LINQ: RemoveAll and get elements removed - Stack Overflow var sublist = list Where(x => x Condition) ToArray(); list RemoveAll(x => x Condition); The second example is O(n^2) for no reason and the last is perfectly fine, but less readable Edit: now that I reread your last example, note that as it's written right now will take out every other item
Using LINQ to remove elements from a List lt;T gt; - Stack Overflow You cannot do this with standard LINQ operators because LINQ provides query, not update support But you can generate a new list and replace the old one var authorsList = GetAuthorList(); authorsList = authorsList Where(a => a FirstName != "Bob") ToList(); Or you could remove all items in authors in a second pass
List lt;object gt;. RemoveAll - How to create an appropriate Predicate Of course, the RemoveAll will remove from the collection all the T instances that return True with the predicate applied C# 3 0 lets the developer use several methods to pass a predicate to the RemoveAll method (and not only this one…) You can use: Lambda expressions vehicles RemoveAll(vehicle => vehicle EnquiryID == 123); Anonymous methods
Removing items from a list with LINQ (removeAll) - Stack Overflow result ResultantPoliciesTable RemoveAll(item => result PoliciesTable Select (f => f PolicyName) Contains(item PolicyName)); This works, but if an integer property of the object in ResultantPoliciesTable called ManagementID equals a value I will supply then I do not want this object to be removed Can anyone help me extend this query to achieve
c# - RemoveAll for ObservableCollections? - Stack Overflow I am looking for Linq way (like RemoveAll method for List) which can remove selected items from my ObservableCollection I am too new to create an extension method for myself Is there any way I r
LINQ: How to Use RemoveAll without using For loop with Array Is there a more simple way to do this RemoveAll in LINQ without using the for loop? Thanks for any help in advance! EDIT: Unfortunately the type of variable that Program and Version are based off of (which is a constraint of the framework I'm working in) restricts us such that I cannot access the "Any" member
Performance difference between . RemoveAll and . Where in C# The RemoveAll approach: list RemoveAll(o => !someOtherList Contains(o Property)); foreach (var i in list) { } The Where approach: foreach (var i in list Where(o => someOtherList Contains(o Property)) { } I understand that the first approach is actually going to manipulate what is in the list where as the second one won't
c# - List lt;T gt; RemoveAll() isnt removing items - Stack Overflow You have to call RemoveAll on alert UserAlerts, because ToList creates a new collection If you remove all items of that collection, it does not change UserAlerts alert UserAlerts RemoveAll(x => userIds Contains(x UserId)); Update: If UserAlerts is not a List, use the Where extension method (as wudzik said in his answer):