ASP.NET

19-Apr-10 1:25

hello everyone

I would like to know how to link layers (objects, dal and bll) between them, for example, I would add a new record in my table so I created a class that contains the constructors and properties, a class that contains DAL methods of access to data and a class containing functions BLL insertion data in the database .my problem is that I do not know how to tie all these component-level code.
thanks.

Not Active19-Apr-10 2:48

Not Active

19-Apr-10 2:48

Have you tried this[^]?

I know the language. I've read a book. - _Madmatt

Vimalsoft(Pty) Ltd19-Apr-10 3:39

19-Apr-10 3:39

Look at this

Coding an N-Tier Application in C# Without Any Wizard: Part II[^]

Coding an N-Tier Application in C# without any Wizard Part I[^]

Building an N-Tier Application in VB.NET, in 8 Steps[^]

You have to set as Reference of a DAL on a BLL.

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

tek 200919-Apr-10 4:50

19-Apr-10 4:50

Thank you for your answers, but in my project I created 4 layers, DAL, busniss object, BLL and presentation layer, so my problem was that I could aps linked layer busniss object (which contains the methods get and set) with the BLL and DAL , I searched but I don't found the concrete examples

Vimalsoft(Pty) Ltd19-Apr-10 20:23

19-Apr-10 20:23

ok But why do you have two BLL ?

What is the Sequence here please choose one and we will continue and i will tell you what to do

PL-->BLL--->Business objects---->DAL

PL-->Business objects--->BLL---->DAL

tek 200919-Apr-10 23:03

19-Apr-10 23:03

I work with this method

PL-->Business objects--->BLL---->DAL

Vimalsoft(Pty) Ltd19-Apr-10 23:38

19-Apr-10 23:38

Ok now Remove all the references to the Projects.

let us start from the Back the DAL.

DAL The DAL must not reference any Project, if you have a reference to any project then remove it

BLL Add a Reference of DAL in the this Project(Only the Reference to DAL must exists)

Business objects Add the Reference to BLL(Only the Reference to BLL must Exists)

PL Add a Reference to the Business objects(Only the Reference to the Business objects must exist)

Note: if you want to add a Reference Right Click the Individual not a Solution but a Class Library and select the "Add References" option and a dialogbox will appear, Click on the "Project Tab" and select the appropriate project.

Hope you understand this

tek 200919-Apr-10 23:52

19-Apr-10 23:52

yes I understand Smile | :)

, and thank you for your help Vuyiswa Maseko

Vimalsoft(Pty) Ltd19-Apr-10 23:58

19-Apr-10 23:58

You welcome Smile | :)

tek 200920-Apr-10 0:24

20-Apr-10 0:24

I'm going to bother you again Vuyiswa Maseko, I would take your advice on my way to work, so I'll create a function to insert data into the dbb without using the property of class (get, set),and in the bll level I appeal to dal and business object class ,and in level presentation I'll call bll .

is correct????

Vimalsoft(Pty) Ltd20-Apr-10 1:06

20-Apr-10 1:06

Yes that is Correct

tek 200920-Apr-10 1:23

20-Apr-10 1:23

but my problem is how to call the properties of the class busniss object (get, set) in reference bll without make a reference ???

Vimalsoft(Pty) Ltd20-Apr-10 1:32

20-Apr-10 1:32

if i remember correctly you have chosen this approach

PL-->Business objects--->BLL---->DAL

You want to access the Properties of the Business objects in a BLL. This is not Good. The Tiers were made to encapsulate the what is happening in other Tiers. But now if you want the BLL to access the Business objects layer then its no longer called an N-Tier architecture. the logic here is to make sure the DAL has no knowledge that there is BLL and BLL has no knowledge that there is Business objects and Business objects has no Knowledge of the PL not the way around. That is why in the DAL you must make all functions that needs to be accessed in the BLL as public and same in the BLL you must make all functions that needs to be access in the Business objects and same to the Business objects you must make the functions public that needs to be accessed in the PL.

tek 200920-Apr-10 1:52

20-Apr-10 1:52

yes you are right, but if I create a class object that contains property (get and set) to have access to property through this class, if I was wrong, so why create a class object containing the property get , set ?????

Vimalsoft(Pty) Ltd20-Apr-10 5:09

20-Apr-10 5:09

Maybe i misunderstood you

You want to access properties of a Class , that have been declare Public in the Class?

tek 200920-Apr-10 5:37

20-Apr-10 5:37

Yes I want to access to Properties declared public in class busniss object in the class bll

Vimalsoft(Pty) Ltd20-Apr-10 10:06