Why type parameter cannot used to call static method

[Andrus]

I tried to use type parameter to call static method but got compile error
'T' is a 'type parameter', which is not valid in the given context.

Why this is not allowed ?
Should I really use a lot longer ModelGenericBas e<T>.test1() ?

Andrus.



class VirtualGrid<T>
where T : ModelGenericBas e<T{

void test() {
//'T' is a 'type parameter', which is not valid in the given context
T.test1();
}
}

class ModelGenericBas e<T{
public static void test1() {
}
}

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

Re: Why type parameter cannot used to call static method

Andrus wrote:

I tried to use type parameter to call static method but got compile error
'T' is a 'type parameter', which is not valid in the given context.
>
Why this is not allowed ?
Should I really use a lot longer ModelGenericBas e<T>.test1() ?
>
Andrus.
>
>
>
class VirtualGrid<T>
where T : ModelGenericBas e<T{
>
void test() {
//'T' is a 'type parameter', which is not valid in the given context
T.test1();
}
}
>
class ModelGenericBas e<T{
public static void test1() {
}
}
>

You can't use the type parameter to call a static method, as there is no
way of specifying in the class header that the type has to have that method.

--
Göran Andersson
_____

http://www.guffa.com

[Christof Nordiek]

Re: Why type parameter cannot used to call static method

Hi Andrus,

"Andrus" <kobruleht2@hot .eeschrieb im Newsbeitrag
news:ur$qDtSCIH A.464@TK2MSFTNG P02.phx.gbl...

>I tried to use type parameter to call static method but got compile error
'T' is a 'type parameter', which is not valid in the given context.
>
Why this is not allowed ?
Should I really use a lot longer ModelGenericBas e<T>.test1() ?

Yes, indeed. Why don't you want to do that?
Only readability?
C# doesn't support polymorphism of static members, so there would not be a
semantical difference.

For readability you could use a using alias directive.

Christof

<snip>

>
class VirtualGrid<T>
where T : ModelGenericBas e<T{
>
void test() {
//'T' is a 'type parameter', which is not valid in the given context
T.test1();
}
}
>
class ModelGenericBas e<T{
public static void test1() {
}
}

[Andrus]

Re: Why type parameter cannot used to call static method


"Göran Andersson" <guffa@guffa.co mkirjutas sõnumis
news:%23a4z$STC IHA.1208@TK2MSF TNGP05.phx.gbl. ..

Andrus wrote:

>I tried to use type parameter to call static method but got compile error
>'T' is a 'type parameter', which is not valid in the given context.
>>
>Why this is not allowed ?
>Should I really use a lot longer ModelGenericBas e<T>.test1() ?
>>
>Andrus.
>>
>>
>>
>class VirtualGrid<T>
> where T : ModelGenericBas e<T{
>>
> void test() {
> //'T' is a 'type parameter', which is not valid in the given context
> T.test1();
> }
>}
>>
>class ModelGenericBas e<T{
> public static void test1() {
> }
>}

>
You can't use the type parameter to call a static method, as there is no
way of specifying in the class header that the type has to have that
method.

I specified in class header that this type has this method:

where T : ModelGenericBas e<T>

Is this bug ?

Andrus.

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

Re: Why type parameter cannot used to call static method

Andrus wrote:

>You can't use the type parameter to call a static method, as there is no
>way of specifying in the class header that the type has to have that
>method.

>
I specified in class header that this type has this method:
>
where T : ModelGenericBas e<T>
>
Is this bug ?
>
Andrus.
>

You specified that the type has to be of the type ModelGenericBas e<Tor
inherit the type ModelGenericBas e<T>. As static methods are specific to
the type and are not inherited, the type doesn't have to have the static
method if it only inherits ModelGenericBas e<T>.

--
Göran Andersson
_____

http://www.guffa.com