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  • Implementing optimistic Concurrency with ObjectDataSource & cascading dropdownlist

    Hello there, I have been trying to implement a formView to update recrords in an Oracle database, but I seem to be getting a concurrency violation error. I am currently the only user and the record is only access through one web browser. I also setup the FormView DataKeyNames to the primary key of the...
    Posted to Data Access and ObjectDataSource Control (Forum) by imanour on 03-26-2007, 12:00 AM
    Filed under: update, DAL, BLL, DropDownList, objectdatasource, C#, object data source, ObjectDataSource RowUpdating, Business Object, Asp.Net 2.0, ASP.NET

  • FileUpload in DetailsView fails with UpdatePanel

    Hi I'm developing a project in ASP.NET C#, with SQL Server Express 2005, on Windows Vista. I have a GridView, and a DetailsView on an aspx page. The GridView displays all items in a database that has a certain ProductID (The items is Pictures) The DetailsView displays the selected row of the GridView...
    Posted to ASP.NET AJAX UI (Forum) by martinhn on 04-18-2007, 12:00 AM
    Filed under: DetailsView, BLL, Gridview, C#, Asp.Net 2.0, UpdatePanel

  • DTO and Database Views

    I have a database table that has around 30 columns with over 3,000 rows. I am building a 3 tiered environment in .NET. The home page displays a view of the data (only about 3-4 columns worth). How can I represent this as a business entity? I don't want to pull in all of the columns since it only...
    Posted to Architecture (Forum) by czuvich on 05-25-2007, 12:00 AM
    Filed under: ASP.NET Architecture, Best Practices, bll, C#

  • BLL and Strongly-Typed Datasets

    I was reading Scott Mitchell's tutorial on multi-tier design, which has been pretty informative so far, found here: http://www.asp.net/learn/dataaccess/tutorial02cs.aspx?tabid=63 However, I noticed that all the examples show data being loaded into asp.net ui components (datagrids, etc). What if I...
    Posted to Architecture (Forum) by moogleii on 05-22-2007, 12:00 AM
    Filed under: bll, dal, .NET, business logic layer, C#

  • Re: Using Custom Business Objects vs. Datasets

    a couple of suggestions on investing your time, definitely check out martin fowler's web site and take a look around, specifically http://www.martinfowler.com/eaaDev/uiArchs.html To clear up some things which may cause confusion, "tiers" generally refer to the physical tiers/levels of your...
    Posted to Architecture (Forum) by The.Next.Peter.Parker on 05-22-2007, 12:00 AM
    Filed under: csla, bll, WCSF, dal, provider model, provider pattern, design pattern, business logic layer, C#

  • [:S] PL,BLL, DAL, is it REALLY necessary for a good application?

    I want to build a basic CRM tool using windows forms. It will have a several clients accessing a database over a network. All articles in MSDN say I should build the app separating PL, BLL and DAL, but it seems too complicated, too much work. Can somebody from the "real world" please tell me...
    Posted to Getting Started (Forum) by cunharubens on 07-02-2007, 12:00 AM
    Filed under: DAL, architecture, C#, windows form, c# code, BLL, Presentation Layer

  • Transactions across DAL's

    The method below is part of my PersonDalc class. I want to be able to execute the update method, but I also want to be able to run the Update method on the child objects: Address and Phone. My problem is that I don't see how to have the Person Update rollback if the Address or Phone updates fail...
    Posted to Architecture (Forum) by imhobbes on 08-19-2007, 12:00 AM
    Filed under: bll, dal, architecture, business logic layer, C#, transaction

  • .Net 3.5 Data Access; where to start

    In my earlier designs I created separate assemblies for DAL, BLL and UI. The DAL assembly would also contain the business entities, like the Users.cs and so forth. With the introduction of LINQ to SQL in .Net 3.5 would anything change on how we should be design aour applications? Does anyone have any...
    Posted to Architecture (Forum) by officialboss on 09-03-2007, 12:00 AM
    Filed under: bll, dal, C#, Data access helper components, data access layer, .net 3.5

  • Application structure for Membership

    Hi, ive been following the excellent Data Access tutorials by Scott Mitchell and applying them to my own C# application. Ive set up my application to use the Membership provider but i am also storing additional user information in my own users table. Ive linked my own Users table to the aspnet_Users...
    Posted to Architecture (Forum) by graemebenzie on 09-19-2007, 12:00 AM
    Filed under: bll, membership role provider, business logic layer, C#, 3-tier programming, GridView, layered architecture

  • TotalRowCount with added parameters

    Hello, Not sure if this is a C# or Data question, please forgive. I'm fairly new to C# and it's semantics, so any assistance is greatly appreciated. I need to get the total number of records from a query, but my version of the query includes 3 int parameters (param_1, param_2, param_3) from a...
    Posted to Data Access and ObjectDataSource Control (Forum) by kalel4444 on 11-03-2007, 12:00 AM
    Filed under: BLL, C#, Sql Parameters
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