我如何将此C＃属性转换为VB

Question

I am an ASP MVC 3 noobie working my way thru the music store tutorial, but translating everything into VB (I work in a VB shop).

The tutorial has a line:

public class Album
{
    [Required(ErrorMessage = "An Album Title is required")]
    [StringLength(160)]
    public string   Title      { get; set; }
}

How do I translate this into VB? The obvious choice is:

Public Class Album

    <Required(ErrorMessage = "Price is required")> //Compiler says:'ErrorMessage' is not declared. It may be inaccessible due to its protection level.
    <StringLength(160)>
    Property Title As String
    Property Price As Decimal

End Class

But the complier is throwing an error (as shown above). It seems to think that error message is property of album.

What can I do to fix this?

Answer 1

This should be:

<Required(ErrorMessage := "Price is required")> _
<StringLength(160)> _

Check out the VB documentation on attributes for more information.

Answer 2

Public Class Album
    <Required(ErrorMessage := "An Album Title is required")> _
    <StringLength(160)> _
    Public Property Title() As String
        Get
            Return m_Title
        End Get
        Set
            m_Title = Value
        End Set
    End Property
    Private m_Title As String
End Class