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Cannot Attach An Entity That Already Exists Update

Permalink Posted 19-May-15 19:20pm Raul Iloc73.2K Add a Solution Add your solution here B I U S small BIG code Plain TextC++CSSC#Delphi / PascalF#HTML / XML / ASPJavaJavascriptObjective-CSQLSwiftPerlPHPPythonVBXMLvar < > Buy Download dbForge Studio for Oracle dbForge Studio for Oracle IDE for easy development and maintenance of Oracle databases. And even the model they have now is a tack on approach at best... Unfortunately I can't get this to work: public bool Update(tt_customer customer){ context = new TimeTrakkerContext(); tt_customer Tcust = context.tt_customers.Single(c => c.Pk == customer.Pk); context.tt_customers.Attach(customer, Tcust); context.SubmitChanges(); return true;} The have a peek at this web-site

Delphi Data Access Components Delphi Data Access Components Data Access Components for Delphi, C++Builder, and Lazarus dbExpress Drivers dbExpress Drivers A database-independent layer that defines common interface to provide fast access private static void AddNewPriceSettings(PRICE_SETTING priceSettingsInfo) { PRICE_SETTING priceSetting = new PRICE_SETTING(); // priceSetting.Prop1 = priceSettingsInfo.Prop1; priceSetting.Prop2 = priceSettingsInfo.Prop2; priceSetting.Prop3 = priceSettingsInfo.Prop3; // ... The modified source code should be: var P = DB.BookPromoCodes.OrderByDescending(X => X.Id).FirstOrDefault().Id; foreach(var i in Model.BookDetail) { PromoCodeForSpecificBook obj = new PromoCodSpecificBook(); //Create your entity! Terms of Service Layout: fixed | fluid CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100 Rick Strahl's Web Log Wind, waves, code and everything in between... http://stackoverflow.com/questions/2605657/cannot-attach-an-entity-that-already-exists

It is urgent, thanks! Is "she don't" sometimes considered correct form? Roberto May 22, 2008 # re: LINQ to SQL and attaching Entities Great articles, your're right, i encounter the same problem.And MORE, when you have an array of serialized "Products" entity Alex on ASP.NET April 03, 2008 # LINQ to SQL Entity Base - Disconnected LINQ LINQ to SQL Entity Base - Disconnected LINQ Lars-Erik April 25, 2008 # re: LINQ to

The updating of the fields is tracked by the object tracker. Attach is meant for adding new instances of objects to a new instance of a DataContext after the objects have been deserialized from another tier or equivalent. asked 4 years ago viewed 801 times active 4 years ago Related 14linq2sql: Cannot add an entity with a key that is already in use6Cannot attach an entity that already exists3System.InvalidOperationException: Browse other questions tagged c# linq-to-sql or ask your own question.

Add-in salt to injury? MediaType.Contains(mediaType)) { // it is OK to set the local instance // to the instance-level variable context = this.InformationDataContext; } else { // if the item IS found it needs to Brett March 05, 2008 # re: LINQ to SQL and attaching Entities I gotta remember to read update posts before spouting off. http://stackoverflow.com/questions/8887158/cannot-attach-an-entity-that-already-exists Consider making a small donation to show your support.

what was I going to say again? what i am trying to accompalish here is take a row from table Indent then add new Indent ID and Series and save that record as new record. Thank you for your assistance, we will consider the possibility of changing this behaviour. Buy Download ODAC ODAC Being a feature-rich and high-performance library of components that provides native connectivity to Oracle from Delphi, C++Builder, Lazarus (and Free Pascal) under Windows, MacOS, iOS, Android, Linux,

Learn more Schema Compare for Oracle Schema Compare for Oracle Tool for safe comparison and synchronization of database schemas, easy analysis of database structure differences and deployment of changes to a http://forums.asp.net/t/1420514.aspx?Cannot+attach+an+entity+that+already+exists+ Buy Download SSIS Components for MailChimp SSIS Components for MailChimp A set of SSIS Data Flow components for SQL Server Integration Services (SSIS) packages that includes Source component with convenient editor Buy Download SSIS Components for SugarCRM SSIS Components for SugarCRM A set of SSIS Data Flow components for SQL Server Integration Services (SSIS) packages that includes Source component with convenient editor Change whatever you like but keep the original key, then try to attach using the new values and the original values.Aside from the technical stuff, if you really want to use

Why are password boxes always blanked out when other sensitive data isn't? http://electrictricycle.net/cannot-attach/cannot-attach-the-file-as-database-entity-framework.html Buy Download dotConnect for SQL Server dotConnect for SQL Server A database connectivity solution for SQL Server built over ADO.NET architecture and a development framework with number of innovative technologies. JohnL October 14, 2010 # re: LINQ to SQL and attaching Entities I was irritated by this same problem, but found a solution through reflection - I just made a generic The second line in your method does that.

If you encounter problems with it in one of your application scenarios, please describe this scenario so that we can suggest a solution. After insert first record exception Generates. Not the answer you're looking for? Source Ryan Haney August 13, 2007 # re: LINQ to SQL and attaching Entities Would it be possible to add a generic Copy method on a base class that could be called

It provides opportunity to work with PostgreSQL directly via TCP/IP without involving PostgreSQL Client. Is adding the ‘tbl’ prefix to table names really a problem? Direct Mode allows to avoid using PostgreSQL client software, that increases developed application performance and simplyfies deployment process.

Great post Rick!

You may learn interesting article about entity cloning http://www.codeproject.com/Articles/137853/Cloning-the-Entity-object-and-all-related-children Hope this helps. Your Email This email is in use. Excel Add-ins Excel Add-ins Excel add-ins that allow you to work with database and cloud data in Microsoft Excel as with usual Excel spreadsheets. Leveling Pokemon using the Lumiose Tower infinite loop path Why does Friedberg say that the role of the determinant is less central than in former times?

Leveling Pokemon using the Lumiose Tower infinite loop path One Very Odd Email Storage of a material that passes through non-living matter Can a countable number of intersections of subsets or If you encounter problems with it in one of your application scenarios, please describe this scenario so that we can suggest a solution. Direct Mode allows to avoid using SQL Server Native Client, that increases developed application performance and simplyfies deployment process. http://electrictricycle.net/cannot-attach/cannot-attach-an-entity-that-already-exists-delete.html Are “Referendum” and “Plebiscite” the same in the meaning, or different in the meaning and nuance?

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