Use EF Code First + Mysql

This two-day all right, even after all the previous research EF mssql Microsoft's own son, replaced by mysql one hundred issues, following the record about how to use EF code first + mysql database;

Project, nuget first introduced EF extension;

 

 

If the local EF has expanded, you can use the package management console installed, the command is as follows.

PM> Install-Package EntityFramework -Version 6.0.0

 

Then nuget MySql.Data.Entity install this extension is to support EF's mysql

 

 

 

 

I am here to introduce the latest version is 6.10.9;

After the introduction of extended, VS will automatically generate the app.config profile;

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <entityFramework>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.10.9.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d">
      </provider>
    </providers>
  </entityFramework>

  <! - under the new connection string -> 

  < connectionStrings >

    <add name="DataAccess" connectionString="Datasource=127.0.0.1;port=3306;Database=zyturo;uid=root;pwd=fubing;" providerName="MySql.Data.MySqlClient" />
  </connectionStrings>
</configuration>

 

Link configuration strings;

 <connectionStrings>
    <add name="DataAccess" connectionString="Datasource=127.0.0.1;port=3306;Database=zyturo;uid=root;pwd=fubing;" providerName="MySql.Data.MySqlClient" />
  </connectionStrings>

Creating a database and mapping the relationship between the entity classes

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ZY.Tour.EntityFramework
{
    public class TB_Admin
    {
        /// <summary>
        /// 管理员ID
        /// </summary>
        [Key]
        public Int32 Admin_ID { get; set; }
        /// <summary>
        /// 管理员登录账号
        /// </ Summary> 
        [the Required]
         public  String the Account { GET ; SET ;}
         ///  <Summary> 
        /// administrator password
         ///  </ Summary> 
        [the Required] 

        public  String Password { GET ; SET ;}
         // /  <Summary> 
        /// encryption salts
         ///  </ Summary> 
        [the Required] 

        public  String salt { GET ; SET ;}
         ///  <Summary> 
        /// creation time
        ///  </ Summary> 
        public Nullable <the DateTime> {CreateTime GET ; SET ;}
         ///  <Summary> 
        /// help registrant ID
         ///  </ Summary> 
        public Int32 ParentID { GET ; SET ;}
         / //  <the Summary> 
        /// last login IP
         ///  </ the Summary> 
        public  String LastLoginIP { GET ; the SET ;} 

        ///  <the Summary> 
        /// administrator's department ID
         ///  </ the Summary> 
        public Int32 department_ID {get; set; }
    }
}

 

Add the characteristics of the entity class attributes ( the Attribute) can refer to this particular description Park Friends of the article:  https://www.cnblogs.com/dotnet261010/p/9111954.html

[Key] represents the primary key, he is automatically incremented from zero;

[The Required] expressed can not be empty 

 

Need to use additional features like tagging, you can see which properties are defined under System.ComponentModel.DataAnnotations namespace in the Object Browser;

 

 

 

Here is a DataAccess class I created for the operation of the database;

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ZY.Tour.EntityFramework
{
    [DbConfigurationType(typeof(MySql.Data.Entity.MySqlEFConfiguration))]
    public class DataAccess : DbContext
    {
        public DataAccess() : base("name=DataAccess")
        {
        }
        public virtual DbSet<TB_Admin> Admin { get; set; }
    }
}

[DbConfigurationType (typeof (MySql.Data.Entity.MySqlEFConfiguration))]
 on DbContent class adds an annotation, to declare the data type of living become mysql;

At this point you can normally use, I set up a single member of the test items, test by;

 public void TestMethod1()
        {
            var da = new DataAccess();
            da.Admin.Add(new TB_Admin
            {
                Account = "fubing",
                CreateTime = DateTime.Now,
                Password = "123123",
                Salt = "123123"
            });
            da.SaveChanges();
            Assert.IsTrue(true);
        }

The database is created automatically and create the table and data;

 

 

 

Well, the record is completed;