Put field 2 first, then // reverse and combine fields 0 and 1 from the old field IEnumerable<string> query = from line in lines let fields = line.Split(',') orderby fields[2] select $"{fields[2]}, {fields[1]} {fields[0]}"; File.WriteAllLines("spreadsheet2.csv", q...
某些类型的查询操作(例如Except、Distinct、Union和Concat)只能用基于方法的语法表示。 如何合并和比较字符串集合 此示例演示如何合并包含文本行的文件,并对结果排序。 具体而言,此示例演示如何对两组文本行执行串联、联合和交集。 它使用相同的两个文本文件,如前面的示例所示。 该代码显示Enum...
3.對List<T>的distinct操作必須定義GetHashCode() 和Equals方法才能成功 不然的話,就只能用group by了 public partial class Person { public String Name { get; set; } public Int AGe { get; set; } public override bool Equals(object obj) { if (obj == null) return false; if (this.GetType()...
Distinct Distinct Group By GroupBy Group Join GroupJoin Order By OrderBy Order By … Descending OrderByDescending Order By (with multiple fields) ThenBy Order By … Descending (with multiple fields) ThenByDescending Select Select Skip Skip Take Take Take While TakeWhile Where WhereCreating...
Optional. A Distinct clause restricts the values of the current iteration variable to eliminate duplicate values in query results. For example:VB Copy ' Returns a list of cities with no duplicate entries. Dim cities = From item In customers Select item.City Distinct ...
I might have more fields(let say 10 field).From that I will do distinct using the query you have provided..But I can get only the field which are present in group by...I need to get all the fields...Is that possible? Saturday, March 27, 2010 10:01 PM ...
DistinctDistinct Group ByGroupBy Group JoinGroupJoin Order ByOrderBy Order By … DescendingOrderByDescending Order By (with multiple fields)ThenBy Order By … Descending (with multiple fields)ThenByDescending SelectSelect SkipSkip TakeTake Take WhileTakeWhile ...
You can usually rewrite such a query by putting an equivalentwhereclause before the projection (in which case you can drop the projection). Distinct Distinctreturns the unique values of a field or property of the documents in the collection. You use a projection to identify the field or proper...
how to get sum using linq in datatable with multiple where condition? How to get the distinct value form DataTable using LINQ? How to get the number of rows selected by a LINQ query? How to get the range of strings between two given string values (A to M) in LINQ? How to get the...
order by x => x.Name then by x => x.FirstName descending for each x => console.log(x) select x => {x.Name} Conclusion Works with multiple Browsers (even IE) Angular Support (event directly in Views if using Strings as Expression-Syntax) ...