Enum from string, int, etc

Question

Using extension method we can create methods to convert an enum to other datatype like string, int by creating extension methods ToInt(), ToString()

Answer 1

why do you want FromInt an extenstion method versus just casting it?

MyEnum fromInt;
if(Enum.IsDefined(typeof(MyEnum), intvalue))
{
    fromInt = (MyEnum) intvalue;
}
else
{
    //not valid
}

alternatively, for strings, you can use Enum.TryParse

MyEnum fromString;
if (Enum.TryParse(stringvalue, out fromString))
{
    //succeeded
}
else
{
    //not valid
}