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Cannot Attach An Entity That Already Exists Delete

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Does anyone know of a good article, video series, and or tutorial on the entity framework in 4.0?I've worked a lot with Linq to Sql, so I don't think I'll have Learn more Review Assistant Review Assistant A peer code review tool for Visual Studio. SQLite library is statically linked into developed applications, that increases application performance and simplyfies deployment process. View 1 Replies ADO.NET :: Add A Second Entity Based On The First Ones Key In EF4 Dec 23, 2010 For each entity I am inserting to a SQL Server database page

Buy Download Excel Add-in for Oracle Excel Add-in for Oracle Excel add-in that allows you to connect Microsoft Excel to Oracle, quickly and easily load data from Oracle to Excel, instantly bzburns August 13, 2007 # re: LINQ to SQL and attaching Entities This, as well as the nature of anonymous types (in my book, anonymous typing is what truly makes Linq View 3 Replies How To Remove / Delete 0..1 Entity In Entity Framework 4 Jan 5, 2011 I have an Events table and an InstallmentPlans table. The following will not work.using (EN myEN = new EN()){if (Cache.Get("CachPerson") == null) // Create Cache [code]....

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Where in my code do I put the hook to say, "update the history entity" and what should that hook look like? dbExpress Driver for SQLite also has support for SQLite database encryption to protect your data from unauthorized access. When you add new records via MGMT Studio does the primary key increment? How is it packed?

Monday, March 15, 2010 8:41 AM Reply | Quote Answers 0 Sign in to vote I agree that having to create a temporary ParkHelpDatabaseDataContext object just to do these changes shouldn't asp.net linq entity share|improve this question edited Aug 20 '12 at 13:53 asked Aug 20 '12 at 13:15 bart_dp 2519 Is there a reason you're avoiding record updates? –Grant Buy Download dbExpress Driver for MySQL dbExpress Driver for MySQL dbExpress is a database-independent layer that defines common interface to provide direct access to MySQL from Delphi and C++Builder on Windows Check the following code.TimeManagerDataAccessDataContext objTimeManagerDataAccessDataContext = new TimeManagerDataAccessDataContext();public void AddNewSupportingDocument(IEnumerable objSupportingDocument ,int intStatusId) { if (objSupportingDocument != null) { DeleteDocuments(intStatusId); foreach (var SupportDocument in objSupportingDocument) { objTimeManagerDataAccessDataContext = new TimeManagerDataAccessDataContext(); objTimeManagerDataAccessDataContext.GetTable

MySQL Tools MySQL Tools Must-have tools for MySQL database development, management and administration. https://social.msdn.microsoft.com/Forums/en-US/61785bc6-f092-4075-ab80-402ca5ab158d/cannot-add-an-entity-with-a-key-that-is-already-in-use?forum=linqtosql Sep 24, 2010 I am trying to do something like this: [Code]....But ofcourse it is not working as I want to. From this code :public virtual T Insert(T entity){return Context.Set().Add(entity);}The cast exception is like "impossible to cast ...Collection'1(Entity) to type (Entity)" I can't figure out why. Is this a better way of checking?

Is it acceptable to ask an unknown professor for help in a related field during his office hours? have a peek at these guys Is it being generated? –James Dec 3 '12 at 14:06 | show 1 more comment 3 Answers 3 active oldest votes up vote 3 down vote accepted Finally After Much hassle Nope doesn't like that either. And where are you getting the PRICE_SETTING that is passed into the method?

I have my typed DataContex and one Static Public Var to initialize it located within the namespace AlpaCommon, like following:My partial datacontext***************// partial datacontext classnamespaceAlpaCommon{public partial class AlpaDataContext : System.Data.Linq.DataContext{//Insert method I altered the stored procedure parameter to match the entity, I deleted the stored procedure, readded, and reslected it as the Insert function. Privacy statement Help us improve MSDN. http://gpscheduler.com/cannot-attach/cannot-attach-an-entity-that-already-exists-deleteonsubmit.html You can leave a response, or trackback from your own site. 5 Responses to "Linq to SQL Quirks Part 2: DeleteOnSubmit and Entity not Attached" Linq to SQL Quirks Part 3

Could you please describe in more details the scenario in which such behaviour causes problems? Learn more Schema Compare for MySQL Schema Compare for MySQL GUI tool for quick and easy MySQL and MariaDB database schema comparison and synchronization. Anyone know what it is?

ying515_huang Posts: 13Joined: Mon 21 Feb 2011 03:35 Top by ying515_huang » Tue 22 Feb 2011 05:41 ying515_huang wrote:StanislavK wrote:This is a peculiarity of LinqConnect identity tracking: entities are attached

I set the old entity to not valid (Datefield set to a date in the past, this field is part of the PK) and set the copied entity to DateTime.Now.Date. ADO.NET Providers for Clouds ADO.NET Providers for Clouds The fastest way to create .NET applications, working with cloud data. Inside the webservice I attach the object.Now I have to 'replay' and set the value again??? Download SecureBridge SecureBridge SecureBridge is a library of Delphi and C++Builder components for Windows, MacOS, iOS, Android, Linux, FreeBSD, both 32-bit and 64-bit, designed to protect connections between computers and trusted

Buy Download Data Compare for Oracle Data Compare for Oracle Tool for safe and efficient comparison and synchronization of Oracle data, convenient data differences management in a well-designed interface. StanislavK Devart Team Posts: 1710Joined: Thu 03 Dec 2009 10:48 Top by listonic » Fri 25 Feb 2011 08:50 I have a similar problem. Thank you for your assistance, we will consider the possibility of changing this behaviour. this content I searched how to disable the DataContext cache....

Incidentally Rob Connery also mentioned this in his LINQ SonicCast last week. I have a page where I'm creating a Show. Download dbForge Studio for MySQL dbForge Studio for MySQL MySQL and Maria DB management tool with well-designed GUI for easy database development and administration. Privacy statement Help us improve MSDN.

for your "Version" field, set "Auto generated value" to "True" (again, not sure if this is required), set "Nullable" to true, "Time Stamp" to "True" and "Type" to "System.Data.Linq.Binary".5. i get the error: "Cannot add an entity with a key that is already in use".I dont know why this is happening and is really bugging me. Thanks Tuesday, March 16, 2010 11:56 AM Reply | Quote 0 Sign in to vote I am wondering what is going on outside your calls to Add and Remove - especially Aug 9, 2010 What is the best way to cache an entity, so it can be used with linq ?

We will post here when our investigation is completed. share|improve this answer edited Dec 3 '12 at 14:29 answered Dec 3 '12 at 14:05 James 50.5k1290160 I couldn't get your last line in the answer...Do you want me Wednesday, March 17, 2010 11:40 AM Reply | Quote 0 Sign in to vote Yes, phDatabase is a global member. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

if I have something like this:Dim friend = (From f In context.prFriends _Select f).FirstOrDefaultListView1.DataSource = friendListView1,DataBind()The above gives me the following error: Data source is an invalid type. Get dbForge Schema Compare for MySQL and Maria DB, and dbForge Data Compare for MySQL products and save about 25%. The SP uses join of more than 1 table to return data. Direct Mode allows to avoid using MySQL client library, that increases developed application performance and simplyfies deployment process.

So rather than using LINQ directly in the front end UI I want an abstraction layer. so I call the delete method on user entity:[Code]....and the Usersinroles entities are deleted correctly instead of Profile that lives as an orphan in the db. Most of the online examples I show, use the single table. Consider making a small donation to show your support.

Download dbForge Studio for SQL Server dbForge Studio for SQL Server A powerful IDE for SQL Server management, administration, development, data reporting and analysis. ying515_huang Posts: 13Joined: Mon 21 Feb 2011 03:35 Top by StanislavK » Thu 24 Feb 2011 14:17 We will post here as soon as our investigation is completed, but cannot Wednesday, July 04, 2012 7:14 AM Reply | Quote 0 Sign in to vote Thanks I resolve the issue by assigning individual fields to new object a hectic task but it Jeremy January 24, 2008 # re: LINQ to SQL and attaching Entities It seems like you're all trying to do LinQ-to-Entities functionality only using LINQ-to-SQL instead.I'd recommend checking out the the