> Hi
>
> I'm trying to create a static class for my ActiveDirectory functions...
> things like GetUsernameFromID, etc.
>
> The code works, but every function has to declare its own
> PrincipalContext,
> and what I'd really like it to have that as a static, as follows...
>
> public class ActiveDirectory
>    {
>        static PrincipalContext dC;
>
>        public ActiveDirectory()
>        {
>           dC = new PrincipalContext(ContextType.Domain,
> "thepoint.org.uk.local");
>        }
>     }
>
>    public static string GetCurrentUserFullName(string userSAM)
>    {
>         string currentUserFN = "(unknown)";
>         string currentUserSN = "";
>         UserPrincipal user = UserPrincipal.FindByIdentity(dC, userSAM);
>         currentUserFN = user.GivenName;
>         currentUserSN = user.Surname;
>
>         return currentUserFN + " " + currentUserSN;
>    }
> }
>
> (have removed try/catch blocks for brevity)
>
> However, this throws the following error on the line "UserPrincipal user =
> UserPrincipal.FindByIdentity(dC, userSAM);"
>
> "Exception Details: System.ArgumentNullException: Value cannot be null.
> Parameter name: context"
>
> I assume this related to the dC object not being set, even though it is
> being set by the Contructor!? Any ideas on how to resolve this? I tried
> making the constructor static, but that fails with "access modifiers are
> not
> allowed on static constructors".
>
> Any help is appreciated!
>
> Cheers
>
>
> Dan

> It is not set as the *non static* constructor was never called...
>
> What if you follow the message advice (i.e use a static constructor as you
> wish and just suppress the access modifier on the static constructor ?,
> this is likely because a static constructor is public by design as it has
> to be called automatically).
>
>
> --
> Patrice
>
> "musosdev" <musoswire@community.nospam> a écrit dans le message de groupe
> de discussion : 1009D82F-2CDA-4446-92AF-6D409D638***@microsoft.com...
>> Hi
>>
>> I'm trying to create a static class for my ActiveDirectory functions...
>> things like GetUsernameFromID, etc.
>>
>> The code works, but every function has to declare its own
>> PrincipalContext,
>> and what I'd really like it to have that as a static, as follows...
>>
>> public class ActiveDirectory
>>    {
>>        static PrincipalContext dC;
>>
>>        public ActiveDirectory()
>>        {
>>           dC = new PrincipalContext(ContextType.Domain,
>> "thepoint.org.uk.local");
>>        }
>>     }
>>
>>    public static string GetCurrentUserFullName(string userSAM)
>>    {
>>         string currentUserFN = "(unknown)";
>>         string currentUserSN = "";
>>         UserPrincipal user = UserPrincipal.FindByIdentity(dC, userSAM);
>>         currentUserFN = user.GivenName;
>>         currentUserSN = user.Surname;
>>
>>         return currentUserFN + " " + currentUserSN;
>>    }
>> }
>>
>> (have removed try/catch blocks for brevity)
>>
>> However, this throws the following error on the line "UserPrincipal user
>> =
>> UserPrincipal.FindByIdentity(dC, userSAM);"
>>
>> "Exception Details: System.ArgumentNullException: Value cannot be null.
>> Parameter name: context"
>>
>> I assume this related to the dC object not being set, even though it is
>> being set by the Contructor!? Any ideas on how to resolve this? I tried
>> making the constructor static, but that fails with "access modifiers are
>> not
>> allowed on static constructors".
>>
>> Any help is appreciated!
>>
>> Cheers
>>
>>
>> Dan
>
>

"Patrice" wrote:

> Actually technically it seems static constructors are private. Anyway the
> idea is that as they are called automatically by the CLR, having an explicit
> access modifier doesn't really make sense. This is why you'll have just to
> remove "public" from you static constructor and then it should work as you
> first intended...
>
> --
> Patrice
>
>
> "Patrice" <http://www.chez.com/scribe/> a crit dans le message de groupe de
> discussion : 8238D59C-85E3-46C1-B1D1-52F3592EB***@microsoft.com...
> > It is not set as the *non static* constructor was never called...
> >
> > What if you follow the message advice (i.e use a static constructor as you
> > wish and just suppress the access modifier on the static constructor ?,
> > this is likely because a static constructor is public by design as it has
> > to be called automatically).
> >
> >
> > --
> > Patrice
> >
> > "musosdev" <musoswire@community.nospam> a crit dans le message de groupe
> > de discussion : 1009D82F-2CDA-4446-92AF-6D409D638***@microsoft.com...
> >> Hi
> >>
> >> I'm trying to create a static class for my ActiveDirectory functions...
> >> things like GetUsernameFromID, etc.
> >>
> >> The code works, but every function has to declare its own
> >> PrincipalContext,
> >> and what I'd really like it to have that as a static, as follows...
> >>
> >> public class ActiveDirectory
> >>    {
> >>        static PrincipalContext dC;
> >>
> >>        public ActiveDirectory()
> >>        {
> >>           dC = new PrincipalContext(ContextType.Domain,
> >> "thepoint.org.uk.local");
> >>        }
> >>     }
> >>
> >>    public static string GetCurrentUserFullName(string userSAM)
> >>    {
> >>         string currentUserFN = "(unknown)";
> >>         string currentUserSN = "";
> >>         UserPrincipal user = UserPrincipal.FindByIdentity(dC, userSAM);
> >>         currentUserFN = user.GivenName;
> >>         currentUserSN = user.Surname;
> >>
> >>         return currentUserFN + " " + currentUserSN;
> >>    }
> >> }
> >>
> >> (have removed try/catch blocks for brevity)
> >>
> >> However, this throws the following error on the line "UserPrincipal user
> >> =
> >> UserPrincipal.FindByIdentity(dC, userSAM);"
> >>
> >> "Exception Details: System.ArgumentNullException: Value cannot be null.
> >> Parameter name: context"
> >>
> >> I assume this related to the dC object not being set, even though it is
> >> being set by the Contructor!? Any ideas on how to resolve this? I tried
> >> making the constructor static, but that fails with "access modifiers are
> >> not
> >> allowed on static constructors".
> >>
> >> Any help is appreciated!
> >>
> >> Cheers
> >>
> >>
> >> Dan
> >
> >
>