How can I cast int to enum?

From an int:
YourEnum foo = (YourEnum)yourInt;

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.”)
}

Update:
From number you can also
YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum) , yourInt);

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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