DataSource Controls :: Why Should Use A Data Access Layer (DAL)

May 10, 2010

I'm now reading this article:[URL]But I don't understnad why this is better than just writing code, methods that connects to DB and get from stored procedore what I need.
Why is it better to use so much DataSets for all the tables and more.

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DataSource Controls :: Deleting Row In Data Access Layer?

Jan 27, 2010

I can use similar code below to select a row in my database when I enter a value (username) in text box and it successfully retrieves.however, I'd also like to delete row from database based on the username i enter in text box. My code runs but no row is deleted...my code is:

SQL:

private AdminTableAdapter adminGetUsers;

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DataSource Controls :: Data Access Layer And UI Seperation?

Apr 13, 2010

I keep all of my code in codeLib.cs and use it on various ASP.NET pages. However, I still have to do the databind(); in the code behind page for each aspx file. How can I eliminate all code in the aspx file so I just have the UI in the aspxand the code and databind(); in codeLib.cs.

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DataSource Controls :: Encapsulate A Data Access Layer With WCF Or WCF Data Services?

Jul 12, 2010

Are there scenarios where it makes sense to encapsulate a data access layer (of a ASP.NET webapplication) with WCF or WCF Data Services ? Makes it sense to use a service inside the application ?

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Architecture :: Data Access Layer And Business Logic Layer?

Jun 24, 2010

I am building a web site following the tutorials on asp.net. I am using dataset as data access lay, and writing classes to access the dataset. But the example is just basic ideas, how do I retrieve individual table column value in the business layer?For example, if I have a table called Product, I only want to find out what is the product name by product id. I did this in my ProductBLL:

public ProductBLL
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[code]...

Is there a better way, or am I doing this correctly? Can anybody give me a reference to a more complicated business logic model?

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Architecture :: How To Pass The Data Between Data Access Layer And Business Acces Layer

Jun 3, 2010

here i have in 3-tier architecture , how to pass the data between DAL and BAL. i am using grid view to edit the data,when ever i click on the edit button all the corresponding fields should come to textboxes. i tried for delete ,it works fine bt not working to EDIT.

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DataSource Controls :: Access Layer - Northwind Tutorial - Unable To Find The NorthwindTableAdapters.ProductsTableAdapter Class

Mar 31, 2010

I've been attempting to walk through the "Creating a Data Access Layer" tutorial found [URL] I create the DB connection, create the typed dataset and table adapter, specify the sql, etc. When I add the code to the presentation layer (in this case a page called AllProducts.aspx) I am unable to find the NorthwindTableAdapters.ProductsTableAdapter class. I tried to import the NorthwindTableAdapters namespace, but it is not showing up. Looking in the solution explorer Class View confirms that there is a Northwind class, but not the namespace I'm l ooking for. I've tried several online tutorials that all have essentially the same steps, and I'm getting the same results.

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Architecture :: Using Data Sources Vs. Using Data Access Layer To Populate Presentation Controls?

Mar 17, 2010

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Forms Data Controls :: How To Pass DDL Selected Value To Data Access Layer

Mar 24, 2010

I'm having a difficult challenge of passing a DropDownList Selected Value to a Data Layer having a Function containing 'cmd.Parameters.AddWithValue("@CourseDDLid", CoursesDDL.SelectedValue.ToString)'. Visual Studio is indicating I need to declare 'CoursesDDL'. I tried accessing the 'Find Control' method but it did not work. Below are the codes for your review.

[Code]....

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Feb 3, 2010

Iam facing the problem with creating the Data Access layer using Dataset.xsd file and How to access the data from the file.

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ADO.NET :: Building Data Access Layer In 3.5

Aug 25, 2010

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Can Get The Data Access Layer .cs File

Feb 2, 2010

I want to get the .cs class file that we use when we work with the data base. and then I can just include it in all the files.

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ADO.NET :: Connectionstring In Data Access Layer?

Nov 1, 2010

I am developing a web application in Visualt Studio 2008. I have a data access layer that is automatically generated using Visual Studio. After publising my site to IIS and tested it for several hours, two exceptions occured:

[Code]....

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.net - Data Access Layer As A Web Service?

Aug 18, 2010

I have been researching for a while and have actually created a prototype ASP.NET web service as a DAL for a few ASP.NET 2.0 web sites. Just would like to ask for some insight/advice from more experienced developers out there who had successfully rolled out DAL as a web service. What are the drawbacks/risks to deploying DAL as a web service? What is the best way to secure or authenticate consumption of this web service? WCF is out of the question, I'll be coding in VS 2005.

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DataSource Controls :: When Add A Object Datasource To Page, It Bring Only Common Layer Classes?

Mar 10, 2011

i have problem white Object datasource. i have a multi-tier Application that include common layer ,DAL Layer,business logic and persantation layerwhen i add a object datasource to my page, it bring me only common layer classes . but i want use bisuiness layer classes what do i do ?

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Data Access Layer With Enterprise Library?

Jun 14, 2010

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C# - Developing A Data Access Layer Using ADO.Net And LINQ?

Sep 21, 2010

I have a potential project where I would be working on developing the "Data Access Layer" of a reporting application using ADO.Net and LINQToSQL.

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ADO.NET :: Retrieving An Image From SQL Into Data Access Layer?

Feb 28, 2011

I'm trying to retrive images from SQL (2005) using ASP.NET 2008

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part of my business object layer is shown below, how can i incorporate the image into this.

I have a DLL file which will take care of displaying the image in the web page once i have retrived it.

[Code]....

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Architecture :: Use STATIC Methods In Data Access Layer?

Feb 4, 2011

I am developing a web application, which has Data Access Layer and this layer has only one class, in which all methods are static methods like static Insert, static Update, static Search. It has no properties. I am using these methods in my Bussiness Logic class for my users who are visiting my website.Now my question is : 1. Is it right to use static methods in this scenario ?2. What will happen if 10 users call Insert method at the same time ?

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SQL Server :: Calling Methods From Data Access Layer?

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I have created a table adapter in DAL. I have created a gridview in the page and want to fill the gridview with a table data by calling a method. My table has 11 columns but i want to display only 2 columns of the table. My getSong() method has a query as Select title, category from Muisc. But it diaplyas all columns with no data except title and category and the autoincrement primary key column with negative values. The pic is given below. How can i solve it?

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I am creating my application in asp.net 3.5. I have to make my Data Access layer, in which I am doing the traditional method of fetching/updating the data. Which is SqlConnection than SQLCommand, than SQLadapter. Will there be any other way I can create my DAL layer easily.

Specification.

My website is small. Approx 7-10 pages. Database has around 80 tables.

What I know:

Linq to SQL - I don't want to use it because I am not fully aware about the LINQ statement and I need to develop the application really fast. [3 days :-( ]. Also, there are 100% chances that the table structure will be altered in future. Enterprise Library: It will take too much time for me to integrate to my application.

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ADO.NET :: Creating A Generic Function - Data Access Layer

Feb 1, 2011

I have written the following functions(1 & 2) in a class file(say abc.vb) to execute a sql statement in code behind.

[Code]....

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ADO.NET :: Handle Errors In Data Access Layer Code?

Feb 28, 2011

I am learning on how to create data access layer code for a web site. I want to ensure I am actually connecting to the datasource, so, I am wanting to use a try/catch block within my data access layer class methods. What I am not sure how to handle is a case where the connectionstate is not open. The method should ideally return a datatable. If an error is thrown would I just return an empty datatable? That is my first thought. My other thought is to return an object and pass a datatable if the connection succeeds or the exception if the connection fails.

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Web Forms :: Auto Generating The Data Access Layer?

Sep 1, 2010

I am working on a small website for project management.There are around 15 database tables. Since i will be using asp.net 2.0, I wont be able to use LINQ.I need to finish the development of the website in a very quick manner.How do i generate the data access layer automatically. I found NHibernate as one solution, but it seems too difficult for such a small project.

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Build A Data Access Layer For New Web Based Application?

May 17, 2010

I was looking to build a Data Access Layer for my new web based application, I'm using ASP.NET. I'm want to build a framework not only for this application but also want to utilize it for my future projects.

Actually my main aim is to make a framework, from DAC, DAL, BL to GUI. I want suggestions from you guys that what should i adopt, what give me flexibility, which suits for both small and large size applications.

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