How to iterate over values of an enum having Flags?

How to iterate over values of an enum having Flags?

But here’s one way you can get them: I adapted what Enum does internally to generate the string to instead return the flags. You can look at the code in reflector and should be more or less equivalent. Works well for general use cases where there are values which contain multiple bits.

How to parse an enum to a list?

Or if you want a list instead of an array as in the sample in the question you can convert the array into a list: Enum.Parse will handle the concatenated values outputted by ToString just fine. Proof using the Immediate window: ? System.Enum.Parse (typeof (System.AttributeTargets), “Class, Enum”) Class | Enum

Can a flag have a none = 0 value?

First of all, flags must have a None = 0 value, because otherwise there’s no way to represent a 0 mask (i.e. no value ). Once you’ve fixed it, you can check if some enumeration value is in some given flag using Enum.HasFlag or the bit-wise & operator:

How to get values of constants in enumtype?

Retrieves an array of the values of the constants in a specified enumeration type. Retrieves an array of the values of the constants in a specified enumeration. An enumeration type. An array that contains the values of the constants in enumType.

How to enumerate all flags in a myenum?

[Flags] enum MyEnum { //None = 0, can be used but not combined in bitwise operations FlagA = 1, FlagB = 2, FlagC = 4, FlagD = 8 //you must use powers of two or combinations of powers of two //for bitwise operations to work } var twoFlags = MyEnum.FlagA | MyEnum.FlagB; // This will enumerate all the flags in the variable: “FlagA, FlagB”.

How to check the value of an enum variable?

Starting with C# 7.0, binary literals can be used too. To check if the value of enum variable has a certain flag set, the HasFlag method can be used. Let’s say we have Also we can iterate through all values of enum to get all flags that are set Get monthly updates about new articles, cheatsheets, and tricks.

How to declare the enum as a set in C #?

Although flags are often only a single bit, they can be combined into named “sets” for easier use. To avoid spelling out the decimal values of powers of two, the left-shift operator (<<) can also be used to declare the same enum Starting with C# 7.0, binary literals can be used too.

How to determine the enum of a string?

However, you can perform a logical, not a bitwise, comparison between the numeric value and the None enumerated constant to determine whether any bits in the numeric value are set. See also the Guidelines when defining a Flags enum.

Can you use none as the name of a flag enumerated constant?

Use None as the name of the flag enumerated constant whose value is zero. You cannot use the None enumerated constant in a bitwise AND operation to test for a flag because the result is always zero.

Where do you find the flags in Stack Overflow?

Everything is already stored in the flags: And whenever you need to check if a given role has been you don’t need to look in a list, but simply look in the roles enumeration: