Visual Basic .NET Language Enum Determine whether a Enum has FlagsAttribute specified or not
Example
The next example can be used to determine whether a enumeration has the FlagsAttribute specified. The methodology used is based on Reflection.
This example will give a True result:
Dim enu As [Enum] = New FileAttributes()
Dim hasFlags As Boolean = enu.GetType().GetCustomAttributes(GetType(FlagsAttribute), inherit:=False).Any()
Console.WriteLine("{0} Enum has FlagsAttribute?: {1}", enu.GetType().Name, hasFlags)
This example will give a False result:
Dim enu As [Enum] = New ConsoleColor()
Dim hasFlags As Boolean = enu.GetType().GetCustomAttributes(GetType(FlagsAttribute), inherit:=False).Any()
Console.WriteLine("{0} Enum has FlagsAttribute?: {1}", enu.GetType().Name, hasFlags)
We can design a generic usage extension method like this one:
<DebuggerStepThrough>
<Extension>
<EditorBrowsable(EditorBrowsableState.Always)>
Public Function HasFlagsAttribute(ByVal sender As [Enum]) As Boolean
Return sender.GetType().GetCustomAttributes(GetType(FlagsAttribute), inherit:=False).Any()
End Function
Usage Example:
Dim result As Boolean = (New FileAttributes).HasFlagsAttribute()
