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dotnet ado.net : Best practice mapping sql-tables to .net objects
(Project-Management-Software) with Visual Studio .NET 2005 and SQL Server 2005 (ADO.NET). My problem is how to map the sql-server table to the .NET Object/class! Does it make sense to use typed datasets or is it better to create a class with a variable (property) for each column of the table. Who has any experience in such affairs? Perhaps there is a sample application available on the web ... (database application - windows forms) Thanks aaapaul
I agree. While my book does not delve into the OR mapping paradigm, Rocky
Lhotka wrote a couple as did Deborah Korata. -- ____________________________________ William (Bill) Vaughn Author, Mentor, Consultant Microsoft MVP INETA Speaker www.betav.com/blog/billva www.betav.com Please reply only to the newsgroup so that others can benefit. This posting is provided "AS IS" with no warranties, and confers no rights. __________________________________ Visit www.hitchhikerguides.net to get more information on my latest book: Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition) and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook) ----------------------------------------------------------------------------------------------------------------------- [quoted text, click to view] "Earl" <brikshoe@newsgroups.nospam> wrote in message news:e3quqZWQHHA.1016@TK2MSFTNGP04.phx.gbl... > Microsoft did all that for you, it's called a strongly-typed dataset. You > should buy some books to get started, otherwise you'll use quadruple the > time online trying to dig up all the resources. > > I question the judgment of someone who would commission you to create an > application with no experience at all -- it's hard enough when you have a > clue as to what's going on. Good luck. > > "aaapaul" <lvpaul@gmx.net> wrote in message > news:1169809296.114408.40540@k78g2000cwa.googlegroups.com... >>I am quite new in programming an I have to develop an application >> (Project-Management-Software) with Visual Studio .NET 2005 and SQL >> Server 2005 (ADO.NET). >> >> My problem is how to map the sql-server table to the .NET Object/class! >> >> Does it make sense to use typed datasets or is it better to create a >> class with a variable (property) for each column of the table. >> >> Who has any experience in such affairs? >> >> Perhaps there is a sample application available on the web ... >> (database application - windows forms) >> >> Thanks >> aaapaul >> > >
Microsoft did all that for you, it's called a strongly-typed dataset. You
should buy some books to get started, otherwise you'll use quadruple the time online trying to dig up all the resources. I question the judgment of someone who would commission you to create an application with no experience at all -- it's hard enough when you have a clue as to what's going on. Good luck. [quoted text, click to view] "aaapaul" <lvpaul@gmx.net> wrote in message news:1169809296.114408.40540@k78g2000cwa.googlegroups.com... >I am quite new in programming an I have to develop an application > (Project-Management-Software) with Visual Studio .NET 2005 and SQL > Server 2005 (ADO.NET). > > My problem is how to map the sql-server table to the .NET Object/class! > > Does it make sense to use typed datasets or is it better to create a > class with a variable (property) for each column of the table. > > Who has any experience in such affairs? > > Perhaps there is a sample application available on the web ... > (database application - windows forms) > > Thanks > aaapaul >
And Deborah Kurata has a new book coming out in March,
"Doing Objects in VB2005". I read it, and it really helped me understand how to implement the n-layer paradigm. It shows how to set up your classes, then use databinding to show the data on the screen, and how to create a Data Access Layer to do the updates. Robin S. ---------------------------------- [quoted text, click to view] "William (Bill) Vaughn" <billvaRemoveThis@nwlink.com> wrote in message news:uauGpEXQHHA.412@TK2MSFTNGP02.phx.gbl... >I agree. While my book does not delve into the OR mapping paradigm, >Rocky Lhotka wrote a couple as did Deborah Korata. > > -- > ____________________________________ > William (Bill) Vaughn > Author, Mentor, Consultant > Microsoft MVP > INETA Speaker > www.betav.com/blog/billva > www.betav.com > Please reply only to the newsgroup so that others can benefit. > This posting is provided "AS IS" with no warranties, and confers no > rights. > __________________________________ > Visit www.hitchhikerguides.net to get more information on my latest > book: > Hitchhiker's Guide to Visual Studio and SQL Server (7th Edition) > and Hitchhiker's Guide to SQL Server 2005 Compact Edition (EBook) > ----------------------------------------------------------------------------------------------------------------------- > > "Earl" <brikshoe@newsgroups.nospam> wrote in message > news:e3quqZWQHHA.1016@TK2MSFTNGP04.phx.gbl... >> Microsoft did all that for you, it's called a strongly-typed dataset. >> You should buy some books to get started, otherwise you'll use >> quadruple the time online trying to dig up all the resources. >> >> I question the judgment of someone who would commission you to create >> an application with no experience at all -- it's hard enough when you >> have a clue as to what's going on. Good luck. >> >> "aaapaul" <lvpaul@gmx.net> wrote in message >> news:1169809296.114408.40540@k78g2000cwa.googlegroups.com... >>>I am quite new in programming an I have to develop an application >>> (Project-Management-Software) with Visual Studio .NET 2005 and SQL >>> Server 2005 (ADO.NET). >>> >>> My problem is how to map the sql-server table to the .NET >>> Object/class! >>> >>> Does it make sense to use typed datasets or is it better to create a >>> class with a variable (property) for each column of the table. >>> >>> Who has any experience in such affairs? >>> >>> Perhaps there is a sample application available on the web ... >>> (database application - windows forms) >>> >>> Thanks >>> aaapaul >>> >> >> > >
I would use an Object Relational Mapper product, LLBLGenPro recommended.
And as Earl said, good luck. -- Miha Markic [MVP C#, INETA Country Leader for Slovenia] RightHand .NET consulting & development www.rthand.com Blog: http://cs.rthand.com/blogs/blog_with_righthand/ [quoted text, click to view] "aaapaul" <lvpaul@gmx.net> wrote in message
news:1169809296.114408.40540@k78g2000cwa.googlegroups.com... >I am quite new in programming an I have to develop an application > (Project-Management-Software) with Visual Studio .NET 2005 and SQL > Server 2005 (ADO.NET). > > My problem is how to map the sql-server table to the .NET Object/class! > > Does it make sense to use typed datasets or is it better to create a > class with a variable (property) for each column of the table. > > Who has any experience in such affairs? > > Perhaps there is a sample application available on the web ... > (database application - windows forms) > > Thanks > aaapaul >
I prefer to use my own custom built object mapper.
The source code is available via the link below: -- Robbe Morris - 2004-2006 Microsoft MVP C# I've mapped the database to .NET class properties and methods to implement an multi-layered object oriented environment for your data access layer. Thus, you should rarely ever have to type the words SqlCommand, SqlDataAdapter, or SqlConnection again. http://www.eggheadcafe.com/articles/adonet_source_code_generator.asp [quoted text, click to view] "aaapaul" <lvpaul@gmx.net> wrote in message
news:1169809296.114408.40540@k78g2000cwa.googlegroups.com... >I am quite new in programming an I have to develop an application > (Project-Management-Software) with Visual Studio .NET 2005 and SQL > Server 2005 (ADO.NET). > > My problem is how to map the sql-server table to the .NET Object/class! > > Does it make sense to use typed datasets or is it better to create a > class with a variable (property) for each column of the table. > > Who has any experience in such affairs? > > Perhaps there is a sample application available on the web ... > (database application - windows forms) > > Thanks > aaapaul >
AaaPaul,
I would in your way first look if the ADONET methods fixes your problem before you start using methods invented in the past before the invention of the so well to use Strongly Typed DataSets (XSD) on SQL type databases. Here is a simple sample how to start with it, it takes 10 minutes and uses completely the DataAdapter, the you can say now standarised Dataset with its DataTable idea instead of creating all kind of free style dataobjects. http://www.vb-tips.com/dbpages.aspx?ID=1139f14a-c236-4ad7-8882-b1ed16424252 (I know that I get now a lot of comments). For books around this, obviously without that I have read them, David Sceppa and William Vaughn. Cor "aaapaul" <lvpaul@gmx.net> schreef in bericht news:1169809296.114408.40540@k78g2000cwa.googlegroups.com... [quoted text, click to view] >I am quite new in programming an I have to develop an application > (Project-Management-Software) with Visual Studio .NET 2005 and SQL > Server 2005 (ADO.NET). > > My problem is how to map the sql-server table to the .NET Object/class! > > Does it make sense to use typed datasets or is it better to create a > class with a variable (property) for each column of the table. > > Who has any experience in such affairs? > > Perhaps there is a sample application available on the web ... > (database application - windows forms) > > Thanks > aaapaul >
thanks to you all !
I found a good sample, too. http://weblogs.asp.net/scottgu/archive/2006/01/15/435498.aspx I will study this and if this works, I don=B4t need any wrapper tools. aaaPaul P=2ES.: I have to correct - I am new in programming .net, not basic=20 programming - I made some small tools with vb6
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