I’m C# developer working in a VB.net project and as everybody said, if you know C# you won’t have any problems with VB. Well this hasn’t been 100% in my case (probably a 98%).
There are some annoyances in VS that drive me crazy like the fact that reorganises the code automatically when I press enter or when I add something in a multiple line sentence it removes all my indentation (bloody _ )
Recently I came across another issue with VB, the events.
The environment: ASP.net, AJAX… and VB, of course.
I created a user control called “RequestSearchControl” and I added an event called “RequestSelected“.
Partial Public Class RequestSearchControl
Public Event RequestSelected(ByVal requestID As Integer)
Private Sub SelectRow(ByVal rowIndex As Integer)
Good, everything compiles!
Then I used my brand new user control in a Page
and I added the handler in the code (I added the handler in the markup, in the code and in the OnLoad using AddHandler just in case…)
Partial Public Class RequestEditControl
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
AddHandler ParentRequestSearch.RequestSelected, AddressOf ParentRequestSearch_RequestSelected
Protected Sub ParentRequestSearch_RequestSelected(ByVal requestID As Long) Handles ParentRequestSearch.RequestSelected
‘ Do Something
Good again, everything compiles! Again! I’m on the good track!
But then… nothing happened!
When I say nothing I mean, NOTHING! No compile errors, no exceptions and it executes the code that should raise the event, and nothing.
After a number of nothing-happening-trials I thought, “Why don’t I add a delegate as I would have done it in c#?
Public Delegate Sub RequestSelectedDataHandler(ByVal requestID As Integer)
and I changed the event definition:
Public Event RequestSelected As RequestSelectedDataHandler
And… Voila! all the events worked.
Why didn’t the compiler or the runtime complain? I don’t know but it really didn’t make me think any better about VB...