CODEWITHSUNDEEP
c#
Mathematics
Mathematics

Reputation: 7628

The modifier 'new' is not valid for this item

I created a class GroupPrincipalExtension : GroupPrincipal as you can see it inherits from System.DirectoryServices.AccountManagement.GroupPrincipal

Now when I try to create a constructor in my extension class,

public new GroupPrincipalExtension()
{
    //do something
}

I get this error,

The modifier 'new' is not valid for this item

Based on what I read, we can add own constructors to derived class with or without 'new' keyword

Edit

If i remove new keyword:

'System.DirectoryServices.AccountManagement.GroupPrincipal' does not contain a constructor that takes 0 arguments

Upvotes: 2

Views: 1368

Answers (2)

Yuval Itzchakov
Yuval Itzchakov

Reputation: 149598

GroupPrincipal doesn't have a default constructor. It's slimiest constructor is one which takes a PrincipalContext, which is exactly what you need to take as an argument in your constructor:

public GroupPrincipalExtension(PrincipalContext context) : base(context)
{
    //do something
}

Upvotes: 3

Bauss
Bauss

Reputation: 2797

Remove new from the constructor and it should work. You only declare the new keyword when you're creating an instance.

Also since it inherits from another class you might want to declare it like this:

public GroupPrincipalExtension()
    : base() // Parameters ??
{
    //do something
}

Upvotes: 3

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