VB how to add a list item to a class - vb.net

Question

No so familiar with VB how would one add to a list in a class item ?
public class Demo
public Property Id as Integer
public RevsList as List (of ProjectItem)
end Class
public class ProjectItem
public Property Rev as Integer
public Title as string
end Class
With code i try to ad a ProjectItem to the Revslist
Dim revision as new Demo With {.id = 1}
revision.RevsList.Add(new ProjectItem() With {.Rev =33, .Title="description"}) '<= what is the correct syntax todo this
Hod does one add a item to such a list.

Answer 1

You just missed out a separator and a dot before the title variable....
Dim revision as new Demo With {.id = 1}
revision.RevsList.Add(new ProjectItem() With {.rev =33, .title="description"})
I also notice that you have declared RevsList in your demo class, but not initialised it.
You can either do that in the demo class but using the New keyword:
public class Demo
public Property Id as Integer
public RevsList as New List (of ProjectItem)
end Class
Or you can do it before adding anything to it:
Dim revision as new Demo With {.id = 1}
revision.RevsList = New List(of ProjectItem)
revision.RevsList.Add(new ProjectItem() With {.Rev =33, .Title="description"})
EDIT
If you are still having issues, try creating the ProjectItem before adding it. It is a bit more verbose, but is arguably easier to read:
Dim revision As New Demo
revision.Id = 1
Dim NewProjectItem As New ProjectItem
NewProjectItem.Rev = 33
NewProjectItem.Title = "description"
revision.RevsList.Add(NewProjectItem)