随笔分类 - LINQ
摘要：demo 条件：两个数据库的数据不能重复 try { int warehouseId = request.Model.WarehouseID; using (var dbSession = dbConnection.GetConnection(warehouseId)) { string click
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摘要：string CountDates = string.Join(",", listinsData.Select(_ => _.CountDate.ToString("yyyy-MM-dd")).Distinct().ToArray()); CountDates = string.Format("'{
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摘要：public class MemberInventoryDailyReportPOComparer : IEqualityComparer<MemberInventoryDailyReportPO> { public bool Equals(MemberInventoryDailyReportPO
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摘要：1.在后台用C#处理，在后台处理，不要在elementUI（前端）处理。 public DateTime BeginTime { get; set; } public DateTime? EndTime { get; set; } //格式化日期为yyyy-MM-dd HH:mm:ss var da
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摘要：var data = from b in body join m in member on b.MemberID equals m.MemberID into um from m in um.DefaultIfEmpty() join w in warehouse on b.WarehouseID
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摘要：LINQ查询语法： into：可以使用 into 上下文关键字创建一个临时标识符，以便将 group、join 或 select 子句的结果存储到新的标识符中。 var data = new List<WarehousestorageSM>(); data = (from m in storageL
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摘要：对获取的数据进行封装 public PDA_ResponseBase_DTO_OP<List<PDA_PickPacage_LO_OP>> GetPackageVali(PDA_PickPacage_DTO_IP model) { PDA_ResponseBase_DTO_OP<List<PDA_P
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