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• Locking a table with a select in Entity Framework

  - by Manuel Felício

  I need to be able to do select * from myTable with (xlock,holdlock) from Entity Framework. Is this possible? I've opened a TransactionScope with the Serializable isolation level but my selects are not locking the tables. I'd like them to lock until I complete the transaction scope.

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• ASP.NET MVC project samples with entity framework

  - by Shawn Mclean

  Hello, is there any sample projects that I can download that shows alot of interaction with the entity framework and the mvc pattern of asp.net? It should have stuff such as: CRUD CRUD on child records Relationships Inheritance Thank you.

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• PHP: ORM framework or library that I can use with my database table structure

  - by Thomas

  Hi, I was using KohanaPHP ORM but I can't use it with my database table structure. So, I need a framework or library ORM to use with it. With Kohana I need to follow a naming convention. I can't use a field name (foreign key) like 'idUnidadeMedida'. Are there any suggestions? Thank you.

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• 2-Way databinding with Entity Framework and WPF DataGrid

  - by Mike Gates

  I'm having trouble adding an Entity Framework entity to a ObjectContext's EntitySet automatically using the WPF 4.0 DataGrid's add functionality. Here's the setup: DataGrid--BoundTo--ListCollectionView--BoundTo--EntitySet When I interactively add a row to the DataGrid, the EntitySet does not have a new entity added to it. Updating the row's cell data does in fact update the bound entity's properties, however. Any idea what I could be doing wrong?

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• complex type in entity framework

  - by kathy

  Hi,,, When I need to use the complex type in entity framework?? or in other words what is the complex type used for ? Thanks

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• Simple MVC Framework for ASP.net?

  - by pho3nix

  Hi, I need a simple MVC framework, without jQuery extensions, hibernate, loggers, etc.. Only Model-View-Controller functions. Anyone have an idea where I can find one?

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• Entity Framework: Generating database from classes

  - by Anonymous Coward

  Hi Everyone Is it possible to create the database from the classes with entity framework 4.0? I found many tutorials on how to do it the other way round. But since we have already implemented and tested all classes of the domain we'd like to avoid changing them to much. If I used the wrong keywords in Google I'd appreciate you could post a link. Cheers, CA

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• Using Entity Framework (code first) migrations in production

  - by devdigital

  I'm just looking into using EF migrations for our project, and in particular for performing schema changes in production between releases. I can see that generating SQL (delta) script files is an option, but is there no way of running the migrations programmatically on app start up? Will I instead need to add each delta script to the solution and write my own framework to apply them in order (from the current version to the latest) on bootstrap?

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• Asp.net mvc, entity framework, Poco - Architecture

  - by user1576228

  I have a "small" enterprise application, aspnet mvc 3 + entity framework with POCO entity and repository pattern. I structured the solution in 4 projects: POCO entities Domain model Services web application When the application performs a query on the database, use one of the services provided, the service uses the repository and the small classes, as a result I have some dynamic proxy objects that I would like to convert in my domain entities, before using them in mvc views, but I do not know how. Dovrebber be set as the translator? This approach is reasonable?

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• lightweight publish/subscribe framework in java

  - by mdma

  Is there a good lightweight framework for java that provides the publish/subscribe pattern? Some ideal features Support for generics Registration of multiple subscribers to a publisher API primarily interfaces and some useful implementations purely in-memory, persistence and transaction guarantees not required. I know about JMS but that is overkill for my need. The publish/subscribed data are the result of scans of a file system, with scan results being fed to another component for processing, which are then processed before being fed to another and so on.

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• The entity framework and database agnostic programming, possibilities?

  - by Theo

  We want to use the Entity Framework (.NET 4.0) to build applications that can deal with Sql Server, MySQL and Oracle. And maybe Sqlite too. It should be easy to switch the db vendor by some setting in a config file. Is this possible? I prefer real life examples! What kind of providers did you use?

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• Compact Framework targeting

  - by En

  If a smart device project is set to target CF 2.0, Windows CE 5.0, should this same application run on Windows Mobile 6 with CF 3.5 installed? I was able to install it (the CF 2 app), but when running received an error stating that the assemblies could not be loaded and that CF might not be installed. This has led me to belive that smart device projects wil ONLY work on the framework they target, not any versions lower or greater. Any help would be greatly appreciated.

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• default value support for Entity Framework object construction to avoid having to set this column pa

  - by Greg

  Hi, In entity framework is there a way to have a default value for a column such that Linq to Entity won't require this parameter when constructing a new object? For example I've marked on column in the EF designer with a default value (I typed in "All" as it was a string). But if I try to construct a new record and not specify this parameter I still get a FOREIGN KEY constraint exception. The INSERT statement conflicted with the FOREIGN KEY constraint "FK_FunctionalityTypeInterfaceRelationship"

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• How to delete an object by id with entity framework

  - by Jeff

  It seems to me that I have to retrieve an object before I delete it with entity framework like below var customer = context.Customers.First(c => c.Id = 1); context.DeleteObject(customer); context.Savechanges(); So I need to hit database twice. Is there a easier way? Thanks

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• Entity Framework Polymorphism

  - by Chubbs

  Hey guys, I wanted some help with trying to implement a simple polymorphic relationship using Entity Framework. An example of a relationship I would like to implement: Comment table ItemType ('Video', 'User') ItemID Body Video has many Comments User has many Comments No idea the best way to do this, I come from a Ruby on Rails way of thinking.

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• Entity Framework and Modeling Collections with an Interface as a return type

  - by William

  I am using Entity Framework v4. I have created a POCO class that contains a bunch of scalar properties and a collection that returns an Interface type. How do I create this relationship in the EF model? How do I show a collection that contains different items but they all have a common interface?

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• Convert Xaml UI to .Net Compact Framework UI

  - by Ben Crowhurst

  Is it possible to convert Xaml into a .Net Compact Framework UI (dll, exe, etc...)? In fact any XML based representation would be nice (QT, GTK, etc...).

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• WCF hosting in .NET compact framework

  - by jauwaad

  I would like to host a service on a WinCE device. The WinCE device is the host which can be accessed(control and data acquisition) by multiple clients (PC or WinCE) over serial port, TCP, USB etc. I was considering using Protocol Buffers for serialization on the wire. It would be ideal to use WCF or remoting but as far as I see they are not implement on the Compact Framework. Anyone have any ideas how this can be achieved.

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• Using Entity Framework as Data Access Layer

  - by AJM

  In my ASP.NET application I want to implement by data acess layer using the Entity framweok so I can use it as an ORM tool. But I dont want the rest of the application to care that I'm using this or be polluted by anything entity frameowrk specific. I cant seem to find anyone who is using the entity framework exclusively in their Data access layer so I'm keen to see any online examples of this/ experience people have.

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• Entity Framework 4 Visual Studio 2008

  - by Coppermill

  I'm been looking around and trying to see if the Entity Framework 4 will run under Visual Studio 2008, but can;t find any references to it. Can you get EF4 working on VS2008?

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• Concurrency checking in Entity Framework with stored procedures while deleting

  - by bodziec

  Hi, My UPDATE and DELETE logic are in stored procedures. I've built an entity framework model with mappings to these procedures. In spUpdate I return the new timestamp column so the EF could detect concurrency conflicts. It works fine. I have a problem with the spDelete because I don't see mappings for return values in the "delete function" row. How to check concurrency in this example?

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• Entity Framework foreign relationship issue

  - by Doug Hope

  I've had an entity framework model working for some time. Yesterday, it suddenly started complaining about a foreign key relationship issue during an insert. I've checked the fields and can do a manual insert using the exact field values. But the EF continues to complain. Any ideas what could have happened?

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• SqlMetal alternative for .NET Compact Framework 2.0

  - by mack369

  Is there any way to generate database models from existing database (sdf file) for .NET Compact Framework 2.0? Since it doesn't support LINQ I cannot use SqlMetal. I'm looking for free for commercial use tool.

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• Get data on the basis of conditions in entity framework 3.5 with include

  - by Ashwani K

  Hello All: I am using entity framework 3.5 for my application. I want load data based on some condition e.g. var data = from e in context.Employee.Include("Employee.Projects") where e.IsActive select e; Using this, I will get all the Employees which are active with their project details. But I want to load only those projects which are active. So, how to load only active projects using the query? Thanks Ashwani

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• Can Entity Framework model be passed a SQL script to be run against the database

  - by Greg

  Is it possible to pass a SQL script to some method that Entity Framework has to run it against my model? e.g. equivalent of: context.ExecuteStoreCommand(<tsql script path>); Background: I want a way to reset the database during unit tests, and making a call to run the EF generated TSQL script (from Generate Database from Model) seems one way to achieve this.

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