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Search found 139 results on 6 pages for 'dbml'.

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• Circular reference error when outputting LINQ to SQL entities with relationships as JSON in an ASP.N

  - by roosteronacid

  Here's a design-view screenshot of my dbml-file. The relationships are auto-generated by foreign keys on the tables. When I try to serialize a query-result into JSON I get a circular reference error..: public ActionResult Index() { return Json(new DataContext().Ingredients.Select(i => i)); } But if I create my own collection of…

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• How to handle encrypted column in SQL Server Database in LINQ to SQL?

  - by Raja

  Hi Guys, We are in the process of encrypting all the SSN columns (had to do it now due to security audit). We already built the DBML and now we have to change it. Can you guys let me know if there is a good way of handling this in LINQ to SQL? We use stored procedures for Insert, Update and Delete but use LINQ to SQL for all our selects…

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• SQL Server CE, Visual Studio 2008/2010 RC, and Linq-to-Sql

  - by blu

  I added an .sdf to my project, added a table, added a Linq-to-Sql dmbl, and tried to add the table to the dbml. The result was an error: "The selected object(s) are an unsupported data provider" This happens in both VS 2008 Professional SP1 and 2010 RC Ultimate. I found someone talking about using SQL Metal to generate the…

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• Is there a suggested solution structure for ASP.NET MVC Production Apps

  - by Eoin Campbell

  In general, I don't like to keep code (BaseClasses or DataAccess Code) in the App_Code directory of an ASP.NET Site. I'll usually pull this stuff out into a MySite.BusinessLogic & MySite.DataAccess DLL's respectively. I'm wondering should I be doing the same for ASP.NET MVC. Would it be better to Organise the solution…

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• exception with Linq to SQL using sdf file

  - by Ben

  Hi, I've set up a project with an SDF local database file and am trying to access it using an LINQ To SQL (".dbml") file. I have used the connection string provided by the sdf file and can instanciate the object with out a problem: thisDataContext = new MyDataContext(GetConnectionString()); However, whenever i try to…

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• Creating a new record using AJAX in ASP.NET-MVC

  - by RememberME

  I am having the hardest time wrapping my head around this. I recently asked this question Create/Edit/Save data in a jQuery pop-up for ASP.NET-MVC and Linq2Sql I'm sure that the response is the right way to go, but I just can't figure out how to write the back-end code to make it work. I originally made my site by…

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• Linq2SQL using Update StoredProcedure

  - by PeterTheNiceGuy

  We use queries generated by Linq for data retrieval but for INSERT and UPDATE we do not allow generated SQL, but restrict to the use of stored procedures. I connected the Update and the Insert behaviour in the DBML to the stored procedures. The procedures are called, the data gets inserted/updated = all if fine,…

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• LinqDataSource wizard table list is not refreshing after updating LinqToSql classes

  - by dotnet_learner

  I have changed my dbml file like this. I have deleted all the tables and stored procs. I added new tables and stored procs from a new database. In the code-behind, I can access the new tables and stored procs. However, in the LinqDataSource using the same dbContext when I'm trying to configure the…

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• Linq sql Attach, Update Check set to Never, but still Concurrency conflicts

  - by remdao

  In the dbml designer I've set Update Check to Never on all properties. But i still get an exception when doing Attach: "An attempt has been made to Attach or Add an entity that is not new, perhaps having been loaded from another DataContext. This is not supported." This approach seems to have worked…

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• Will this safely delete my record?

  - by Sergio Tapia

  I hate these three tables that. Two tables have a many to many relationship and as such it generates a third table. I'm using Linq-to-SQL and in the .dbml file I've dragged all the folder there to the graphic surface. Here is the method I'm using to delete an Area safely. Remember that documents…

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• troubles with generated constructor in linq2sql

  - by zerkms

  After adding one more table to linq2sql .dbml schema i got Value cannot be null. Parameter name: mapping Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the…

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• Can't Add LINQ to SQL classes to projects in VS2010

  - by MisterJames

  I just ran into something in Visual Studio 2010 RC that wasn't previously happening (like, yesterday). No software changes here, but I did run into some muck yesterday when compiling that required a reboot. I am unable to add LINQ to SQL classes to any project through the add dialog. I have…

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• GetRolesForUser tries to get Roles on old username?

  - by Xaisoft

  I have a section on a page where a user can change their username. This is basically the code for that: user.UserName = txtNewUserName.Text; user.Save(); user is a class in my dbml and Save calls SubmitChanges on the data context. The name is changed in the database, so when it calls the…

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• Is testability alone justification for dependency injection?

  - by fearofawhackplanet

  The advantages of DI, as far as I am aware, are: Reduced Dependencies More Reusable Code More Testable Code More Readable Code Say I have a repository, OrderRepository, which acts as a repository for an Order object generated through a Linq to Sql dbml. I can't make my orders repository…

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• Is it safe to convert varchar and char into nvarchar and nchar in SQL Server?

  - by Svish

  We currently have a number of columns in the database which are of type varchar. The application that uses them are in C# and it uses Linq2Sql for the communication (or what to call it). We would like to support unicode characters, which means we would have to convert the varchar columns…

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• LINQ to SQL stored procedures with multiple results in Visual Studio 2008

  - by Jeremy

  I'm using visual studio 2008 and I've created a stored procedure that selects back two different result sets. I drag the stored proc on to a linq to sql dbml datacontext class, causing visual studio to create the following code in the cs file: [Function(Name="dbo.List_MultiSelect")]…

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• "Cleanly" Deploying an ASP.NET Application with LINQ to SQL Server

  - by Bob Kaufman

  In my development environment, my SQL Server is PHILIP\SQLEXPRESS. In testing, it's ANNIE, and the live environment will have a third name yet to be determined. I would have assumed that updating the following statement in web.config would have been enough: <add…

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• Why Could Linq to Sql Submit Changes Fail for Updates Despite Data in Change Set

  - by KevDog

  I'm updating a set of objects, but the update fails on a SqlException that says "Incorrect Syntax near 'Where'". So I crack open SqlProfiler, and here is the generated SQL: exec sp_executesql N'UPDATE [dbo].[Addresses] SET WHERE ([AddressID] = @p0) AND…

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• Linq issue retrieving single value from mssql

  - by Anicho

  Hey Guys, having an issue with linq, I am basically doing the following but it is saying it is "UserProfile does not contain definition for Username" in the current context where I wrote "u.Username" but it does exist I have added UserProfile table to…

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• LINQ - Linq to Sql - Specified cast is not valid - Please Help!

  - by thiag0

  I am trying to do the following... Request request = ( from r in db.Requests where r.Status == "Processing" && r.Locked == false select r).SingleOrDefault(); It is throwing the following exception... Message: Specified…

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• InvalidOperationException sequence contains more than one element even when only one element

  - by user310256

  I have three tables, tblCompany table, tblParts table and a link table between them tblLinkCompanyParts. Since tblLinkCompanyParts is a link table so the columns that it has are LinkCompanyPartID(primary key), CompanyID from tblCompany table and…

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• VS 2010 Entity Repository Error Class member EntityBase.id is unmapped.

  - by Steve

  In my project I have it set up so that all the tables in the DB has the property "id" and then I have the entity objects inherit from the EntityBase class using a repository pattern. I then set the inheritance modifier for "id" property in the…

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• Losing scope for DataContex using LINQToSQL intermediately

  - by greektreat

  I am having a weird Situation with my DataConext. All My code is in C# I have a DLL project for my data access layer and business Layer which and Winforms project for my UI layer. My Data access Layer's Namespace is xxx.Data this is where…

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• Using Linq to SQL change events with attribute-based mapping

  - by R Mene

  I'm writing a new ASP.NET MVC2 application using Linq to SQL. This application depends on an existing SQL database. I am using attribute-based mapping to map my database fields to my Linq to SQL entities. I also need to make use of Linq…

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• VS 2010 Entity Repository Error

  - by Steve

  In my project I have it set up so that all the tables in the DB has the property "id" and then I have the entity objects inherit from the EntityBase class using a repository pattern. I then set the inheritance modifier for "id" property…

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