How can I cast int to enum?

Question

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

Answer 1

You just do like below:

int intToCast = 1;
TargetEnum f = (TargetEnum) intToCast ;

To make sure that you only cast the right values ​​and that you can throw an exception otherwise:

int intToCast = 1;
if (Enum.IsDefined(typeof(TargetEnum), intToCast ))
{
    TargetEnum target = (TargetEnum)intToCast ;
}
else
{
   // Throw your exception.
}

Note that using IsDefined is costly and even more than just casting, so it depends on your implementation to decide to use it or not.