CODEWITHSUNDEEP
vb.netproperties
thinkthing
thinkthing

Reputation: 83

VB.net automatic property - readonly?


is it possible (and how) to make a readonly automatic property in VB 2010? 

Public Class Foo  
  Public Property Value As Integer  
  Public Sub New()  
      _Value = 123
  End Sub  
End Class

problem is that users can write to the property. thanx

Upvotes: 7

Views: 4349

Answers (4)

Heinzi
Heinzi

Reputation: 172210

It is now supported in VB14 (Visual Studio 2015 and later):

Public Class Foo  
    Public ReadOnly Property Value As Integer = 123
End Class

See https://github.com/dotnet/roslyn/wiki/New-Language-Features-in-VB-14#read-only-auto-properties

In earlier versions, you need to create a backing field.

Upvotes: 12

Hans Olsson
Hans Olsson

Reputation: 54999

No, VB.Net does not support readonly auto properties. See this MS Connect issue for the reasoning behind this (specifically the comment made by Jonathan Aneja).

Upvotes: 5

user3525511
user3525511

Reputation:

thinkthing,

you may create a code snippet to add a generic property.

http://msdn.microsoft.com/en-us/library/ms165392(v=vs.90).aspx

Be mindful that visual studio has changed the basic way we build properties, with the get set, and now only one line is required with the get set understood. The full getter and setter can be built if you do need logic built within. I refer you here: http://msdn.microsoft.com/en-us/library/dd293589.aspx

and here, to a SO discussion regarding a similar discussion: Using snippets to make Class properties in VB.net. prop only gives "property () as " Whats up?

Upvotes: 0

R. Martinho Fernandes
R. Martinho Fernandes

Reputation: 234374

No, it isn't possible. You will have to create an explicit backing field.

Upvotes: 2

Related Questions