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Entity Framework Value Cannot Be Null. Parameter Name Source

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dynamics error XperiDo Support, powered by Atlassian Confluence, a Confluence theme by RefinedWiki In your base class, ignore the property using an Ignore attribute 2. you have to manually change the state. Am I interrupting my husband's parenting? navigate here

Since my primary key is populated, my question is why would the EntityKey be null? What am I doing wrong? Regards Starain MVC4 We are trying to better understand customer views on social support experience. Please review the stack trace for more information about the error and where it originated in the code.

Entity Framework Value Cannot Be Null. Parameter Name Source

Parameter name: key] System.Collections.Generic.Dictionary`2.FindEntry(TKey key) +11032629 System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value) +12 System.Data.Entity.ModelConfiguration.Configuration.Mapping.SortedEntityTypeIndex.Add(EdmEntitySet entitySet, EdmEntityType entityType) +79 System.Data.Entity.ModelConfiguration.Configuration.Mapping.EntityMappingService.Analyze() +421 System.Data.Entity.ModelConfiguration.Configuration.Mapping.EntityMappingService.Configure() +29 System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.ConfigureEntityTypes(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) +374 System.Data.Entity.ModelConfiguration.Configuration.ModelConfiguration.Configure(DbDatabaseMapping databaseMapping, DbProviderManifest providerManifest) +448 System.Data.Entity.DbModelBuilder.Build(DbProviderManifest No sdf file shows up in my App_Data folder or anywhere else apparently. How small could an animal be before it is consciously aware of the effects of quantum mechanics?

Never have any problems when writing Sql queries. Browse other questions tagged c# entity-framework entity-framework-4 or ask your own question. Parameter name: key Jan 06, 2015 02:25 PM|ignatandrei|LINK azlamptb private JbOContext db = new JbOContext(); please show class definition forJbOContext MVC4 .NET Teacher | .NET Videos 5 minutes Reply Starain chen... Value Cannot Be Null Entity Framework Reply Imar_Spaanja...

All-Star 110210 Points 18056 Posts MVP Re: Value cannot be null. Add Migration Value Cannot Be Null Parameter Name Filename Privacy statement  © 2016 Microsoft. It turns out that loading from an entity that is in state added is not a safe stuff, here is correct snippetEntityKey key = new EntityKey("ModelTestBase.Customers", entityKeyValues); order.CustomersReference.EntityKey = key; context.AddToOrders(order); Visual Studio ALM MVP View all posts by Ricci Gian Maria Posted on February 18, 2009Author Ricci Gian MariaCategories .NET framework, Entity Framework 6 thoughts on “Entity Framework relations and entityKey”

but the EntityKey is still null and the EntityState is Detached. Value Cannot Be Null. Parameter Name: Connection E.g. but the EntityKey is still null..." In EF, normally the primary key in the DB is the EntityKey in the Model. asked 4 years ago viewed 8934 times active 3 years ago Linked 1 Entity Framework version out of date and not allowing the Entry method - how do I fix this?

Add Migration Value Cannot Be Null Parameter Name Filename

The exception - navigation being null happens with rc1 bits but no longer reproduces in latest bits. https://social.msdn.microsoft.com/Forums/silverlight/en-US/c7c59ee8-1158-4708-b9e2-58465ebca5ce/getting-an-object-with-a-null-entitykey-value-cannot-be-attached-during-deletes?forum=silverlightwcf How do I calculate passive perception for a monster? Entity Framework Value Cannot Be Null. Parameter Name Source Reload to refresh your session. Value Cannot Be Null Parameter Name Entity Mvc A possible solution isusing (ModelTestBase context = new ModelTestBase()) { Orders order = new Orders(); order.Freight = 1.0M; order.RequiredDate = order.OrderDate = DateTime.Now; order.Customers = context.Customers.Where(c => c.CustomerID == "ALFKI").First(); context.AddToOrders(order);

When it attempts to attach it to the ObjectContext, the exception in the subject is thrown. check over here UPDATE: Copy Paste error the GetAProduct method has been altered. Alk. Parameter name: key Jan 06, 2015 02:39 AM|azlamptb|LINK public ActionResult Edit(int id) { var row = db.CompanyModels.Find(id); return View(row); } this is that code and Value Cannot Be Null. Parameter Name: Entitytype

Parameter name: key Jan 06, 2015 09:51 AM|azlamptb|LINK i don't use here entity data model i create model and contextdb .it was working fine till before two days ..but now !! All rights reserved. Parameter name: keyCauseThis error occurs when the selected primary entity is new. his comment is here Guessing game - Is it a 40?

I might end up relieving the model classes of that responsibility eventually. Value Cannot Be Null. Parameter Name: Entityset something like this: modelBuilder.Entity().Ignore(x => x.ModelType); 3. How do I sort files into a sub-folder based on filename part?

When you need to setup a relations EF needs only to know the key of related object, it does not really cares about other properties of Customers object, it needs only

Parameter name: key Jan 06, 2015 05:08 AM|ignatandrei|LINK azlamptb public DbSet CustomerModels { get; set; } Ok. But you have a similar entity in database with the same primary key. I have searched for this error online but the solutions seem to answer questions that do not directly relate to my setup. Argumentnullexception: Value Cannot Be Null. Parameter Name: Entitytype more hot questions question feed lang-cs about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation

Parameter name: source0Entity Framework: Sql Parameter already contained by another sql collection Hot Network Questions I just saw this bird outside my apartment. A more basic question that might get me jumpstarted on troubleshooting is when is the EntityKey be populated, and how can I examine it when debugging on the client side? Privacy Statement| Terms of Use| Contact Us| Advertise With Us| CMS by Umbraco| Hosted on Microsoft Azure Feedback on ASP.NET| File Bugs| Support Lifecycle Blog Sign in Join ASP.NET Home Get weblink In your OnModelCreating use the fluent API to ignore the property.

Parameter name: key Jan 06, 2015 10:08 AM|azlamptb|LINK public ActionResult Edit(int id = 0) { CustomerModel customermodel = db.CustomerModels.Find(id); if (customermodel == null) { return Here is the ProductsDb class public class ProductsDb : DbContext { public ProductsDb(string connectionString) : base(connectionString) { } public ProductsDb() { } public DbSet AProducts; public DbSet BProducts; public DbSet CProducts; You might try posting the Edit method of your CompanyController to see if that might shed some light on the issue. Making a large file using the terminal Was there no tax before 1913 in the United States?

Parameter name: key Aug 03, 2011 03:29 AM|Imar_Spaanjaars|LINK I don't think you can have a type such as Type as a property on your class that can be serialized to the How come the Kendo guys are ignoring this? so is your primary key different from EntityKey here? Though above code throws NullRef exception with latest code.

Center trace between two pads What is safer to use (in general terms), online banking software using the mobile app or using a browser on a desktop OS? In troubleshooting, I've even gotten this error when doing something along the lines of: Context.Appointments.Remove(Context.Appointments.First()); Context.SubmitChanges(); Any tips on where to look while troubleshooting? Parameter name: entitySet up vote 8 down vote favorite Hi I have a fairly standard setup with simply POCO classes public class Project { public int ProjectId { get; set; } I just saw this bird outside my apartment.

Thank you! This stuff works only to set relations, if you try to call order.CustomersReference.Load() to load related customer you will get exception, if you call it before the order object is attached Assigning a unique representation to equivalent circular queues more hot questions question feed lang-cs about us tour help blog chat data legal privacy policy work here advertising info mobile contact us If I receive written permission to use content from a paper without citing, is it plagiarism?

Though some of the convention can remove the present foreign key and after that we try to run convention on such removed foreign key. As Sergey Berezovskiy has demonstrated in his answer, EF requires all class members to be public properties to initalise them. You may share the project on the OneDrive, we will check it. Why is this C++ code faster than my hand-written assembly for testing the Collatz conjecture?

share|improve this answer answered Dec 13 '11 at 22:40 Shymep 1,3621921 I utilized that AttachTo method like this: entities.AttachTo(entities.UserInfoes.EntitySet.Name, userInfo); And that takes care of the error.