Question

.NET c# IENumerable Linq selection

Asked by: mc_101

I need to fill an IENumberable with products and I need to specify which indexes I want to use.

I have this code:

IEnumerable<Product> productSelection = from product in products..... select product;

I need to replace products..... with products. something that lets me specify indexes. I don't know if I'm even on the right path here.

I need to be able to specify I need index 0-1 or 4-6 for example.

How would I accomplish this?

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Asked On
2009-11-06 at 03:04:52ID24877478
Tags

.NET

,

c#

,

IENumerable

,

Linq

,

selection

Topics

C# Programming Language

,

Language Integrated Query - LINQ

,

Visual Studio

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: naspinskiPosted on 2009-11-06 at 03:36:58ID: 25758253

You could do something like this

 

by: naspinskiPosted on 2009-11-06 at 03:38:27ID: 25758260

hmm... let me try that again:

int[] IdsToInclude = new int[] {0,1,4,5,6};
IEnumerable<Product> productSelection = products.Where(x => IdsToInclude.Contains(x.Id));

                                              
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Select allOpen in new window

 

by: mc_101Posted on 2009-11-06 at 03:47:20ID: 25758299

The ID is irrelevant as I don't know which IDs to return. I need to return based on index as they are returned in my search.

 

by: naspinskiPosted on 2009-11-06 at 04:20:46ID: 25758456

oooh...

int[] IndexesToInclude = new int[] {0,1,4,5,6};
List<Product> filteredProducts = new List<Product>();
foreach(int i in IndexesToInclude)
  if(i < productSelection.Count()) filteredProducts.Add(productSelection.ToArray()[i]);
                                              
1:
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3:
4:

Select allOpen in new window

20120131-EE-VQP-002

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