ASP.NET MVC

Re: this in vb.net: <% using Html.Form(p=>p.Update(ViewData.Product.ProductID))%>

Chuwanga — Mon, 07 Apr 2008 20:38:52 GMT

Hello alivemedia!

You're right the lack of lambda-support in VB.NET is really ackward. I use a syntax that works, but is far to long to be nicely readable, but it gives you the benefit of refactoring-support:

<%Using Html.Form(Of CustomerController)(New System.Action(Of CustomerController) _
     (Function(c As CustomerController) c.Login()), FormMethod.Post)%>

    <%-- FORM CONTENT --%>

<%End Using %>

As a workaround you need to declare the methods, which you want to use in your Html.Form() call (here it is Login() in my CustomerController class), as functions of type object (or something) else and just return Nothing in the respective Method. This worked for me. A sample Login() method would look as follows:

1    Public Class CustomerController
2        Inherits System.Web.Mvc.Controller
3    
4      Public Function Login() As Object
5    
6         RenderView("Login")
7         Return Nothing
8    
9      End Function
10   
11   End Class

Hope I could help!

Greetings,

Jimmy

Re: this in vb.net: <% using Html.Form(p=>p.Update(ViewData.Product.ProductID))%>

alivemedia — Sat, 05 Apr 2008 13:56:48 GMT

Thanks, I tried that syntax with no luck :(

I will have to go back later and update this stuff, just trying to get it right from the get go.

having the same problem with the ActionLink helper

Re: this in vb.net: <% using Html.Form(p=>p.Update(ViewData.Product.ProductID))%>

levib — Sat, 05 Apr 2008 05:01:53 GMT

alivemedia:
Function(p) p = ViewData.Product.ProductID

I think the proper syntax is Function(p) p.Update(ViewData.Product.ProductID).

Check http://msdn2.microsoft.com/en-us/library/cc138590.aspx for more info. Honestly, though, if the syntax isn't familiar to you I'd recommend using one of the other overloads that doesn't use a lambda. It'll save you time trying to decipher it when you have to go back and look at it in the future. :)

Re: this in vb.net: <% using Html.Form(p=>p.Update(ViewData.Product.ProductID))%>

nberardi — Sat, 05 Apr 2008 04:27:59 GMT

VB.NET doesn't support Lambda expressions.

this in vb.net: <% using Html.Form(p=>p.Update(ViewData.Product.ProductID))%>

alivemedia — Fri, 04 Apr 2008 19:33:09 GMT

How do I do this in VB.net:
<% using Html.Form<ProductController>(p=>p.Update(ViewData.Produc t.ProductID))%>

This is using a lambda for the form tag in c#, I searched everywhere for the correct vb.net syntax?

I tried this with no luck:
<% Using Html.Form(Of ProductController)(Function(p) p = ViewData.Product.ProductID)%>