学步园

//自动根据Linq实体创建库和表

 public static class CreatDataTable
    {
        private static string dbConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["AdvertisementDatabaseConnectionString"].ConnectionString;

        public static void CheckDataTableIsExists()
        {
            DBDataContext db = new DBDataContext(dbConnectionString);
            if (db.DatabaseExists() == false)
            {
                db.CreateDatabase();  
            }

            CreateTables();            
        }

        /// <summary>
        /// 创建单个表
        /// </summary>
        /// <param name="linqTableClass"></param>
        public static void CreateTable(Type linqTableClass)
        {
            using (var tempDc = new DBDataContext(dbConnectionString))
            {
                var metaTable = tempDc.Mapping.GetTable(linqTableClass);
                //反射的方法创建对象
                var typeName = "System.Data.Linq.SqlClient.SqlBuilder";                
                var type = typeof(DataContext).Assembly.GetType(typeName);

                //反射调用私有的GetCreateTableCommand 方法。
                var bf = BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.InvokeMethod;                
                var sql = type.InvokeMember("GetCreateTableCommand", bf, null, null, new[] { metaTable });

                var sqlAsString = sql.ToString();
                tempDc.ExecuteCommand(sqlAsString);
            }
        }
        /// <summary>
        /// 创建所有的表,如果已存在则不会再创建
        /// </summary>
        public static void CreateTables( )
        {
            using (var tempDc = new DBDataContext(dbConnectionString))
            {
                var tables = tempDc.Mapping.GetTables();
                foreach (var metaTable in tables)
                {
                    try
                    {
                        //var metaTable = tempDc.Mapping.GetTable(linqTableClass);
                        //反射的方法创建对象
                        var typeName = "System.Data.Linq.SqlClient.SqlBuilder";
                        var type = typeof(DataContext).Assembly.GetType(typeName);

                        //反射调用私有的GetCreateTableCommand 方法。
                        var bf = BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.InvokeMethod;
                        var sql = type.InvokeMember("GetCreateTableCommand", bf, null, null, new[] { metaTable });

                        var sqlAsString = sql.ToString();
                        tempDc.ExecuteCommand(sqlAsString);
                    }
                    catch (SqlException sqlex)
                    {
                        if (sqlex.Number == 2714)
                        {
                            //这个表已存在,不需要再创建
                        }
                        else
                        {
                            throw;
                        }
                    }
                   
                }
            }
        }

    }

自动根据Linq实体创建库和表

当然应该放在应用程序启动的时候或者iis启动的时候只执行一次。。