C# linq where or condition
WebApr 7, 2024 · Just reverse the condition : var lstStudentId = Students .GroupBy(o => o.StudentId) .Where(g => filterClassId.All(f => g.Any(s => s.ClassId == f))) .Select(g => g.Key) .ToList(); A alternative, it's to check if the filter less the student's class result in nothing. Then the student has all class in the filter :WebApr 11, 2024 · I have to write a query using C# / LINQ, the equivalent of this: select RoleName from dbo.Roles where RoleId in (2,3,4,5,6) In my code I have a list of short …
C# linq where or condition
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WebApr 11, 2024 · LINQ (Language Integrated Query) is a powerful feature in C# that allows you to query and manipulate data in a more expressive and concise manner. It introduces a set of standard query operators ...Web6 hours ago · Performace of LINQ in case of Skip, Take & count. I have the following code which works fine and I am getting the required details as expected. This data is passed on to the front end to be displayed in a grid. public object Test (SearchGridParam obj) { List res = (from data in _entity.TableNoTracking where …
WebNov 22, 2014 · If I divide the condition like the below example then the records are being fetched correctly. List customerList=customerList.Where …WebJan 26, 2024 · Using the .net Framework 4.8 I'm trying to write an some Linq where the Where clause contains items meeting certain criteria - but excludes a subset of those …
WebThis C# LINQ tutorial helps you master LINQ and take your data manipulation skill to the next level. Learn the LINQ basics and how to construct LINQ queries. Explore LINQ to …WebJan 26, 2024 · This article explain how use the if condition to add additional Where constraints based on a condition.. Because Where is producing an IQueryable, the …
Webvar element = enumerable.Where(e => Condition(e)).Select(e => e.Property).FirstOrDefault(); var newElement = new Element(dependency1: dependency1, dependency2: dependency2); 4. Each lambda function receives a new indentation level When you frequently work with LINQ, you mostly have lambda functions as arguments …
WebLinq用於查詢 ,而不用於更新 。 您可以將兩個列表連接起來以排隊更新對象,但是仍然需要循環進行更改: var query = from quest in myList join oldquest in _ryderQuestions on new { quest.QuestionID, quest.ShowOn, quest.QuestionOrder } equals new { oldquest.QuestionID, oldquest.ShowOn, oldquest.QuestionOrder } select new {oldquest, quest}; foreach(var …in an lcr circuit as shown belowin an iterative wayWebNov 22, 2024 · Solution 2. Does EventRegistrationViewModel have YearID and BranchID properties? You probably need to do your Where before your Select on the eventRegistration direct. List contentModel = db.eventRegistration .Where (c => c.IsActive == true && c.YearID == yearID && …in an lcr series ac circuit the currentWeb1 day ago · Use switch statement. first retrieve the operator value from the filter object, and then use it in a switch statement to dynamically generate the appropriate filter condition. If the operator value is null, the filter condition is ignored and all …inazuma fishing locations mapWeb使用LINQ to SQL ORM以編程方式在測試數據庫和開發人員數據庫之間來回切換的最簡單方法是什么 ... 2009-06-08 18:00:46 793 3 c#/ linq/ linq-to-sql. 提示: 本站為國內最大中英文翻譯問答網站,提供中英文對照查看 ... [英]What is the best way to test a …inazuma fishing locationsWebAug 17, 2024 · These extension methods are meant to conditionally apply LINQ clauses if a boolean is set to true. For example, you might use them like this: var query = …in an ivory towerWebSep 21, 2024 · A query expression is a query expressed in query syntax. A query expression is a first-class language construct. It is just like any other expression and can …inazuma fishing spots genshin