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CONSIDER ASKING EF QUESTIONS ON STACK OVERFLOW
We are seeing a lot of great Entity Framework questions (and answers) from the community on Stack Overflow. As a result, our team is going to spend more time reading and answering questions ...0 Replies | 4158 Views | Rowan Miller - Wednesday, August 01, 2012 7:57 PM
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Entity Framework 5: How to be Notified when an Object has been Materialized?
There are several times where I've needed to change (or set another non-EF property) when the underlying object is materialized. (In earlier versions of EF it was easy to do but I can't figure out how ...0 Replies | 35 Views | Tristen - 2 hours 8 minutes ago -
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long type
hi I use c# and MS SQL 2008 to create a simple application i Need to save and retrive data type "Long" from MS SQL Database using Entity ...1 Replies | 39 Views | Zorig - 9 hours 49 minutes ago | Last Reply Fernando Soto - MCSD - 7 hours 11 minutes ago -
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Error creating table with Foreign Key
I am trying to create a database and code base using Entity Frameworks's Code First method. I have a set of classes that inherit from a base class. The classes are ...2 Replies | 37 Views | Bob F Johnston - Thursday, July 04, 2013 3:51 PM | Last Reply Bob F Johnston - 8 hours 50 minutes ago -
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How do I retrieve the Primary Key when inserting a record using Linq to Entities?
Using Linq to Entities, how do I retrieve the Primary key when I insert a new record?1 Replies | 46 Views | bifrost.pro - 17 hours 6 minutes ago | Last Reply Fernando Soto - MCSD - 11 hours 30 minutes ago -
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Crud operations when using : Composition vs. Inheritance based domain models
I am trying to build a domain model for a financial application that is managing a portfolio of fixed income (bonds). I am trying to decide between the composition versus inheritance ...0 Replies | 29 Views | DoWorkAync - 12 hours 49 minutes ago -
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Code First and BindingSource
In my application I have two entities with multiple relationships. public class Post { public int Id { get; set; ...6 Replies | 222 Views | piedatt80 - Saturday, June 15, 2013 5:03 PM | Last Reply piedatt80 - 16 hours 14 minutes ago -
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How navigation properties are implemented under the hood
I want to know how navigation properties are implemented. When I try to access the property how EF detects and fires a request to DB. I am working on ORM neutral repository implementation ...1 Replies | 83 Views | A_M_H - Wednesday, July 03, 2013 3:15 AM | Last Reply Chester Hong - 21 hours 26 minutes ago -
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EntityState.Deleted is not working for me
I'm new to EF, so I would appreciate some assistance with this issue. I'm using Visual Studio 2012, MVC 4, and Entity Framework 5.0. I'm working through a sample project and the ...2 Replies | 45 Views | gdeck - Wednesday, July 03, 2013 3:19 PM | Last Reply Chester Hong - Friday, July 05, 2013 10:47 PM -
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The type or namespace name 'MyDBEntities' could not be found (are you missing a using directive or an assembly reference?)
Hi i'm new to database, EF, linq etc. Went through similar questions and didn't find answer yet. 1. i have a c# console program, builds and works ...1 Replies | 43 Views | ningji - Friday, July 05, 2013 2:25 PM | Last Reply Fernando Soto - MCSD - Friday, July 05, 2013 6:28 PM -
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Generic Repository
Hi Team, I have implemented generic repository and it is working fine till now. But I stuck at a place where i need to implement "SoftDelete" functionality at ...0 Replies | 22 Views | Gurmail Saini - Friday, July 05, 2013 5:36 PM -
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The relationship could not be changed because one or more of the foreign-key properties is non-nullable...
public class A { public int ID { get; set; } public Int32? BValueID { get; set; } [ForeignKey("BValueID")] public ...0 Replies | 20 Views | Tomasz Malik - Friday, July 05, 2013 2:45 PM -
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How to solve error: transaction operation cannot be performed because there are pending requests working on this transaction?
System.Data.SqlClient.SqlException: The transaction operation cannot be performed because there are pending requests working on this transaction. (Full error message ...0 Replies | 24 Views | rune0071 - Friday, July 05, 2013 2:04 PM -
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Unable to Query DB with EF6 Code First
Hi Guys, Ok, so I've been bashing my head against this for a couple of days now, and cannot seem to get to the bottom of the issue. I'm writing an application ...2 Replies | 61 Views | ObsidianPhoenix - Wednesday, July 03, 2013 5:02 PM | Last Reply ObsidianPhoenix - Friday, July 05, 2013 12:37 PM -
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C# DBContext Entity Framework dynamic DBSet property
Hi I am new to Entity Framework and I have created class derived from DbContext with following example. public partial class StudentdbContext : DbContext{ ...5 Replies | 118 Views | drew_p - Monday, July 01, 2013 1:33 PM | Last Reply drew_p - Friday, July 05, 2013 11:44 AM -
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Caught Exception is null
I am trying to save changes on a page to the DB using entity framework's SaveChanges() method[database first model].. and when there is an exception, the debugger in VS shows the error but the ...2 Replies | 45 Views | Kumar32 - Wednesday, July 03, 2013 3:57 PM | Last Reply Magnus (MM8) - Friday, July 05, 2013 10:41 AM -
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EF 6.0 Error 10021: Duplicated ResultMapping element encountered
This is copy of my question posted in StackOverflow ...1 Replies | 37 Views | Param Pavar - Wednesday, July 03, 2013 8:01 PM | Last Reply Chester Hong - Friday, July 05, 2013 9:35 AM -
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How to Standardize a DbSet<T>
Hello Community, I am using Entity Framework 5 DbContext API. DbSet<T>.ToList(). In my database I have multiple tables such as Resistors, Capacitors, Diodes, etc... In my C# ...2 Replies | 79 Views | MechUnit - Tuesday, July 02, 2013 9:05 PM | Last Reply Barry Wang - Friday, July 05, 2013 9:32 AM -
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Is EntityFramework.resources.dll necessary?
Hi. I'm using EntityFramework 5 in a Console application. As I build it owing to my language setting, objects made by the build include "ja" folder and ...2 Replies | 57 Views | Yamamoto-S - Wednesday, July 03, 2013 7:05 AM | Last Reply Yamamoto-S - Friday, July 05, 2013 4:09 AM -
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QueryExtender limitation?
Hi..I'm using EntityDataSource and QueryExtender to display records on my page in gridview. The problem is I'm getting error of 'col1' is not a member of type ...0 Replies | 35 Views | Shahrizal - Friday, July 05, 2013 1:55 AM -
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QueryExtender
I'm getting an error, attempting to do a very basic thing. I just want to use the QueryExtender to filter some data. Here is some markup: ...3 Replies | 3500 Views | drogers101 - Saturday, October 02, 2010 9:49 AM | Last Reply Shahrizal - Friday, July 05, 2013 1:39 AM - Items 1 to 20 of 13183 Next ›