https://github.com/StackExchange/Dapper

?dapper in 查詢

string sql = "SELECT * FROM SomeTable WHERE id IN @ids" var results = conn.Query(sql, new { ids = new[] { 1, 2, 3, 4, 5 });

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dapper 寫查詢sql 時，多條件參數操作方法

var args = new DynamicParameters(new {});if (obj.orderId != null){sb.Append(" AND OrderId = @OrderId");args.Add("OrderId", obj.orderId);}if (obj.clientName != null){sb.Append(" AND b.Name = @ClientName");args.Add("ClientName", obj.clientName); } conn.Query<TModel>(sql, args ); var args = new DynamicParameters(new {}); parameters.ForEach(p => args.Add(p.ParameterName, p.Value)); conn.Query<TModel>(sql, args );

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QueryMultiple執行多個查詢

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string sql = @"select top 1 * from Order WITH (NOLOCK) where Disabled=0 and OrderId=@OrderId;SELECT d.*, b.ActualAmount from Details d WITH (NOLOCK) LEFT JOIN BarCode b WITH (NOLOCK) ON d.OrderDetailsId = b.OrderDetailsId AND b.Disabled = 0 where d.Disabled=0 AND d.OrderId=@OrderId;";var parameter = new{OrderId = orderId};using (var multi = Connection.QueryMultiple(sql, parameter)){var order = multi.ReadFirstOrDefault<ModelOrder>();if (order != null){order.Details = multi.Read<ModelOrderDetail>() as ICollection<ModelOrderDetail>;}return order;}

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縮寫詞：

POCO's (plain old CLR objects)

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apper--.NET(C#)的一款高性能ORM組件

http://2sharings.com/2014/dapper-net-orm-introduction

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DapperExtensions的地址：?https://github.com/tmsmith/Dapper-Extensions

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轉載于:https://www.cnblogs.com/shy1766IT/p/6500827.html

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