Dapper扩展之~~~Dapper.Contrib

平台之大势何人能挡？ 带着你的Net飞奔吧！http://www.cnblogs.com/dunitian/p/4822808.html#skill

上一篇文章：Dapper逆天入门~强类型，动态类型，多映射，多返回值，增删改查+存储过程+事物案例演示

 官方地址：https://github.com/StackExchange/dapper-dot-net/tree/master/Dapper.Contrib

实战案例：https://github.com/dunitian/LoTCode/tree/master/PawChina（更新ing）

注意点：Model里面的Table和Key是Dapper.Contrib.Extensions命名空间下的~~~~如果不是~~请看下篇文章（点我）

 

用法很简单，贴一下帮助类：

/// 

    /// 扩展方法
    /// 
    public abstract partial class DapperDataAsync
    {
        #region 查询系
        /// 

        /// 获取Model-Key为int类型
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static async Task GetAsync(int id, IDbTransaction transaction = null, int? commandTimeout = null) where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                return await conn.GetAsync(id, transaction, commandTimeout);
            }
        }
        /// 

        /// 获取Model-Key为long类型
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static async Task GetAsync(long id, IDbTransaction transaction = null, int? commandTimeout = null) where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                return await conn.GetAsync(id, transaction, commandTimeout);
            }
        }
        /// 

        /// 获取Model-Key为Guid类型
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static async Task GetAsync(System.Guid id, IDbTransaction transaction = null, int? commandTimeout = null) where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                return await conn.GetAsync(id, transaction, commandTimeout);
            }
        }
        /// 

        /// 获取Model-Key为string类型
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static async Task GetAsync(string id, IDbTransaction transaction = null, int? commandTimeout = null) where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                return await conn.GetAsync(id, transaction, commandTimeout);
            }
        }
        /// 

        /// 获取Model集合（没有Where条件）
        /// 
        /// 
        /// 
        public static async Task> GetAllAsync() where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                return await conn.GetAllAsync();
            }
        }
        #endregion

        #region 增删改
        /// 

        /// 插入一个Model
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static async Task InsertAsync(T model, IDbTransaction transaction = null, int? commandTimeout = null) where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                return await conn.InsertAsync(model, transaction, commandTimeout);
            }
        }

        /// 

        /// 更新一个Model
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        /// 
        public static async Task UpdateAsync(T model, IDbTransaction transaction = null, int? commandTimeout = null) where T : class, new()
        {
            using (var conn = ConnFactory.GetConnection())
            {
                bool b = await conn.UpdateAsync(model, transaction, commandTimeout);
                if (b) { return model; }
                else { return null; }
            }
        }
        #endregion

        #region 分页查询
        /// 

        /// 分页查询(为什么不用out，请参考：http://www.cnblogs.com/dunitian/p/5556909.html)
        /// 
        /// 查询语句
        /// 动态参数
        /// total语句
        /// Total动态参数
        /// 
        public static async Task PageLoadAsync(string sql, object p = null, string sqlTotal = "", object p2 = null)
        {
            var rows = await QueryAsync(sql.ToString(), p);
            var total = rows.Count();
            if (!sqlTotal.IsNullOrWhiteSpace()) { total = await ExecuteScalarAsync(sqlTotal, p2); }
            return new { rows = rows, total = total }.ObjectToJson();
        }
        #endregion
    }