关于 Sqlite 的  CodeFirst

Model

using SqlSugar;

using System;

using System.Collections.Generic;

using System.Text;

namespace TimeManagement.Model

{

    public class MainTask

    {

        /// <summary>

        /// 主键

        /// </summary>

        [SugarColumn(IsNullable = false, IsPrimaryKey = true, IsIdentity = true, Length = 36)]

        public string IDINFO { get; set; }

        /// <summary>

        /// 任务ID

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 36)]

        public string TaskID { get; set; }

        /// <summary>

        /// 任务名称

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 50)]

        public string TaskName { get; set; }

        /// <summary>

        /// 標籤

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 50)]

        public string TagInfo { get; set; }

        /// <summary>

        /// Cron表達式

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 50)]

        public string Cron { get; set; }

        /// <summary>

        /// 執行方式 0:Get ;1:Post 默認為0

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 2, DefaultValue = "0")]

        public int ModeOfExecution { get; set; }

        /// <summary>

        /// 狀態 0:關閉 ; 1:開啟 默認0

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 1, DefaultValue = "0")]

        public int StatusInfo { get; set; }

        /// <summary>

        /// 超時時間 0:永不超時

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 11)]

        public int TimeOutPeriod { get; set; }

        /// <summary>

        /// 失敗重試次數

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 11, DefaultValue = "0")]

        public int NumberOfFailedRetries { get; set; }

        /// <summary>

        /// 失敗重試間隔時間

        /// </summary>

        [SugarColumn(IsNullable = false, Length = 11, DefaultValue = "0")]

        public int FailedRetryInterval { get; set; }

    }

}

对应的DbContext

 public static SqlSugarClient DbAsync

        {

            get

            {

                string connectionString = "Data Source=Time_Management_DbInfo.db";

                return new SqlSugarClient(new ConnectionConfig()

                {

                    ConnectionString = connectionString,

                    DbType = DbType.Sqlite,

                    IsAutoCloseConnection = true,

                    IsShardSameThread = false,

                    InitKeyType = InitKeyType.Attribute

                });

            }

        }

对应的测试

[TestClass]

    public class BaseTest

    {

        [TestMethod]

        public void GenerateDatabase()

        {

            DbContext.DbAsync.CodeFirst.BackupTable().InitTables<MainTask>();

        }

    }

报错

Test method TimeManagement.Test.BaseTest.GenerateDatabase threw exception: 

    SqlSugar.SqlSugarException: SQLite Error 1: 'AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY'.

疑问

这里说是int主键 , 但是我检查了好几次都是string  , 并且string指定了长度 36 , 主键我也很确定只有一个 , 为什么生成还是报错呢? 后来我把主见修改为 int 且 不指定长度了 .  但是又报错 :

 Test method TimeManagement.Test.BaseTest.GenerateDatabase threw exception: 

    SqlSugar.SqlSugarException: Specified method is not supported.

请问是什么原因? 特别是第二个报错 , 莫名奇妙 ????