CODEWITHSUNDEEP
c#linqc#-4.0
user1890098
user1890098

Reputation: 495

using LINQ to get a particular set of objects from a list of objects

I have a code that returns a set of objects. I want to segregate a particular object from that set. I'm trying to use LINQ to do that. But I'm not getting that,

var registerAck = ((pointAck)((response.Item))).Items[0].Item;

var poke = ((pointAck)((response.Item))).Items.Where(x => x.GetType() == typeof(poker));

I'm getting a System.Linq.Enumerable.WhereArrayIterator<> in my poke.

What am I doing wrong here?

Upvotes: 0

Views: 210

Answers (3)

Vikas Gupta
Vikas Gupta

Reputation: 4465

  1. Adding .ToList may or may not be required, because it depends on how you want to use poke. For example, if you are going to iterate over the results using foreach only once, then .ToList is redundant, and unnecessary code execution and allocations.

In short, there may be nothing wrong with your code, depending on how you want to further use poke.

  1. While we are at it, FYI, there is an alternative to specific filtering you are doing here with Where method.. Checkout .OfType

http://msdn.microsoft.com/en-us/library/vstudio/bb360913(v=vs.100).aspx

It will be slightly more compact and more readable. Items.OfType<poker>();

Upvotes: 2

user1890098
user1890098

Reputation: 495

Sorry. I forgot to add .ToList(). It works.

var poke = ((pointAck)((response.Item))).Items.Where(x => x.GetType() == typeof(poker)).ToList();

Upvotes: 0

zs2020
zs2020

Reputation: 54504

Add .ToList() to convert it to the type of System.Collections.Generic.List<TSource>

var poke = ((pointAck)((response.Item))).Items
           .Where(x => x.GetType() == typeof(poker)).ToList();

Upvotes: 3

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