Higher order function in VB.NET (Select) gives me a "Select is not a member of [...]"

Question

I am a C# lover, and not very familiar with VB.NET. I am trying to do a classic:

var data = data.Select(c=>c.Id).ToList()

However, when I do this in VB.NET

<% rModel.SearchProductIds = Model.Products.[Select](Function(c) c.Id).ToList()%>

I get the following error:

"Select is not a member of System.Collections.Generic.List"

I don't understand why. My framework is .NET 3.5, so it should work.

Is it a syntax mistake?

score 2 · Accepted Answer · edited May 23 '17 at 12:12

2

You probably need to

@Imports System.Linq

in your view.

Or perhaps more appropriately, add a property to your model that retrieves your product IDs instead of doing that right in the view.

If you use Linq a lot and don't want to add the @Imports statement repeatedly, follow the answer here to have it automatically imported to all of your views.

edited May 23 '17 at 12:12

Community

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answered Sep 17 '14 at 20:33

Cᴏʀʏ

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It is a web forms project (gone MVC-style as much as it can), and I have <%@ Import Namespace="System.Linq" %> . Still same problem. Hmmm :) Any ideas? Otherwise I will go the property way – Lars Holdgaard Sep 17 '14 at 20:39
Odd. That namespace comes from the `System.Core` assembly. What version of the .NET framework are you targeting? – Cᴏʀʏ Sep 17 '14 at 20:45
I am targeting .NET 3.5 (I just rechecked) – Lars Holdgaard Sep 17 '14 at 20:50
Adding a property is the correct solution anyway, so i marked as answer – Lars Holdgaard Sep 18 '14 at 19:20

Higher order function in VB.NET (Select) gives me a "Select is not a member of [...]"

1 Answers1