edmx

Provider connection string from Entity Framework

由 痴心易碎 提交于 2019-11-28 09:03:51
If you are using object contex data model (with EDMX file), during its creation you might want to specify the connection string inside your config file. The connection string is unfortunately not the common connection string as it contains some ...things needed for the entity connections. Example with MySql connection: <add name="MyDbEntities" connectionString="metadata=res://*/Namespace.MyDb.csdl|res://*/Namespace.MyDb.ssdl|res://*/Namespace.MyDb.msl;provider=MySql.Data.MySqlClient;provider connection string="server=172.17.17.154;User Id=user;password=password;Persist Security Info=True

How can I make the Entity data model designer use my database column descriptions?

由 徘徊边缘 提交于 2019-11-28 09:01:23
I am using EF4 with Visual Studio 2010. I have a SQL database already created and all my columns are documented with the Description property in SQL management studio. When I create the edmx in Visual Studio, how can I make it read those descriptions and use them to add comments to my generated classes? I know I can use the Summary and LongDescription in the edmx properties but I'm looking for a way to do this without having to copy and paste every description. Thanks! There is a feature request for this. Feel free to add your votes to help make this available in the future: Retrieve the SQL

Tool to convert Entity Framework EDMX to Code First

由 一笑奈何 提交于 2019-11-28 07:14:08
Is there a tool to convert an edmx into code-first? I know there was talk of one appearing in a CTP a while back, but I can't find any updates relating to this. There's a guy on the MSDN forums who has written his own (not available yet), but nothing from the EF team. There is no such tool because EDMX offers much more features which cannot be translated into code-first. The only tool available are EF Power Tools CTP1 which allow creating code-first mapping from existing database but it will only create 1:1 image of your database = naming based on database, no inheritance, no splitting, etc.

Get Tables and Relationships

由 蹲街弑〆低调 提交于 2019-11-28 06:33:25
问题 Is there a way to get a list of tables and relationships from an EDMX using the MetadataLoader? 回答1: Try this: MetadataWorkspace metadataWorkspace = null; bool allMetadataLoaded = loader.TryLoadAllMetadata(inputFile, out metadataWorkspace); StoreItemCollection itemCollection = (StoreItemCollection)metadataWorkspace.GetItemCollection(DataSpace.SSpace); // Tables foreach (var entity in itemCollection.GetItems<EntityType>()) { ... } // Relations foreach (var association in itemCollection

How to create a computed property in Data Services (OData)?

由 微笑、不失礼 提交于 2019-11-27 18:28:06
问题 I am creating an OData service with WCF Data Services using an EDMX. How can I create a computed property for an entity type, so that its value gets computed in the service (C#) and does not come from the database? The value of this property is based on the value of other properties, which are mapped to fields in the database. 回答1: If you are exposing your EDMX file directly, using the default Entity Framework Provider for Data Services, something like this: public class MyService:

No Entity Data Model (EDMX) Template with Visual Studio 2010 SP1 & ADO.NET Entity Framework 4.1

由 空扰寡人 提交于 2019-11-27 11:40:32
I'm having a lot of issues with the templates of Visual Studio 2010 SP1 & ADO.NET Entity Framework 4.1 I noticed that other people had these problems, and asked similar questions, but I don't think they gave enough information to make it solve-able. The Problem: ADO.NET Entity Data Model Templates are not appearing whatsoever Screenshot: http://c0848462.cdn.cloudfiles.rackspacecloud.com/f067439f6e8f25d5fd36761fd1efc88a74fd765ff1.png Solution File Microsoft Visual Studio Solution File, Format Version 11.00 # Visual Studio 2010 Project("{E24C65DC-7377-472B-9ABA-BC803B73C61A}") = "localhost",

Enum Support for Entity Framework Database First

由 余生长醉 提交于 2019-11-27 06:39:37
问题 I can find a bunch of tutorials on how to implement enum support for model first and code first like these: http://msdn.microsoft.com/en-us/data/jj248772.aspx http://msdn.microsoft.com/en-us/data/hh859576.aspx Can anyone explain to me or provide me with some instructions on how to properly implement enum support for database first applications. I'd imagine I'd have to start in the edmx designer and right click one of my columns in the tables and convert to enum? Thanks for any advice. I'm

Entity Framework Merge Nightmare

由 落爺英雄遲暮 提交于 2019-11-27 04:16:42
问题 We've adopted the Entity Framework and we're finding that when multiple people make isolated changes in their individual source control branches, there are massive conflicts when they come together in a merge, resulting in broken model files. We're leaning in the direction of forcing exclusive check outs on the file, but I'd like to avoid that. My question is... Is there a better compare tool that would handle this better, or is there another approach we could take? Looking for something that

How do you update an edmx file with database changes?

由 依然范特西╮ 提交于 2019-11-27 02:52:42
I have an edmx file and I changed a table in my database. I know that there is an "Update Model from database" wizard, however in many cases this is useless. For example if I change a field from non null to nullable or if I remove fields the update model does not reflect the changes. I have had to remove the entity and add it back in to get the changes to appear in my model. Per the following question: How do I propagate database changes to my .edmx file? One of the answers seems to say the same thing, that you need to remove the entity and add it back in. Is this the definitive answer or is

Provider connection string from Entity Framework

由 ◇◆丶佛笑我妖孽 提交于 2019-11-27 02:42:27
问题 If you are using object contex data model (with EDMX file), during its creation you might want to specify the connection string inside your config file. The connection string is unfortunately not the common connection string as it contains some ...things needed for the entity connections. Example with MySql connection: <add name="MyDbEntities" connectionString="metadata=res://*/Namespace.MyDb.csdl|res://*/Namespace.MyDb.ssdl|res://*/Namespace.MyDb.msl;provider=MySql.Data.MySqlClient;provider
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