#regionstring数组string[] ProjIdList = ProjIdset.Trim().Split(',');#endregionlist_data= list_data.Where(p => !(ProjIdList.Contains(p.WareName))).ToList(); 总结:IN与Not IN通过“!”来区分,且除string的类型字段外,其他类型都需先进行数组转换,方可使用! 如果哪里有写错的地方,欢迎指正! 如...
linq not in用法 LINQ中的"Not In"用法类似于SQL中的NOT IN。它用于筛选不包含在指定集合中的元素。 以下是使用"Not In"的简单示例: ```csharp //创建一个包含一些数字的集合 List<int> numbers = new List<int> { 1, 2, 3, 4, 5 }; //创建一个包含要排除的数字的集合 List<int> exclude...
在LINQ to Entities中,要实现"NOT IN"子句的功能,可以使用.Contains()方法的否定形式。以下是一个示例: 代码语言:csharp 复制 usingSystem;usingSystem.Linq;usingSystem.Collections.Generic;classProgram{staticvoidMain(){List<int>numbers=newList<int>{1,2,3,4,5};List<int>excludeNumbers=newList<int>{3...
select * from table1 where column1 = 2016 and column2 ='ZY' and column3 not in(select column3 from table2); 2.LINQ中的in和not in用法List<testInfo> listAll = new List<testInfo>(); listAll.Add(new testInfo() { id = 1, name = "11", test = "111" }); listAll.Add(new ...
代码语言:javascript 运行 AI代码解释 Select * From ProductList P Where Date='2021-02-01' AND DealerCode Not IN(Select DealerCode from Dealers D With (nolock) Where D.ProductId=P.ProductId) 我正在尝试用LINQ编写查询 c# linq linq-to-sql ...
("The two folders are not the same"); }// Find the common files. It produces a sequence and doesn't// execute until the foreach statement.varqueryCommonFiles = list1.Intersect(list2, myFileCompare);if(queryCommonFiles.Any()) { Console.WriteLine($"The following files are ...
(v.FullName); } var queryList2Only = (from file in list2 select file) .Except(list1, myFileCompare); Console.WriteLine(); Console.WriteLine($"The following files are in list2 but not list1 (total number = {queryList2Only.Count()}:"); foreach (var v in queryList2Only....
// Merge the data sources by using an anonymous type.// Note the dynamic creation of a list of ints for the// ExamScores member. We skip 1 because the first string// in the array is the student ID, not an exam score.varqueryNamesScores2 =fromnameLineinnamesletspl...
ToArray, ToList, ToDictionary、ToLookup、AsEnumerable、AsQueryable 序列→元素或值 Sequence→Element or Value 以下查询运算符接受输入序列并发出单个元素或值。 元素运算符Element operators IEnumerable<TSource>→TSource 从序列中选取单个元素。 First、FirstOrDefault、Last、LastOrDefault、Single、SingleOrDefault、...
Adding data to new cells in a new column in DataGrid with C# Adding Drag/Drop to a text box Adding Drag/Drop/Resizable Selection Rectangle to Image Editor Adding if condition as if button not clicked Adding Image to the DataTable Adding item to the static class of List Adding Items to e...