 0)
End Function
Marco Bellinaso
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