c# linq change item in list. listOfRequestAssigned.Where(x => x.RequestedNumber == CurrentRequest).ToList().ForEach(x => { x.RequestCompleted = true; x.OtherProperty = value; } ); Where(...) give you a query, not a Request or a List. How can we update the values of a collection using LINQ in C#? If the collection is a List, then we can make use of ForEach extension method which is available as part of LINQ. Fruit Details Before Update. Select in LINQ Example: LINQ Select in C# Syntax Dim maxAmount = From item In itemList Where item.Name = "BOX" Select item.max(Function(x) x.PKeyList) I would like to find the highest value for the group with Name "BOX" and get the max value form the ⦠Sum (LINQ) Enumerable.Sum is extension method from System.Linq namespace. If you only need some target columns' value from the selected rows (for example, we only need "Id" and "Name" columns' value), you can create a new anonymous type of enumerable to bind the data. Gets sum of values from ⦠Change the property of objects in a List using LINQ You can use the below code. You want to get students with red socks on their legs. Drag a Text Box control onto the form, and position it towards the center of the form. How to find the duplication from the list using either LINQ or ⦠var validCustomers = customers.Where(c => c.IsValid); foreach( Customer cust in validCustomers) { cust.CreditLimit = 1000; } Getting to One Line of Code If you're willing to use the ToList method to convert the collection into a List, you can get an even terser statement by using the List object's ForEach method. IList countryList = GetCountryList (); var countryNames = countryList .Where (c => c.Language=="English") .Select (s => s.Name);
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