LINQ in VB Issue: Unknown Variable

[kencox]

I'm looking for a list of known issues but in the meantime, here's one that's causing hundreds of errors in my ASP.NET VB project. I'm using Entity Framework.

JustCode flags 'apt' in the following as "VisualBasic.NET: Unknown variable or member 'apt'.

        For Each apt In Apts
            aptinfo = New AppointmentInfo(apt.Subject, apt.Start, apt.End)
            sessApts.Add(aptinfo)
        Next

Ken

[Tsviatko Yovtchev]

Hi Ken

The known issues list is coming soon, please, stay tuned.

As for the errors you are experiencing it's kinda hard to reproduce/investigate using the code snippet you provided. Can you provide a self-contained sample, i.e. the complete method where that occurs together with the definitions of all the types used in it where each type refers only primitive types or other types from the sample? If that's not possible what's the closest thing we can get?

Best wishes,

Tsviatko

the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.

[Michael Josiah]

I am experiancing the same issue. Please try and test the scenario using VB.NET and Linq to Objects. It also does not like inferred variables within a for loop.

So lets say you have a collection of People objects that you want to loop through

for each p in persons

  p.name = "michael"

next

JustCode would highlight "p" with the message VisualBasic,NET : Unknown member or variable 'p'

[kencox]

For an easier example to set up, try the following in an ASP.NET 3.5 VB web page:

    Protected Sub Page_Load _
      (ByVal sender As Object, ByVal e As System.EventArgs) _
        Handles Me.Load
        Dim q = From f In System.Drawing.FontFamily.Families
        For Each fnt In q
            Response.Write(fnt.Name & "<br />")
        Next
    End Sub

You'll see that JustCode flags all the references to "fnt" even though they are valid in VB LINQ.

Thanks to Michael for also contributing an example.

Ken
Microsoft MVP [ASP.NET]

[Tsviatko Yovtchev]

Hi guys,

Thanks a bunch for the code samples. We are able to reproduce the issue on our side now so fixing it is inevitable. We'll let you know as soon as we release the build with that fix. Once again thanks for the code samples. I really appreciate it.


Best wishes,

Tsviatko

the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.