ef-database-first

问题 I recently updated my project from Database First to a Code First Model, using this method: Link Everything seemed to be working until I wanted to update my FK and PKs on an existing table. This was a 1-0, 1-1 relationship. So the PK of Company table was the FK and PK of the DriverScorecardSetting table. So this is the entity that the Tool generated for the DriverScorecardSetting table. [Table("DriverScorecardSetting")] public partial class DriverScorecardSetting { [Key] [DatabaseGenerated

问题 I recently updated my project from Database First to a Code First Model, using this method: Link Everything seemed to be working until I wanted to update my FK and PKs on an existing table. This was a 1-0, 1-1 relationship. So the PK of Company table was the FK and PK of the DriverScorecardSetting table. So this is the entity that the Tool generated for the DriverScorecardSetting table. [Table("DriverScorecardSetting")] public partial class DriverScorecardSetting { [Key] [DatabaseGenerated

问题 what i am trying to do is exclude few column from EF store and EF modal. for reference there are two method : https://stackoverflow.com/a/40742144/4998968 but i want to exclude column when edmx file is created i.e when i connect my database using Ado.net Data modal option i want few columns to be excluded from edmx as if they don't exists in database. currently i am exploring the entity framework source code but cannot find the exact code that generates .edmx file and store. example: suppose

问题 We need an option to set the ProviderManifestToken in code for a Database First Model in order to override the value from the EDMX, which defaults to "2012" for SQL Server 2012 in our particular case. What we've tried so far: As described in this post we decorated our context class with the DbConfigurationType attribute, our derived class looks exactly the same as in that post. internal sealed class MyDbConfiguration : DbConfiguration { public MyDbConfiguration() { //this

问题 I have a project which has an existing database structure and data. Currently project is running on PHP + MySQL and I'm trying to switch from PHP to C# EF 6.0 + MySQL Database first approach. I have installed NuGet Packages (EF 6.0 and MySQL.Data, MySQL.Web, MySQL.Data.Entity, MySQL.Data.Entities) and modified my app.config according to use MySQL data provider. Up to this state everything works perfectly, I can generate model from database and can insert data on each table without any issue

问题 I have a around 50 databases that have 150 tables each and working on a search mechanism that would allow to query the tables that have specific columns. Most database structures are same so idea is to generate EF entities and put interfaces behind the entities generated if tables that they are being generated from have specific columns, so that I could later query then on that column. Model will likely be constantly changing so I can't manually add interfaces on tables - here come in T4

问题 That's my basic ( Database First ) diagram on SQL Server : When I Update Model from Database using Entity Framework (6.x) within my MVC application, I expect Users got this property: public virtual ICollection<Role> Roles { get; set; } As well Roles with: public virtual ICollection<User> Users { get; set; } But instead I got: public virtual ICollection<UsersRoles> UsersRoles { get; set; } public virtual ICollection<UsersRoles> UsersRoles { get; set; } Where am I wrong? 回答1: Your design is

问题 I have an auto-generated Entity Framework model. It was generated using a database first approach. The mid_initial column has a database defined constraint that limits the column to a maximum length of 3 characters. //------------------------------------------------------------------------------ // <auto-generated> // This code was generated from a template. // // Manual changes to this file may cause unexpected behavior in your application. // Manual changes to this file will be overwritten

问题 How to use Repository pattern using Database first approach in entity framework.I got some idea while going through resources available on internet but for real time applications I am not sure how to implement repository pattern on the auto generated classes from the DB first approach. I have already gone through some links in SO but I did not get any clear idea.I am new to this one. Thanks in Advance. 回答1: The code generation tool will only modify the classes that are mapped to the XML files

问题 EDIT - as requested, this is the view... --start edit @model salesWebTest.viewModel.vwbooking @using (Html.BeginForm()) { @Html.AntiForgeryToken() @Html.ValidationSummary(true) @Html.HiddenFor(model => model.bookings.bookingid) @Html.EditorFor(model => model.bookings.name) @foreach (var item in Model.traces) { @Html.EditorFor(m => item.contact_Name) } } --end edit --start original question I have a viewModel that contains two classes... public class vwbooking { public booking bookings { get;