edmx

问题 I have the following model: the i run the following to add a new user: using (var context = new CamelotDB()) { Console.WriteLine("Creating Test User"); DomainEntity userToAdd = new DomainEntity() { EntityName = "Test User", EntityType = DomainEntity.eEntityType.User, EntityCreationDate = DateTime.Now, EntityLastUpdateDate = DateTime.Now, EntityCreatorUserID = 0, Creator = context.DomainEntities.Find(0), EntityUpdaterUserID = 0, Updater = context.DomainEntities.Find(0), EntityParentID = null,

问题 when i 'generate database from model' in an edmx file it asks for a datasource and generates a sql file and adds the data source to the app.config if i choose sqlserver as the source it works fine and i can either use an existing database or create a new one and the tables get populated to it and its ready to use possible to make that sql populate a new mdf file somehow? -- -------------------------------------------------- -- Entity Designer DDL Script for SQL Server 2005, 2008, and Azure --

问题 Does EF7 support EDMX approach?.How to use EF7 to execute stored procedure?. Any suggestion is appreciable. 回答1: There is no EDMX support, but Database First Will Continue.Here you can find out more. EF 7 will support multiple result sets in the future, but at this stage there is no support for them. You can track the Stored procedure support on this GIT issue. Hope this helps to you. 回答2: EF Core, does not support EDMX, nor its preceding EF 6.x In the other hand, it already supports stored

问题 I have an issue where I have generated multiple EDMXs and models using the Entity Framework Database First approach, and these models were mapped to tables/stored procedures on a remote SQL Server 2012 instance initially. Now that we have migrated to SQL Server 2016, whenever we try to update these EDMX models by adding new tables, refreshing models, etc., the Update Wizard freezes indefinitely. I have done some research in regards to this issue, and I've seen where some people have had luck

问题 The situation as follows: we have one big MVC project with database first approach on EF5.0: ObjectContext constructor: namespace xxx.Models { (...) public partial class xxxEntities : ObjectContext { #region Constructors /// <summary> /// (...) /// </summary> public xxxEntities() : base("name=xxxEntities", "xxxEntities") { this.ContextOptions.LazyLoadingEnabled = true; OnContextCreated(); } (...) connection string: <add name="xxxEntities" connectionString="metadata=res://*/Models.xxxModel

问题 I have an EF project that containing my data model that I have been successfully using. The "Metadata Artifact Processing" option is set to "Embed in Output Assembly". As the .edmx file was in the root folder of the project the metadata string used in the EntityConnectionStringBuilder was set to: res://*/myProject.csdl|res://*/myProject.ssdl|res://*/myProject.msl When I was restructuring the project, I moved the .ecdm file into a subfolder: /DataLayer/myProject/ and I changed the metadata

问题 Its a problem While Creating Edmx in .net that on creating Edmx of DataBase only those Tables and views are added who had a primary key. This problem resolved easily but just making a column primary key in Table or View but i didn't got the actual reason why it is necessary?? Can anyone please explain the reason behind it? 回答1: Entity Framework needs a primary key to properly identify a piece of data as unique in a particular set of data. It comes down to how it looks up entities internally

问题 I have had to suddenly switch to working on Code First Entity Framework 4.1. I started off not knowing anything about this framework but in the last 8 hrs I am now much more comfortable having read blogs and articles. This blog in particular is one of the best blogs I have seen so far on the topic but the steps given do not match with my experience. In particular, I need more focus on the 3rd and 4th steps ('Create the Model' and 'Swap to DbContext Code Generation', respectively). I am unable

问题 I have a legacy database that I'd like to interact with Entity Framework. The database is highly normalised for storing information about flights. In order to make it easier to work with some of the data, a number of SQL Views have been written to flatten data and to pivot certain multi-table joins into more logical information. After quickly looking over this I see two problems with using Views in EF. The Views contains lots and lots of Keys. Some quick googling seems to indicate I will need

问题 I've inherited a C# app which uses an .rdlc file. I get an error (not a warning) in my error list: Cannot process 'reportTerminalStatus.rdlc' because it is not an EDMX file. but unlike normal code compilation errors it doesn't prevent the production of an executable file. I don't want to ignore it, but is it safe too? I've googled for information about the specific problem, but I'm not coming up with anything. I'm using VS2010 Ultimate on Windows 2008 server, and I've just run Windows Update