Sub-Classing problem

[vnb]

when i Build the following sub-class of Socket i get the following error
message

No overload for method 'Socket' takes 0 arguments

can someone tell me how to overcome this problem


using System;
using System.Net.Sockets;

namespace NetClient
{
public class ConnectionSocket : Socket
{
public ConnectionSocket(AddressFamily af, SocketType st, ProtocolType pt)
{
}
}
}

 

[Nicholas Paldino [.NET/C# MVP]]

vnb,

When you subclass another class, if you do not explictly call the base
constructor when calling your constructor, a call is implied to the
constructor on the base class which takes zero arguments. However, because
the Socket only has one constructor that takes three arguments, this isn't
possible. So, what you need to do is this:

public class ConnectionSocket : Socket
{
public ConnectionSocket(AddressFamily af, SocketType st, ProtocolType
pt) :
base(af, st, pt)
{
}
}

This causes the base constructor to be called correctly.

Hope this helps.

 

[Jon Skeet [C# MVP]]

when i Build the following sub-class of Socket i get the following error
message

No overload for method 'Socket' takes 0 arguments

can someone tell me how to overcome this problem

Yes - you need to specify a base constructor to call from your
constructor.

See http://www.pobox.com/~skeet/csharp/constructors.html

 

[AlexS]

Hi, vnb

By default compiler tries to use default base constructor - in this case
base(), and this causes problem.
You have to specify:

public ConnectionSocket(AddressFamily af, SocketType st, ProtocolType

pt)
: base(af,st,pt)

{

HTH
Alex