Architecture :: How To BLL / Data Access
Jun 13, 2010Im wondering what the best approach for the following would be,
I have two objects, Users and Profile. I am using a 3tier design and i have the following code (shortened)
[Code]....
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Access :: Database Architecture - How to Design The Data Access?
Feb 12, 2010I am starting a new project in ASP.NET (With silverlight) - I would like to get expert opinion about how to design the data access.I can use DataAccess Layer with SQL helper, but the challenge is every new field that I add needs to be added in the sql helper.I am trying to see if there is a way to design the system, so that it appears in the front end when a new field is added. I don't want to have in the ASPX files (binding in controls) I want to have ability to change items in code. Essentially I am trying to see the best option to have a database application.
View 1 RepliesArchitecture :: Use STATIC Methods In Data Access Layer?
Feb 4, 2011I 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 ?
View 3 RepliesArchitecture :: Using Data Sources Vs. Using Data Access Layer To Populate Presentation Controls?
Mar 17, 2010We are using a tierd design with a Data Access Layer and classes for everything we need. This serves as an advantage because we do not have to write querys over and we can separate the Presentation layer from the Data Access Layer and Business Rules.I have always in the past populated GridViews, DataLists, repeaters,etc with SqlDataSources. This is what I have become accustomed to and I feel like it is simple. For querys such as Select * from Members, I feel like using a DataSource is simpler than having to go in the code and calling methods to populate and DataBind these presentation controls.
I am working with a gentleman who has introduced me to the world of Data Access Layers and we are breaking everything down into simeple, but effective queries to populate controls and do what we need to accomplish with this application. He is not very approving of using any type of DataSource. We are disagreeing on the time and place to use these class methods to call the database.So my question is, which is more widely used in the programming world? Do most people use DataSources to populate presentation controls regardless of the Data Access Layer they are working with? Which type of queries are best suited for a DAL - simple, populating queries or complicated joins and upserts?
Architecture :: Access Membership And Profile Data From C# Windows Service?
Feb 23, 2010I want to access membership and profile objects and wants to access profile properties that I have defined in my web app web.config file, from a windows service. I have used this code
foreach (MembershipUser user
in Membership.GetAllUsers())
{
ProfileCommon userProfile = profile.GetProfile(user.UserName);
}
But its giving the followin errors The type or namespace name "ProfileCommon" could not found (are you missing a using directive or an assembly reference?) The type or namespace name "MembershipUser" Could not found (are you missing a using directive or an assembly reference?)
Architecture :: Exception Handling Between Data Access Layer And Code Behind?
Jul 20, 2010If an error happens in the DA_layer, how do I pass it do the code_bedhing to show the user?
[Code]....
Architecture :: How To Pass The Data Between Data Access Layer And Business Acces Layer
Jun 3, 2010here 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.
View 7 RepliesArchitecture :: Data Access Layer And Business Logic Layer?
Jun 24, 2010I 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
{
public int GetProductName(string productId)
{
ProductDataSet.ProductDataTable prodData = Adapter.GetProductById(productId);
[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?
Architecture :: Use Ms Access In Place Of Ms Sql?
Nov 25, 2010I develop a simple window application in this application i can use ms sql but i want to learn how to use ms access.
View 5 RepliesWhich Architecture Use To Access A Database With Web Services
Sep 10, 2010Suppose we are building a web-based application to retrieve and enter information into a database. The user-interface invokes web services. Which architecture would use for the application.
View 10 RepliesWeb Application Architecture - Access The Files Of Project A
Aug 18, 2010I have two projects (Project A and Project B), these projects are hosted in different locations and on different servers. Project B want to access the files of Project A. which technique is required to fulfill my requirements.
View 1 RepliesArchitecture :: Retrieve Access Point Information?
Sep 15, 2010I've many wifi access point that are giving me connection inside an intranet, every access point is located in a wanted position of course, and my big problem is to know to which access point i'm connected trough a web page!Let me say access point named "A", and access point named "B", i must retrieve, with a web page, to which access point the client is connected because in that way i'll get the right position of my mobile
View 1 RepliesArchitecture :: Want Application To Provide A Web Ui For Remote Access?
Nov 2, 2010i want my application to provide a web ui for remote access, but i do not host that web page in IIS, because i do not want everyone install IIS on their home PC.
i spend some reading the asp.net pipeline, but still not figure how to load the .aspx file in my code.
Architecture :: Access Class Files Not In App_Code Folder
Feb 25, 2010I have a single project. and I have two folder in it. In the 1st folder I have a class named Class1 and in the 2nd folder I have a class named Class2. Can anyone tell me how I can access members of Class1 in Class2. I have tried by adding namespace in Class1 and Using that namespace in Class2. But it is giving error. It is easy to access classes or their members from App_Code folder. I don't want to put my classes in app_code folder.
View 3 RepliesArchitecture :: Should Let External Classes Access Webform Controls
Sep 24, 2010I was wondering if you should write code so that external classes and functions of that external class can access the webform controls in the main class???
Or should you only use the external class to process some data, return that data back to the main class (that instantiated that external class object) and then have an internal function in the main class to deliver the data to the control? (back to the screen)
Architecture :: Give Access To Users (like An Intranet) Discreetly On The Website
Apr 22, 2010I'm quite newbie and i need to give access to the website at a very low cost, but just few people, how did you guys manage it, to hide the connection link to the public. I mean is there a better way or not to manage this. I don't know if I'm clear. What would be the cheapest way to manage this user account?
View 4 RepliesArchitecture :: Allowing Access To Multiple Customers For One User With Url Rewriting
Jan 27, 2010I am currently developing a solution in which the user logs in once and can work on multiple customers at the same time on my site.I've looked at all possible solutions involving sessionid having stored the customerid, to launching a new browser session so i could have multiple sessions for one users etc. I also looked at using cookieless sessions.But the all fail because it's not a simple solution and in my opinion a simple solution is most of the time a good and predictable solution.
Therefore i came up with the idea to use url rewriting(i've seen this used in other applications). When the user opens a customer, i would like to start his url as follows "~/Customers/xxxxxxx/*.aspx" where xxxxxx represents the customerid. and *.aspx represents a complete subset of pages of my site. This would allow me to use a simple technique to use multiple user sessions within a single asp.net session.
Now coming to my problem, I have never done some url rewriting, therefore my questions:
- Is this possible.
- Can i protect all the pages that need a customerid as input(come to think of it, if no customerid in the querystring, redirect to a selection screen would be sufficient).
- How do i adopt all urls used in a sitemap etc in a structured way.
Architecture :: Keeping Information In Memory That Any User Can Access Easily?
Mar 20, 2010I want to read some information from an xml file and store it ready in memory so that it can go out with every page response without being reloaded from the xml on every request.
What is the best way of doing this?
It looks to me like there are 2 options. Either create a class with static fields that the information is stored in. Or create a class with public fields that the info is stored in and create an instance of that class at application level.
Is that correct, are both of those options viable? or will I not be able to access the fields in the second method without creating an instance of the class in the code that responds to the page request(basically if you create an instance of a class at application level can you use that instance from within code anywhere in your website as long as it is public)?
Architecture :: Impact Of Using Static Methods In Business Access Layer In 3 Tier Applciation?
Aug 25, 2010is there any impact of using static methods in Business Access layer in 3 tier applciation,
View 4 RepliesArchitecture :: Should DAL Reference Added In Presentation Layer? How To Access The Instance Of Table In Presenta
Mar 3, 2011I creating 3 tier arch wpp in VS 2010. I added the BusinessAccessLayer refernce in Presentation Layer. and I created DataAccessLayer[DAL] and ORM [DBModel.DBML]. when i try to create the instance for the Table in presenation layer[default.aspx], The Table name is not shown.After adding the DataAccessLayer refernce in the presentation layer, the table name[MM_User] instance are shown.Is it the right method [Adding the DAL refernce in Presenation Layer]? If not, whats the solution for for accessing the instance of the tables[MM_User].Is it related to the Creating the DataContextWrapper class in DAL?
View 5 RepliesPhp - MVC Architecture Decision - Refactor Existing Approach Into Controllers / Views And Database Access
Feb 12, 2011Consider the following scenario: Page written in classic ASP or PHP, which is rendering a data report (series of HTML tables for simplicity). There is one main database query and then multiple sub queries as the page renders. The report is split into sub panels, which correlate to a sub query. Therefore:
Main database query. Loop over result. For each row, execute sub query and render report panel. How would you architect a similar report using the MVC pattern? This can be split into two parts: Efficiency at database level of multiple queries, which are dependent on values from an outer query. If all data was processed and prepared in the controller, would this also be deemed inefficient if looping within the controller and then again in a view to render. Could sub controllers be used or sub panels, which encapsulate smaller sections of logic i.e. loading data and rendering report panel.
Architecture :: Access SessionState - Via App1 To SessionState From App2?
Aug 21, 2010i'm interested to do the following - i geuss, i have no option to do that:
we have our "mainapplication" on a DB; we are tracking user-login status by switching a bit in the DB in the users data row.
we hvae a second application, the backend, which is the administration tool.
(the applications are put in seperate diretories on HD)
sometimes, we need to block/ban users. in some cases the users are logged in, when we "see them in action".
i'd like to build a button in the backend-application, which logss-out the user from the mainapplication.
for sure: i can access the same DB and switch the bit to "know" he's offline, but this will not kill the session on the mainapplication.
because: if a user is on/offline is also indicated by the session in the IIS. and as the IIS-session is active, the user may be already banned - but he will not be logged out automatically (and showing something like "you have been logged out because of a ban) one option would be to call the DB by each page-load to find out, if the user is logged on.
Architecture :: Articles/Links On Asp.Net Pipeline And Internal Request Processing Architecture?
Oct 4, 2010I am looking details on the internal working of asp.net architecture. The topics need to include the following:
Asp.Net Thread/Application Pools HttpRuntime HttpApplication - When and how it is set up How HttpContext is set up How objects can passed along the pipeline using HttpContext.Current.Items Why does modification of static variables requires locks in ASP.NET (advanced)IIS 7 Integration Mode
Architecture :: How To Design A Centralized Business Or Service Authentication Architecture
Sep 22, 2010i want to create a centralised business or Service authendication architecture in .net. for example, we have a clients like c1, c2, c3, c4, ... etc. everybody logins seperatly as well as grouply. ie, if client "C1" logins [with login authentication] he can access c2 , c3, c4 also without login authendication. So its like a google. if we enters gmail account, we can access orkut, picasa like that.. i need the cetralised architecture.
And, client "c1" seperately asks seperately how will be the authendication architecture.
so give me the single solution for both these two scenarios. how will be the architecture for these two and how is the Data Base (Login) Structure.
Architecture :: Entity Model Design Framework And N - Tier Architecture
Dec 25, 2010recently i've studied on ADO.NET's Entity Model Framework and say 'wow' as ORM is one of the fevourite pattern i practice..but suddenly i've come to an ambiguous situation when i'm going to start. i usually follow the following 3-tier architecture..
1. UI Layer
2. BLL - business logic layer
3. DAL - Data Access Layer
a. DTO / DAO
b. Gateway (contains the sql query/stored procedure and connection with DB)
now when i'm going to use the Entity Model Design,where the DBML/ .edmx File should be placed? Because many a times i'm using the DBML file as DTO because of the mapped objects.. in the same time, sometimes DBML ( .edmx file in .NET 4.0) contains CRUD methods and stored procedured method as well as methods with different selection operations,- which should be in Gateway. so where the .edmx file should be placed !?!! IN DTO namespace !? or in Gateway namespace!
moreover sometimes there is no need for the BLL which breaks the rules of inter-layer-communication (UI > BLL > DAL.Gateway)! what makes me confuse is, what should be the ideal n-tier architecture when i'll use the ADO.NET Entity Model Design Framework