Question

I've tried the following easy LINQ query:

From Proj In Query.All(Of Project)() _
Select Proj _
Where Proj.Name = "Foobar"

Resulting in the following exception: Member 'Microsoft.VisualBasic.CompilerServices.Operators.CompareString' is not supported.

Answer 1

1

Likely, that's one more issue related to VB.NET we should fix - it really uses a different method in this case, but our LINQ translator doesn't handle this.

We'll fix the issue in few days.

answered Oct 12 '10 at 05:12

Alex Yakunin
2971●4●4●12

hehe, pretty crucial feature to start using DO with VB.NET

(Oct 12 '10 at 05:32) Michiel Alders

Michiel: You must have in mind that DO4 was written primary for C#, C# project templates, PostSharp, etc...

(Oct 12 '10 at 12:48) Peter Šulek

1

That's true; also, VB.NET users historically aren't the group we're focused on, but that's not an excuse :( We'll fix this issue (as well as few other related to VB.NET) on this week.

Btw, we were aware there are issues related to VB.NET specific methods in LINQ (most of VB.NET-specific methods aren't supported). But one of our policies is strong focus on customer requirements - i.e. we normally don't resolve non-critical issues until this isn't requested by some of customers of adopters.

(Oct 12 '10 at 14:13) Alex Yakunin

1

So currently there are two issues related to VB.NET:

Issue 521 - adding LINQ compiler for each method is pretty easy problem itself (see this topic and related post in forum), but there are ~ 20 of such methods.
Issue 829 - must be quite simple.

(Oct 12 '10 at 14:19) Alex Yakunin

2

Both issues are fixed, so VB.NET got nearly equal support as C#.

(Nov 08 '10 at 10:09) Alex Yakunin

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