Auto-Implemented Properties and Nullable Types

[Stefan Hoffmann]

hi @all,

has anybody an explanation, why string? is not allowed for an
auto-implemented property?

namespace Test
{
class Class1
{
int? NullableInt { get; set; }
string? NullableString { get; set; }
}
}


mfG
--> stefan <--

 

[Stefan Hoffmann]

hi Stefan,

has anybody an explanation, why string? is not allowed for an
auto-implemented property?

Found it:

public struct Nullable<T> where T : struct


arghh
--> stefan <--

 

[Marc Gravell]

Because string is a reference-type (class), not a value-type (struct).

Strings can already be null - just use:

string Foo {get;set;}

Marc