You need to add the Flags attribute to the top of the enum, and then you can combine enums with the 'Or' keyword. The numbers to the right are always twice as big powers of 2 - this is needed to be able to separate the individual flags that have been set.

They effectively get combined bit math so that the above user has both Read AND Execute all carried around in one fancy SecurityRights variable. To check to see if the user has a privilege you use AND more bitwise math to check the users enum value with the the Enum value you're checking for:. If I understand your question correctly you want to combine different enum types. So one variable can store a value from one of two different enum's right? If you're asking about storing combining two different values of one enum type you can look at Dave Arkell's explanation.

Enums are just integers with some syntactic sugar. So if you make sure there's no overlap you can combine them by casting to int. It won't make for pretty code though.

I try to avoid using enums most of the time. Usually if you let enums breed in your code it's just a matter of time before they give birth to repeated case statements and other messy antipatterns. The key to combination Enum s is to make sure that the value is a power of two 1, 2, 4, 8, etc.

Those Enum s can be be tagged with a Flags attribute. The Anchor property on Windows Forms controls is an example of such a control. If it's marked as a flag, Visual Studio will let you check values instead of selecting a single one in a drop-down in the properties designer. If you taking about using enum flags there is a good article here.

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What does the [Flags] Enum Attribute Mean?

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Bitwise Operations with Enumerations

Stack Overflow is a community of 7. Join them; it only takes a minute: Combining Enums Ask Question. Is there a way to combine Enums in VB. I believe what you want is a flag type enum. Combine the desired flags using the Or keyword: Readonly This sets TitleBar and Readonly into the enum To check what's been set: If settings And CombinationEnums.

Dave Arkell 2, 1 13 If you are using. NET 4, then you can use the. HasFlag method to make the code a little easier to read - If settings. You can use the FlagsAttribute to decorate an Enum like so which will let you combine the Enum: Execute They effectively get combined bit math so that the above user has both Read AND Execute all carried around in one fancy SecurityRights variable.

To check to see if the user has a privilege you use AND more bitwise math to check the users enum value with the the Enum value you're checking for: End If HTH, Tyler. Tyler 2, 1 24 Do name the zero value of flags enumerations None What it says is that you shouldn't use zero to mean some additional state, rather that zero means no state i.

Net does not magically cause the bit patterns "1" and "3" in your example to not collide. I updated the "Write" to a 2 from a 3, typo. If you're asking about storing combining two different values of one enum type you can look at Dave Arkell's explanation Enums are just integers with some syntactic sugar. Toothbrush 1, 11 Hath 8, 5 25 Sign up or log in StackExchange. Sign up using Facebook.

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