>You're right. And I checked, that is true for the using construct as well.
>
>Michel should try something like
>
>

>Using usingObject = New System.ServiceModel.OperationContextScope(loMyService.InnerChannel)
>      loSOAPSVC.oOperationContextScope = usingObject
>      .
>      .
>end using
>

Don't think that's save. usingObject will be disposed when the using block exits and any subsequent use of loSOAPSVC.oOperationContextScope will be unsafe. I'd favour having SOAPSVC implement IDisposable. Something like:

Public Class SOAPSVC
    Implements IDisposable

    Public Property OperationContext() As OperationContext
        Get
            Return m_OperationContext
        End Get
        Set(value As OperationContext)
            m_OperationContext = value
        End Set
    End Property
    Private m_OperationContext As OperationContext


    Private isDisposed As Boolean = False

    Public Sub Dispose() Implements IDisposable.Dispose
        Dispose(True)
        GC.SuppressFinalize(Me)
    End Sub


    Protected Overridable Sub Dispose(disposing As Boolean)
        If Not isDisposed Then
            If disposing Then
                ' This ensures the contained object is disposed in a timely way
                Me.OperationContext.Dispose()
                isDisposed = True
            End If
        End If
    End Sub

    Protected Overrides Sub Finalize()
        Try
             Dispose(False)
        Finally
            MyBase.Finalize()
        End Try
    End Sub
End Class

then just using:

        Using svc As New SOAPSVC
            svc.OperationContext = New OperationContext
        End Using