关于EF6用于SQlite的总结

关于Sqlite采用EF6操作的问题折腾里一整天，现在总结一下。

1、首先使用Nuget安装sqlite。安装成功后如图所示：

 

2、改配置文件 安装后，你会发现在app.config中，添加关于sqlite的配置。

<?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>

  <connectionStrings>
    <!--添加连接字符串，注意后面的路径用全路径-->
    <add name="SqliteTest" providerName="System.Data.SQLite.EF6" connectionString="Data Source=|DataDirectory|\education.db;Pooling=True;BinaryGuid=False" />
  </connectionStrings>

  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <!--在EntityFramework节点的providers子节点添加配置-->
      <provider invariantName="System.Data.SQLite" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
      <provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
    </providers>
  </entityFramework>
  <system.data>
    <DbProviderFactories>
    

      <remove invariant="System.Data.SQLite.EF6" />
      <add name="SQLite Data Provider (Entity Framework 6)" invariant="System.Data.SQLite.EF6" description=".NET Framework Data Provider for SQLite (Entity Framework 6)" type="System.Data.SQLite.EF6.SQLiteProviderFactory, System.Data.SQLite.EF6" />
    <remove invariant="System.Data.SQLite" />
      <!--在system.data节点的DbProviderFactories子节点配置如下-->
      <add name="SQLite Data Provider" invariant="System.Data.SQLite" description=".NET Framework Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite" />
    </DbProviderFactories>
  </system.data>
</configuration>

3、创建实体类

    [Table("Persons")]//注意Table标签
    public class Person
    {
        [Key]
        public Guid Id { set; get; }
        public string Name { set; get; }
    }

4、创建一个类继承自DbContext，以后通过它访问数据库

    public class SQliteDbContext:DbContext
    {
        public SQliteDbContext()
            : base("SqliteTest")
        {
        }
        public DbSet<Person> Persons { set; get; }

    }

5、调用

        static void Main(string[] args)
        {
            using (var context = new SQliteDbContext())
            {
                //foreach (var item in context.Persons)
                //{
                //    Console.WriteLine(item.Id);
                //}
                var tt = context.Persons.Find(new Guid("00114a15-aceb-4b92-b9f6-cc5df509c4d5"));
                Console.WriteLine(tt.Id);

                //for (int i = 0; i < 10000; i++)
                //{
                //    context.Persons.Add(new Person { Id = Guid.NewGuid(), Name = "kkk" });
                //}
                context.SaveChanges();
            }
            Console.ReadKey();
        }