Why do “Not all code paths return a value” with a switch statement and an enum?

Question

I have the following code:

public int Method(MyEnum myEnum)
{
    switch (myEnum)
    {
        case MyEnum.Value1: return 1;
        case MyEnum.Val         


        

Answer 1

MyEnum blah = 0;

Default is always 0 and is implicitly convertible, even if you do not have one with a 0 value.