Question

I ran into a strange issue over the weekend while I was working on an asp.net mvc project in vb.net. I created an extension method to convert an integer to the corresponding month it is associated with. I tested the extension method in a console application so I know it is working.

In my asp.net mvc project I have a view and want to call the extension method but I get an error that the extension method is not recognized. I imported the namespace it was contained in and still couldn’t shake the error. Any idea what’s going on? I don’t have my code with me, but I can post that tonight if it will help. Thanks!

Extension Method:

Imports System.Runtime.CompilerServices

Module SiteExtensions
    <Extension()> _
    Public Function ConvertToMonth(ByVal monthNumber As Integer) As String
        Dim month As String = String.Empty
        Select Case monthNumber
            Case 1
                month = "January"
            Case 2
                month = "February"
            Case 3
                month = "March"
            Case 4
                month = "April"
            Case 5
                month = "May"
            Case 6
                month = "June"
            Case 7
                month = "July"
            Case 8
                month = "August"
            Case 9
                month = "September"
            Case 10
                month = "October"
            Case 11
                month = "November"
            Case 12
                month = "December"
        End Select
        Return month
    End Function
End Module

View:

<%  For Each m As Integer In DirectCast(ViewData("Months"), IEnumerable)%>
<a href="#"><%=m.ConvertToMonth()%><br /></a>
<%Next%>

Error is: “ConvertToMonth is not a member of Integer”

Jon

Answer 1

Make sure you declare your module as Public.