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...
#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...
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 ...
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...
Text.StringBuilder For Each pers In petOwnersGrouped output.AppendFormat(pers.FirstName & ":" & vbCrLf) For Each pt In pers.PetList output.AppendFormat(vbTab & pt.Name & vbCrLf) Next Next Console.WriteLine(output) ' This code produces the following output: ...
(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...
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 ...
// 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. var queryNamesScores2 = from nameLine in names let splitName = nameLine.Split(',') from ...
List<int> numbers = [5,4,1,3,9,8,6,7,2,0];// The query variables can also be implicitly typed by using var// Query #1.IEnumerable<int> filteringQuery =fromnuminnumberswherenumis<3or>7selectnum;// Query #2.IEnumerable<int> orderingQuery =fromnuminnumberswherenumis<3or>7orderbynum...
UsingcontextAsNewAdventureWorksEntities()DimproductsList = _FromproductIncontext.Products _SelectCByte(product.MakeFlag)' Throws an SqlException exception with a "Arithmetic overflow error' for data type tinyint" message when a value of 1 is iterated over.ForEachmakeFlagInproductsList Console.WriteLine...