如何在服務器端從客戶端恢復System .__ ComObject狀態？

我有客戶端服務器應用程序與WCF服務，我需要發送ComObject，呈現爲COM接口，在某種狀態從客戶端到服務器。 ComObject不可序列化，因此我需要在服務器端創建一個新實例並恢復正確的狀態。如何在服務器端從客戶端恢復System .__ ComObject狀態？

如何獲取客戶端的ComObject狀態並在服務器端創建接口實現實例？

定義ComObject的：COM接口的

public class SyncSessionContext 
{ 
    ... 
    private CoreInterop.ISyncSessionState rawState; 
    ... 
}

定義

internal static class CoreInterop 
{ 
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]   
    [Guid("b8a940fe-9f01-483b-9434-c37d361225d9")] 
    [ComImport] 
    public interface ISyncSessionState 
    { 
     [MethodImpl(MethodImplOptions.InternalCall | MethodImplOptions.PreserveSig, MethodCodeType = MethodCodeType.Runtime)] 
     int GetInfoForChangeApplication([MarshalAs(UnmanagedType.LPArray), In, Out] byte[] ppbChangeApplierInfo, [In, Out] ref uint pcbChangeApplierInfo); 

     ...other methods 
    } 
}

我的客戶端代碼：

public override void BeginSession(SyncProviderPosition position, SyncSessionContext syncSessionContext) 
{ 
    var field = typeof(SyncSessionContext).GetField("rawState", BindingFlags.Instance | BindingFlags.NonPublic); 

    // Nonserializable correct instance 
    var rawState = field.GetValue(syncSessionContext); 

    //extract state... 
    var state = ????? 

    //calling wcf service  
    proxy.BeginSession(position, state); 
}

我的服務器端代碼：

public void BeginSession(SyncProviderPosition position, object state) 
{ 
    //initializing and restoring state   
    var rawState = ????? 

    syncSessionContext = new SyncSessionContext(IdFormats(), null); 
    var field = typeof(SyncSessionContext).GetField("rawState", BindingFlags.Instance | BindingFlags.NonPublic); 
    field.SetValue(syncSessionContext, rawState); 

    KnowledgeSyncProvider.BeginSession(position, syncSessionContext); 
}

來源

2012-07-26 kotlyarovsa