MVC :: ADO.NET Framework And Error With Foreign Key?
Apr 21, 2010
I have a database with the structure
Client
--------------
ClientID -> PK
FistName
LastName
AddressID -> FK to Address.AddressID
and
Address
--------------
AdressID -> PK
City
CityCode
I created an initial set of address so
0 - London - 1000
1 - Paris - 2000
2 - Madrid - 3000
3 - Lisbon - 4000
I'm using Visual Studio 2008 with MVC.
Framwork to use ADO.NET to create the model
My view is:
[Code]....
My model is just: ... Private _dataModel As New just2testDBEntities
[Code]....
When post it retun erro
{"Can not insert the value NULL into column 'City', table 'dbo.Address'; column does not allow nulls. INSERT fails. ... statement terminated."}What I was intended to do is to insert a client and not a client and an address.
1 - Is it necessary to have foreign key to obtain a Relation in Entity Framework between each entity.? 2 - I have a Language Table and many many table with a foreign key related to the language table. Is it right to add this foreign key or I should do something else ? Ex: Language LangID LangName
I m try to insert record to table, its working well without foreignkey using Entity model. But i need to insert foreign key. I used the following query, its not working well via Entity model.
objFacility.FacilityCategoryReference.EntityKey = new System.Data.EntityKey("testEntities.test", "id", 10);
How can I give set foreign key value field in Entity Framework. I have Kartlar entity (related from kartlar table). I need simple save method this field but, RehberID, KAmpanyaId,BirimID is foregin Key....
public static class SatisServicesUpdateTables { public static void SaveKartlar(int RehberID, int KampanyaID, int BrimID) { using (GenSatisModuleEntities genSatisKampanyaCtx = new GenSatisModuleEntities()) { Kartlar kartlar = new Kartlar(); kartlar.RehberReference.EntityKey = new System.Data.EntityKey("genSatisKampanyaCtx.Rehber", "ID", RehberID); kartlar.KampanyaReference.EntityKey = new System.Data.EntityKey("genSatisKampanyaCtx.Kampanya", "ID", KampanyaID); kartlar.BirimReference.EntityKey = new System.Data.EntityKey("genSatisKampanyaCtx.Birim", "ID", BrimID); kartlar.Notlar = "hfhfhfhfhfhfghfghfgfghk"; genSatisKampanyaCtx.AddToKartlar(kartlar); genSatisKampanyaCtx.SaveChanges(); } } }
But it throws to me : ArgumentException was unhandled by user code link text
how to handle foreign keys with Entity Framework, when editing or adding a new record. For example, I have a person table, which has a timezone_id linking to my timezone table.
But the model seems to not include timezone_id. I see it's a new way of doing things, but ... how do I store my record?
My method:
[code]...
I can't do u.timezone_id = timezoneid;
I only have u.timezone (which seems to be the actual entity), and u.timezoneReference, which I am not sure what to do with.
I developed and entity framework (.edmx) application in 4.0 in that i got all the data of my querying table and its foreign key referenced tables data also. but when i change my project to 3.5 i am unable to get the data of foreign key referenced tables data.
Adding data into kartlar table (RehberID,KampanyaID,BrimID) is ok. But which Kart'ID created? I need to learn which Id created after adding data (RehberID,KampanyaID,BrimID) into Kartlar?
[code]...
How can I do that? I want to get data from Kartlar which data I added?
I have a gridview displaying "registrationtype id" (FK) from the registration table. I want it to display the related name instead of the id from the registartiontype table.
I'm trying to insert a new EF object containing a reference to a related table via foreign key, and cannot get the reference stored in the new object. I have two tables in a SQL Server 2008 Database:
Component Templates PartGroups
with a Foreign Key linking them thus: ComponentTemplates:ID [0..1<->*] PartGroups:ComponentTemplateID
I have imported these tables into a .NET web application project .edmx file (using a new ADO.NET Entity Data Model), and then created a Data Service which I then reference in a Silverlight 3.0 project. The objects are available as expected in the data context called by my Silverlight app and load correctly. Now, when I try to save a reference of ComponentTemplate into a newly created PartGroup, the PartGroup object is created in the database, but the value of ComponentTemplateID in the newly created table record is NULL.
[Code]....
(Note that _ctCtrl.ComponentTemplate is a confirmed non-NULL object reference to the parent object on which PartGroup is a child)
I've created a new ASP.NET website. I've generated an Entity Data Model from my database and have dropped a entitydatasource and gridview onto my page and wired up the gridview to pull from the entitydatasource. Now I get columns like this: id extension prefix did_flag len ten_id restriction_class_id sfc_id name_display building_id floor room phone_id department_id
In each case where the item is named something_id this reflects a foreign key relationship in the database - and I did choose to have the EDM expose foreign key relationships. I'd like to make it so the gridview pulls in the values for these foreign keys rather than just showing the ID numbers - so, for example, department_id might have a value of "101" right now but it should pull from the department table "Marketing".
I've got 2 tables where each has a primary key which is also the identifier (Both fields called "id" in each table) In the "picture" table as one of the fields I've got the photoalbumid (The id of the "photoalbum" table). This field is just an int field. I'm getting the following error: "Cannot insert explicit value for identity column in table 'Picture' when IDENTITY_INSERT is set to OFF" Can anyone give me some advise? It's such a basic thing I would hope that there's just something small in the creation of the database that I've missed out. Let me know if you need more info.
I have two tables one named article and the other article_type, where the articles table have a foreign key column that references the article_type primary table named "article_status". so i change the name of the article_status foreign key to be article_status_id, but now each time i tried to delete an article type column it raised an error said the the article_status column cannot be found , although i did not mentioned that column in my code here is the full error :-
System.Data.SqlClient.SqlException was unhandled by user code Message=Invalid column name 'Article_status'. Source=.Net SqlClient Data Provider ErrorCode=-2146232060 LineNumber=1 Number=207 Procedure="" Server=\.pipeE97065CB-CF67-4B sqlquery State=1 StackTrace: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlDataReader.ConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at System.Data.Common.DbCommand.ExecuteReader() at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) at System.Data.Linq.SqlClient.SqlProvider.CompiledQuery.Execute(IProvider provider, Object[] arguments) at System.Data.Linq.CommonDataServices.DeferredSourceFactory`1.ExecuteKeyQuery(Object[] keyValues) at System.Data.Linq.CommonDataServices.DeferredSourceFactory`1.Execute(Object instance) at System.Data.Linq.CommonDataServices.DeferredSourceFactory`1.DeferredSource.GetEnumerator() at System.Data.Linq.EntitySet`1.Load() at System.Data.Linq.EntitySet`1.get_Count() at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source) at System.Data.Linq.Table`1.DeleteAllOnSubmit[TSubEntity](IEnumerable`1 entities) at ProfessionalNetworkWebApplication.Models.ProfessionalNetworkRepository.Delete(Article_Type article) in C:UsersUserdocumentsvisual studio 2010ProjectsProfessionalNetworkWebApplicationProfessionalNetworkWebApplicationModelsProfessionalNetworkRepository.cs:line 35 at ProfessionalNetworkWebApplication.Controllers.ArticleTypeController.Delete(Int32 id, String confirmButton) in C:UsersUserdocumentsvisual studio 2010ProjectsProfessionalNetworkWebApplicationProfessionalNetworkWebApplicationControllersArticleTypeController.cs:line 73 at lambda_method(Closure , ControllerBase , Object[] ) at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClassd.<InvokeActionMethodWithFilters>b__a() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) InnerException:
I'm receiving the following error occasionally when calling web service using a .NET 4.0 web application."The underlying connection was closed: An unexpected error occurred on a send."All of the articles I've read regarding this issue are for the Framework 1.1.Is there any solution to this issue for using .NET framework 4.0?
This is happening only in my system. when i do a build it just works fine but when i try to debug the service i am getting the follwoing error. please let me konw what would be theissue.
Microsoft.Practices.RecipeFramework.ActionExecutionException: An exception occurred during the binding of reference or execution of recipe DebugWCFService. Error was: Action DebugWebProject failed to execute: Value does not fall within the expected range.. You can remove the reference to this recipe through the Guidance Package Manager. ---> System.ArgumentException: Value does not fall within the expected range. at EnvDTE.Properties.Item(Object index) at Microsoft.Practices.RecipeFramework.Extensions.Actions.VisualStudio.DebugWebProjectAction.Execute() at Microsoft.Practices.RecipeFramework.Recipe.Microsoft.Practices.RecipeFramework.Services.IActionExecutionService.Execute(String actionName, Dictionary`2 inputValues) at Microsoft.Practices.RecipeFramework.Recipe.Microsoft.Practices.RecipeFramework.Services.IActionExecutionService.Execute(String actionName) at Microsoft.Practices.RecipeFramework.Recipe.Microsoft.Practices.RecipeFramework.Services.IActionCoordinationService.Run(Dictionary`2 declaredActions, XmlElement coordinationData) at Microsoft.Practices.RecipeFramework.Recipe.ExecuteActions(IDictionaryService readOnlyArguments, IDictionaryService arguments, ITypeResolutionService resolution) --- End of inner exception stack trace --- at Microsoft.Practices.RecipeFramework.Recipe.UndoExecutedActionsAndRethrow(Exception ex) at Microsoft.Practices.RecipeFramework.Recipe.ExecuteActions(IDictionaryService readOnlyArguments, IDictionaryService arguments, ITypeResolutionService resolution) at Microsoft.Practices.RecipeFramework.Recipe.Execute(Boolean allowSuspend) at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(String recipe, IAssetReference reference, IDictionary arguments) at Microsoft.Practices.RecipeFramework.GuidancePackage.Execute(IAssetReference reference) at Microsoft.Practices.RecipeFramework.RecipeReference.OnExecute() at Microsoft.Practices.RecipeFramework.AssetReference.Execute() at Microsoft.Practices.RecipeFramework.VisualStudio.RecipeMenuCommand.OnExec() at Microsoft.Practices.RecipeFramework.VisualStudio.AssetMenuCommand.Invoke()
I am trying to use the TableApapterManager.UpdateAll to insert values to master and child table. I had set the relation to cascade for update in the dataset and the HierarchicalUpdate to true. But stil when I run TableApapterManager.UpdateAll(dataset), I get a foriegn key violation error. Following is the code I used:
The error I get is "The INSERT statement conflicted with the FOREIGN KEY constraint "FK_MemPhones_Members". The conflict occurred in database "Family", table "dbo.Members", column 'i_memeberid'. The statement has been terminated."
I tried to install MVC Framework from the below [URL] First it is installing web plateform installer 2.0, once it is done, it is throwing an error Asp.net mvc2(visual studio 2008 tools) requires VS2008 Sp1 let me know what I have to install to run MVC Below is my configration: OS: Microsoft Windows Server 2003 [Enterprise edition, Service Pack 2]
I have a Framework 1.1 site that i'm moving from a server running Windows 2003 IIS 6 to Windows 2008 R2 with IIS 7. I'm getting weird errors in IE it says Internet Explorer cannot display the webpage. Chrome displays This webpage has a redirect loop. The webpage has resulted in too many redirects. It displays the .htm files fine but won't display any .aspx files. I installed the .net Framework on the server
I've just created a new MVC 2 application that references both an entity model library and a services library, and all compiles fine without running the app, but when I try running it, I get the following runtime error"
Compiler Error Message: CS0012: The type 'System.Data.Objects.DataClasses.EntityObject' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
I have double checked umteen times (e.g. Umpteen*n) and the cited assembly is refenced in all three projects. If it wasn't, WTF would I not get a build error?
I have coded my application to send mail and it works fine some of the time depending on the to or from address specified in the particular message but at other times I am getting a relay error.
"The server will not relay mail for foreign domains".
I HAVE authenticated myself to the mail server using a valid username and password in the code.Basically here is the setup. Our site is hosted overseas in the states with one company, our nameservers are also in the states but with our company not the hosting company. Our mail server is local (that is here in New Zealand). I'm pretty sure that the code is right because I've read dozens of posts on here which point to coding errors and it seems to be right.
Do I need MX records or anything like that in some place?
I have web site where web application exist in asp.net2.0 ie Framework 2.0. Now I would like Add another web application of ASP.NET3.5 FRAMEWORK. After adding assemblies of 3.5. I am getting error in ajax 1.0 code where this code is called
Error stated as CS0433: The type 'System.Web.UI.ScriptManager' exists in both 'c:WINDOWSassemblyGAC_MSILSystem.Web.Extensions1.0.61025.0__31bf3856ad364e35System.Web.Extensions.dll' and 'c:WINDOWSassemblyGAC_MSILSystem.Web.Extensions3.5.0.0__31bf3856ad364e35System.Web.Extensions.dll'
Is there any possibility that these error can be rectified from web.config or only we have to delete the assembly file from server of 1.0
