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06.03.2008 at 01:40AM PDT, ID: 23452417
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6.6

How to serialize a class that contains properties of type interface (contract design)

Asked by srexp in .Net Editors & IDEs, .NET Framework 2.x, .NET Framework 3.x versions

Tags:

Hi,

I have a contract based architecture in my software. So most types are implemented via a microkernel and most of the properties and generic list are types of these interfaces.

How can I serialize a class with properties that return an interface. I want to have a xml serialization so that I can edit the file with a texteditor.

Here is an example:

Hope you can help
Thanks
Sascha
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Module Module1
 
    Sub Main()
 
        Dim bmw As New Car
        bmw.Tyres = New List(Of ITyre)
 
        Dim t As ITyre
 
        t = New BigTyre
        t.Size = 14
        bmw.Tyres.Add(t)
        t = New BigTyre
        t.Size = 15
        bmw.Tyres.Add(t)
 
        Dim mem As New IO.MemoryStream
        Console.WriteLine("Here comes an exception that says, that tyre is not serializable because it is an interface")
        Dim ser As New Xml.Serialization.XmlSerializer(GetType(Car))
        ser.Serialize(mem, bmw)
 
        bmw = Nothing
        mem.Position = 0
 
        bmw = ser.Deserialize(mem)
 
        Console.WriteLine("The number of tyres should be 2")
        Console.WriteLine(bmw.Tyres.Count)
 
        Console.ReadLine()
 
    End Sub
 
End Module
 
Public Class Car
 
    Private _tyres As List(Of ITyre)
    Public Property Tyres() As List(Of ITyre)
        Get
            Return _tyres
        End Get
        Set(ByVal value As List(Of ITyre))
            _tyres = value
        End Set
    End Property
 
End Class
 
Public Class BigTyre
    Implements ITyre
 
    Private _size As Double
    Public Property Size() As Double Implements ITyre.Size
        Get
            Return _size
        End Get
        Set(ByVal value As Double)
            _size = value
        End Set
    End Property
 
End Class
 
Public Interface ITyre
 
    Property Size() As Double
 
End Interface
[+][-]06.04.2008 at 04:28AM PDT, ID: 21708889

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[+][-]06.04.2008 at 04:37AM PDT, ID: 21708947

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[+][-]06.04.2008 at 06:46AM PDT, ID: 21710013

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[+][-]06.04.2008 at 07:15AM PDT, ID: 21710310

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[+][-]06.05.2008 at 12:48AM PDT, ID: 21717090

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Zones: .Net Editors & IDEs, .NET Framework 2.x, .NET Framework 3.x versions
Tags: .net
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Solution Provided By: ripahoratiu
Participating Experts: 1
Solution Grade: B
 
 
[+][-]06.05.2008 at 03:06AM PDT, ID: 21717691

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[+][-]06.05.2008 at 03:48AM PDT, ID: 21717892

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[+][-]06.05.2008 at 04:40AM PDT, ID: 21718165

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