WebJun 27, 2008 · There is no standard functionality in the DataTable itself to do this. If you can use LINQ, then the groupby clause will do the aggregation for you. Otherwise, you will have to sort the DataTable on the Id column, and then loop through the rows adding the Value column until the Id changes, and then WebMay 13, 2013 · The following code works on each IGrouping in the select portion to get your aggregate operations working correctly. var results = from line in Lines group line by line.ProductCode into g select new ResultLine { ProductName = g.First ().Name, Price = g.Sum (pc => pc.Price).ToString (), Quantity = g.Count ().ToString (), }; Share
.net - GroupBy and Sum on a DataTable - Stack Overflow
Web我正在努力使LINQ Group By成為我的大腦,並且在我的知識上有一個小缺陷。 我想按多個列進行分組,這些列我知道可以對new 和某些字段進行處理。 唯一的問題是,基於某些查詢字符串值,我可能會或可能不想將它們包括在內。 我有這個: 我可能希望我的匿名對象僅具有第一個字段,或最后兩個字段 ... WebOct 13, 2016 · You can group by Supplier and Product as. var result = from x in data group x by new { x.Supplier, x.Product } select x; or. var result = data.GroupBy(x => new { x.Supplier, x.Product }); similarly you can use any number of property in group clause can you sell a house with a home equity loan
How group by and sum values in DataTable? - C# / C Sharp
WebC# 字典分组和总和原因已添加具有相同键的项,c#,linq,.net-core,group-by,C#,Linq,.net Core,Group By,我有一个场景,如果满足特定的布尔值(office\u debit\u totalline),我可以直接从列中获取金额,否则我需要通过对一些特定值进行分组来计算,代码如下: var result = products.Select(p => new ResponseDto() { customer_id = p ... WebJul 18, 2024 · var Temp_DT = tempdt.AsEnumerable ().Select (x => new { UID = x.Field ("UID"), EMPNAME = x.Field ("Emp Name"), EMPROLE = x.Field ("Role"), SUPID = x.Field ("Sup ID"), SUPNAME = x.Field ("Sup Name"), DESIGNATION = x.Field ("Designation"), VOLUME = x.Field ("Volume"), LOGINTIME = x.Field ("Login Time"), BREAKTIME = … WebMay 20, 2016 · Assuming you have DataTable with the mentioned data, you could do this using Linq var result = table.AsEnumerable () .GroupBy (x=> x.Field ("Currency")) .Select (x=> new { Currency = x.Key, Value = x.Sum (s=> Math.Max (s.Field ("FeesNormal"), s.Field ("FeesCustom "))), } .ToList () Share Improve this … can you sell alcohol on christmas day