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  • EF6+Sqlite注意事项

    运行环境~VS2017+Win10

    1.引用SQLite相关~

    2.添加引用后,Web.config文件已经变化,修改部分地方及连接字符串~

    <provider invariantName="System.Data.SQLite" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
    <connectionStrings>
      <
    add name="MusicStoreEntities" connectionString="Data Source=|DataDirectory|MvcMusicStore.db" providerName="System.Data.SQLite.EF6" />
    </connectionStrings>

    3.编写相关实体类和连接上下文类

    //实体类例
    //同时指定 Table 特性,不指定只能使用
    SqlQuery 进行查询
    [Table("Artist")]
    public
    class Artist { public int ArtistId { get; set; } public string Name { get; set; } }
    //上下文类例
    using System.Data.Entity;
    using System.Data.Entity.Infrastructure;
    using System.Data.Entity.ModelConfiguration.Conventions;
    using System.Linq;
    using System.Web;
    
    namespace MusicStore.Models {
        public class MusicStoreEntities:DbContext {
            public MusicStoreEntities()
                : base("name=MusicStoreEntities") {
            }
        //重写该方法用于指定单数形式的表名,不重写这里的话,在实体类上指定 Table 特性
            protected override void OnModelCreating(DbModelBuilder modelBuilder) {
                base.OnModelCreating(modelBuilder);
                modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
            }
    
            public DbSet<Album> Albums { get; set; }
            //public virtual DbSet<Genre> Genres { get; set; }
            public DbSet<Genre> Genres { get; set; }
        }
    }

    对SQLite数据库的使用进行测试~

    MusicStoreEntities db = new MusicStoreEntities();
    
    //var sql = "SELECT * FROM genre";
    //var genres = db.Database.SqlQuery<Genre>(sql).ToList();
    var genres = db.Genres.ToList();
    return View(genres);

    两种查询方式均能正常返回数据。

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  • 原文地址:https://www.cnblogs.com/shocker/p/10056793.html
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