C# Client Server Application on WPF IDE

LAPEC

Hello Everyone I have created a Client/Server application on C# on WPF IDE and I have a little problem on my UserClient property class... Within this class I have a method called:

public override bool Equals(object obj)
{
UserClient temp = obj as UserClient;
if (temp != null)
{
return (userId == temp.userId);
}
if (temp != null)
{
return (userPass == temp.userPass);
}
return false;
}

The problem I'm having is: The class UserClient is highlighted with a green line under-neath where when I place MouseOver it sas: UserClient overrides Object.Equals but does not override Object.GetHashCode Here is the entire UserClient class code:

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;

namespace DtposClient
{
public class UserClient
{
// User Client Global variables
// ====================================
private string UserFullName;
private string UserAccessLevel;
private int UserId;
private int UserPassword;

public string fullName
    {
        get { return UserFullName; }
        set { UserFullName = value; }
}

    public string accLevel
    {
        get { return UserAccessLevel; }
        set { UserAccessLevel = value; }
    }

    public int userId
    {
        get { return UserId; }
        set { UserId = value; }
    }
    
public int userPass 
    {
        get { return UserPassword; }
        set { UserPassword = value; }
    }
    
public override bool Equals(object obj)
{
        UserClient temp = obj as UserClient;
        if (temp != null)
        {
            return (userId == temp.userId);
        }
        if (temp != null)
        {
            return (userPass == temp.userPass);
        }
        return false;
}

    public UserClient(string fullNam, string aLevel, int usId, int pass)
{
        fullName = fullNam;
        accLevel = aLevel;
        userId = usId;
        userPass = pass;
}
}

}

Could someone please help me crack this problem.... thanks in advance kind regards lapeci

RobCroll

lapeci, forum guidelines state "do not post the same question in more than one forum." see answer to question in C# forum.

"You get that on the big jobs."

Pete OHanlon

That's easy. Whenever you override Equals, you are required to override GetHashCode. All you need to do is add an override for this method. The reason you need to do this is because you have changed the way equality works, so without a custom hashcode, you can end up with two different objects with the same hashcode - hence a problem with equality. BTW, you should have posted this in the C# forum as it's a generic C# problem. The fact that the application is WPF is neither here nor there.

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Abhinav S

You can always use the new method to create a method of your own (breaking away from the inheritance hierarchy).

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