Better Know A Framework: System.Enum.HasFlag()

Ok, so first ‘Better Know A Framework’. This one is for the new .NET 4.0 method HasFlag on System.Enum

I chose this one because a while back in my blog I posted an Enum helper that had a method like this. The method just replaces the:

bool isFlagSet = (value & flag == flag);


bool isFlagSet = value.HasFlag(flag);

Another helpful little thing is that the flag value you pass in can also be a combination of flag values. Its simple but helpful. However on my helper, I also put the SetFlag method. Maybe Microsoft are working that one up for .NET 5

So that’s it for the first of these, there is the new method, give it a whirl

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