About class division

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Hello friends,
I have defined class as below

public class UserDAO
{ 
     public clsUser Validate(string username,string pwd)
	{
        }
         
     public int saveUserDetails(clsUser objUser)
        { 
        }

     public DataSet GetUserDetails()
        {
        }
}

May i know, do I require inheritance in above scenario??
Just trying to know how actually inheritance is implemented

Thanks in advance

Posted 1-Apr-11 2:42am

dhage.prashant01

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CPallini 1-Apr-11 8:52am

That's not a scenario, that's a sketch of code.

Albin Abel 1-Apr-11 8:57am

Yes agreed

dhage.prashant01 1-Apr-11 9:02am

Ok, is this class doing more than one functionality?

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Eduard Keilholz · Answer 1 · 2011-04-01T02:46:00

You don't have to use inheritance in the above scenario, inheritance is used to kind of have a starting point.

For example if you inherit a class from a TextBox object, your class is exactly the same as the TextBox class

C#

public class MyCustomTextbox : System.Windows.Forms.Textbox
{
}

You can use inheritance to add or manipulate functionality to an existing type. In this example you can add or modify functionality to the TextBox control, for example Validation or something.

Have fun,

Eduard

Not Active · Answer 2 · 2011-04-01T02:47:00

Solution 2

Please read these

http://msdn.microsoft.com/en-us/library/ms173149(v=vs.80).aspx[^]
http://www.csharp-station.com/Tutorials/lesson08.aspx[^]

Posted 1-Apr-11 2:47am

Not Active

Comments

dhage.prashant01 1-Apr-11 8:56am

I know inheritance in books, but i want know how is it implemented in projects.

Albin Abel 1-Apr-11 9:00am

if you feel some of the business logic can be use by many children, then move that to a parent. Or if you feel many children can use your logic then let the children inherit you. There is no hard rule.

[no name] 1-Apr-11 9:09am

It usually starts by implementing what is described in the books

Albin Abel 1-Apr-11 8:58am

Informative links

OriginalGriff · Answer 3 · 2011-04-01T02:49:00

It's not strictly possible to answer that.

The question you have asked is similar to "Do I need petrol to drive to the shops?"
The answer depends on too many unspecified things:
1) Do you have a car or motorcycle?
2) Does it have enough fuel to get to the shops?
3) Does it run on diesel?
4) Is there a petrol station nearby?
5) Are you or the shops on an island with no bridge?

Do you need to inherit from anything? There is nothing in your class as shown which needs to inherit, but with just a tiny fragment nothing can be reliably said.

About class division

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