re: Collection Initializers in Visual Basic 10

Madhuri — Tue, 12 Jan 2010 13:58:17 GMT

Hi Beth,

I am trying to pass a ready only property to collection initiatizer in VB.Net.But I keep on getting this error "Property 'variables' is 'ReadOnly'".

Following is the code snippet which throws the error:

Dim body As New Sequence() With {.Variables = {numbers}, .Activities = {New WriteLine With {.Text = "Initial collection:"}, New PrintCollection(Of Integer)() With {.Collection = numbers}, New WriteLine With {.Text = "-----------------"}, New WriteLine With {.Text = "Clearing the collection"}, New ClearCollection(Of Integer)() With {.Collection = numbers}, New PrintCollection(Of Integer)() With {.Collection = numbers}, New WriteLine With {.Text = "-----------------"}, New AddToCollection(Of Integer)() With {.Collection = numbers, .Item = random.Next(1, 10)}, New AddToCollection(Of Integer)() With {.Collection = numbers, .Item = random.Next(1, 10)}, New AddToCollection(Of Integer)() With {.Collection = numbers, .Item = random.Next(1, 10)}, New WriteLine With {.Text = "Collection with three random numbers:"}, New PrintCollection(Of Integer)() With {.Collection = numbers}, New WriteLine With {.Text = "-----------------"}, New [If]() With {.Condition = New ExistsInCollection(Of Integer)() With {.Collection = numbers, .Item = 5}, .Then = New RemoveFromCollection(Of Integer)() With {.Collection = numbers, .Item = 5}}, New WriteLine With {.Text = "Collection without a 5:"}, New PrintCollection(Of Integer)() With {.Collection = numbers}}}

In the above code snippets, Variables and Activities are read-only properties of Sequence Class.

Thanks!

.NET Framework 4 :: Inicialización de colecciones en Visual Basic 10

Jorge Serrano - MVP Visual Developer - Visual Basic — Sat, 06 Jun 2009 13:35:24 GMT

Beth Massi (Microsoft) y en el equipo de Visual Basic, nos muestra una de las nuevas características