Cast int to enum in C#


Question

How can an int be cast to an enum in C#?

1
2927
10/29/2014 5:57:52 PM

Accepted Answer

From a string:

YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);
// the foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags] attribute
if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(","))
  throw new InvalidOperationException($"{yourString} is not an underlying value of the YourEnum enumeration.")

From an int:

YourEnum foo = (YourEnum)yourInt;

Update:

From number you can also

YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum) , yourInt);
3510
1/5/2017 8:56:25 AM

Just cast it:

MyEnum e = (MyEnum)3;

You can check if it's in range using Enum.IsDefined:

if (Enum.IsDefined(typeof(MyEnum), 3)) { ... }

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