generic-list Questions

4

Is it possible to put a [Required] attribute onto a List<> property? I bind to a generic list on POST and was wondering if I could make ModelState.IsValid() fail if the property has 0 items in ...
Hoot asked 21/6, 2011 at 16:41

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Jersey 1.6 can produce: @Path("/stock") public class StockResource { @GET @Produces(MediaType.APPLICATION_JSON) public List<Stock> get() { Stock stock = new Stock(); stock.setQuantity(3...
Pennipennie asked 21/5, 2011 at 11:53

6

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I have two List<T> objects: For example: List 1: ID, Value where Id is populated and value is blank and it contains say IDs from 1 to 10. 1,"" 2,"" ... 10,"" List 2: ID, Value and other at...
Badoglio asked 19/8, 2009 at 9:45

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I came across this statement: "When using foreach on a list of objects, the iterated object instance is not editable, but the object properties are editable" Could someone demonstrate the abov...
Sabin asked 29/6, 2016 at 12:19

2

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Somewhere in my code I have an object that I already know that is a list. But I don't know the type parameter of that list. I need to iterate over it's items. I tried to cast that object to a list ...
Appling asked 11/1, 2016 at 6:53

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Consider the following partial view code snippet List<sellingPrice> Prices = ViewBag.Prices; foreach (var mgmp in mg.messageGroup.messageGroupMessagePLUs) { if (Prices.Any(x => x.pluId =...
Dornick asked 16/1, 2013 at 15:14

4

In the following code Java, I have created a list nums. I can assign the another list during the declaration. But new items cannot be added except the null. So, does it mean the nums is readonly? W...
Rood asked 16/9, 2015 at 16:53

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I have BindingList object which is attched with DataGridView. BindingList<FilesToProcessDataModels> Listfiles = new BindingList<FilesToProcessDataModels>(); dataGridFiles.DataSource = ...
Adriel asked 5/12, 2013 at 11:30

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I read this code: List<long> userIdList = new List<long>(); But I jumped to the definition(use VS2012) of List (in System.Collections.Generic), I found: public class List<T> :...
Venice asked 8/7, 2015 at 7:21

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I'm doing the synchronization between the two lists. IList<Event> GoogleEvents and Table<myEvent> DB.Events; On google side i'm using this String Summary, String Description, EventDa...
Loathly asked 10/7, 2014 at 8:31

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Why is IList defined like this? public interface IList<T> : ICollection<T>, IEnumerable<T>, IEnumerable public interface ICollection<T> : IEnumerable<T>, IEnum...
Ultraism asked 20/3, 2015 at 6:44

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I would be certain that this question addresses something that would have been brought up in a previous question, but I was unable to find it. There is a method in a C# class that takes as a param...
Rosamariarosamond asked 26/3, 2009 at 15:36

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Is there a built-in method to convert the .NET List<> into the F# list?
Conn asked 23/6, 2010 at 20:14

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I have a set of elements/keys which I'm reading from two different config files. So the keys may be same but with different values associated with each of them. I want to list them in the sorted o...
Fairleigh asked 5/8, 2010 at 12:15

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ArrayList, which I use in legacy Compact Framework code, does not seem to be available in newfangled (.NET 4.5.1) code. I am storing instances of custom classes in it. What is a good replacement ...
Herne asked 21/3, 2014 at 21:52

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I have a generic list that I'm removing items out of using List.Remove(Object). I have been removing items but whenever I get to the fifth item I'm removing it fails and does not remove it from the...
Delagarza asked 17/12, 2009 at 16:35

3

In terms of speed in search, is it better to search the keys of a dictionary or the values of a list? In other words, which of these would be most preferable? Dictionary<tring,string> dic ...
Deviation asked 27/1, 2014 at 22:55

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I build my list like this: public static List<SearchFormula> SearchData(string searchString) { var searchResults = new List<SearchFormula>(); SqlDataReader drResults = FormulaUtilit...
Clapperclaw asked 16/12, 2013 at 21:6

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Suppose we have a class called Dog with two strings "Name" and "Id". Now suppose we have a list with 4 dogs in it. If you wanted to change the name of the Dog with the "Id" of "2" what would ...
Dode asked 9/10, 2013 at 19:34

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In my Visio 2007 UML document I am unable to figure out how I can add an operation to an Interface that returns a generic List<MyCustomType> type. For example: Say I have a class named "MyC...
Ivory asked 5/1, 2012 at 19:13

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I'm looking for a way to pass in a list of strongly typed property names into a method that I can then dissect and get the properties that the caller is interested in. The reason I want to do this ...
Cell asked 11/6, 2013 at 11:11

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(This question arises from a discussion that started here) I was comparing the timings for looking for a true value in a List<bool> using List.Contains() with those for a hand-rolled loop. ...
Tympanites asked 17/4, 2013 at 14:0

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Does freeing generic lists like TList<string>, TList<Double>, TList<Integer> or TList<TMyRecord>, where TMyRecord is declared like: type TMyRecord = record MyString: stri...
Suite asked 29/3, 2013 at 16:8

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I'm currently making my own very basic generic list class (to get a better understanding on how the predefined ones work). Only problem I have is that I can't reach the elements inside the array as...
Euchologion asked 19/2, 2013 at 16:24

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Imagine this struct : struct Person { public string FirstName { get; set; } public string LastName { get; set; } } And following code : var list = new List<Person>(); list.Add(new ...
Hermosa asked 18/2, 2013 at 20:55

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