C# DvInvocation类代码示例

 private static int DoProduct(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgProduct1 self = (DvProviderAvOpenhomeOrgProduct1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string room;
     string name;
     string info;
     string url;
     string imageUri;
     try
     {
         invocation.ReadStart();
         invocation.ReadEnd();
         self.Product(invocation, out room, out name, out info, out url, out imageUri);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "Product");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", new object[] { "Product" }));
         return -1;
     }
     catch (Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "Product" });
         System.Diagnostics.Debug.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("Room", room);
         invocation.WriteString("Name", name);
         invocation.WriteString("Info", info);
         invocation.WriteString("Url", url);
         invocation.WriteString("ImageUri", imageUri);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "Product" });
         System.Diagnostics.Debug.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoSetVolumeDB(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgRenderingControl2 self = (DvProviderUpnpOrgRenderingControl2)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint instanceID;
     string channel;
     int desiredVolume;
     try
     {
         invocation.ReadStart();
         instanceID = invocation.ReadUint("InstanceID");
         channel = invocation.ReadString("Channel");
         desiredVolume = invocation.ReadInt("DesiredVolume");
         invocation.ReadEnd();
         self.SetVolumeDB(invocation, instanceID, channel, desiredVolume);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "SetVolumeDB");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "SetVolumeDB"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "SetVolumeDB", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "SetVolumeDB", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoGetProtocolInfo(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgConnectionManager1 self = (DvProviderUpnpOrgConnectionManager1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string source;
     string sink;
     try
     {
         invocation.ReadStart();
         invocation.ReadEnd();
         self.GetProtocolInfo(invocation, out source, out sink);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "GetProtocolInfo");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", new object[] { "GetProtocolInfo" }));
         return -1;
     }
     catch (Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "GetProtocolInfo" });
         System.Diagnostics.Debug.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("Source", source);
         invocation.WriteString("Sink", sink);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "GetProtocolInfo" });
         System.Diagnostics.Debug.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoGetMediaInfo(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgAVTransport1 self = (DvProviderUpnpOrgAVTransport1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint instanceID;
     uint nrTracks;
     string mediaDuration;
     string currentURI;
     string currentURIMetaData;
     string nextURI;
     string nextURIMetaData;
     string playMedium;
     string recordMedium;
     string writeStatus;
     try
     {
         invocation.ReadStart();
         instanceID = invocation.ReadUint("InstanceID");
         invocation.ReadEnd();
         self.GetMediaInfo(invocation, instanceID, out nrTracks, out mediaDuration, out currentURI, out currentURIMetaData, out nextURI, out nextURIMetaData, out playMedium, out recordMedium, out writeStatus);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "GetMediaInfo");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "GetMediaInfo"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "GetMediaInfo", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteUint("NrTracks", nrTracks);
         invocation.WriteString("MediaDuration", mediaDuration);
         invocation.WriteString("CurrentURI", currentURI);
         invocation.WriteString("CurrentURIMetaData", currentURIMetaData);
         invocation.WriteString("NextURI", nextURI);
         invocation.WriteString("NextURIMetaData", nextURIMetaData);
         invocation.WriteString("PlayMedium", playMedium);
         invocation.WriteString("RecordMedium", recordMedium);
         invocation.WriteString("WriteStatus", writeStatus);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "GetMediaInfo", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoGetTransportSettings(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgAVTransport1 self = (DvProviderUpnpOrgAVTransport1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint instanceID;
     string playMode;
     string recQualityMode;
     try
     {
         invocation.ReadStart();
         instanceID = invocation.ReadUint("InstanceID");
         invocation.ReadEnd();
         self.GetTransportSettings(invocation, instanceID, out playMode, out recQualityMode);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "GetTransportSettings");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "GetTransportSettings"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "GetTransportSettings", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("PlayMode", playMode);
         invocation.WriteString("RecQualityMode", recQualityMode);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "GetTransportSettings", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoDestroyObject(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgContentDirectory2 self = (DvProviderUpnpOrgContentDirectory2)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string objectID;
     try
     {
         invocation.ReadStart();
         objectID = invocation.ReadString("ObjectID");
         invocation.ReadEnd();
         self.DestroyObject(invocation, objectID);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "DestroyObject");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "DestroyObject"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "DestroyObject", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "DestroyObject", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoPlaylistInsert(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgPlaylistManager1 self = (DvProviderAvOpenhomeOrgPlaylistManager1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint afterId;
     string name;
     string description;
     uint imageId;
     uint newId;
     try
     {
         invocation.ReadStart();
         afterId = invocation.ReadUint("AfterId");
         name = invocation.ReadString("Name");
         description = invocation.ReadString("Description");
         imageId = invocation.ReadUint("ImageId");
         invocation.ReadEnd();
         self.PlaylistInsert(invocation, afterId, name, description, imageId, out newId);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "PlaylistInsert");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "PlaylistInsert"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "PlaylistInsert", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteUint("NewId", newId);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "PlaylistInsert", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoReadList(IntPtr aPtr, IntPtr aInvocation, uint aVersion)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgPlaylist1 self = (DvProviderAvOpenhomeOrgPlaylist1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string idList;
     string trackList;
     try
     {
         invocation.ReadStart();
         idList = invocation.ReadString("IdList");
         invocation.ReadEnd();
         self.ReadList(aVersion, idList, out trackList);
     }
     catch (ActionError)
     {
         invocation.ReportError(501, "Invalid XML");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, "Invalid XML");
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2}", e.GetType(), e.Message, e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError can be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("TrackList", trackList);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2}", e.GetType(), e.Message, e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
         System.Diagnostics.Process.GetCurrentProcess().Kill();
     }
     return 0;
 }

 private static int DoStatus(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgSender1 self = (DvProviderAvOpenhomeOrgSender1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string value;
     try
     {
         invocation.ReadStart();
         invocation.ReadEnd();
         self.Status(invocation, out value);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "Status");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", new object[] { "Status" }));
         return -1;
     }
     catch (Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "Status" });
         System.Diagnostics.Debug.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("Value", value);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "Status" });
         System.Diagnostics.Debug.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoGetProtocolInfo(IntPtr aPtr, IntPtr aInvocation, uint aVersion)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgConnectionManager1 self = (DvProviderUpnpOrgConnectionManager1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string source;
     string sink;
     try
     {
         invocation.ReadStart();
         invocation.ReadEnd();
         self.GetProtocolInfo(aVersion, out source, out sink);
     }
     catch (ActionError)
     {
         invocation.ReportError(501, "Invalid XML");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, "Invalid XML");
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2}", e.GetType(), e.Message, e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError can be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("Source", source);
         invocation.WriteString("Sink", sink);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2}", e.GetType(), e.Message, e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
         System.Diagnostics.Process.GetCurrentProcess().Kill();
     }
     return 0;
 }

 private static int DoPrepareForConnection(IntPtr aPtr, IntPtr aInvocation, uint aVersion)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgConnectionManager1 self = (DvProviderUpnpOrgConnectionManager1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     string remoteProtocolInfo;
     string peerConnectionManager;
     int peerConnectionID;
     string direction;
     int connectionID;
     int aVTransportID;
     int rcsID;
     try
     {
         invocation.ReadStart();
         remoteProtocolInfo = invocation.ReadString("RemoteProtocolInfo");
         peerConnectionManager = invocation.ReadString("PeerConnectionManager");
         peerConnectionID = invocation.ReadInt("PeerConnectionID");
         direction = invocation.ReadString("Direction");
         invocation.ReadEnd();
         self.PrepareForConnection(aVersion, remoteProtocolInfo, peerConnectionManager, peerConnectionID, direction, out connectionID, out aVTransportID, out rcsID);
     }
     catch (ActionError)
     {
         invocation.ReportError(501, "Invalid XML");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, "Invalid XML");
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2}", e.GetType(), e.Message, e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError can be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteInt("ConnectionID", connectionID);
         invocation.WriteInt("AVTransportID", aVTransportID);
         invocation.WriteInt("RcsID", rcsID);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2}", e.GetType(), e.Message, e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
         System.Diagnostics.Process.GetCurrentProcess().Kill();
     }
     return 0;
 }

 private static int DoDetails(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgInfo1 self = (DvProviderAvOpenhomeOrgInfo1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint duration;
     uint bitRate;
     uint bitDepth;
     uint sampleRate;
     bool lossless;
     string codecName;
     try
     {
         invocation.ReadStart();
         invocation.ReadEnd();
         self.Details(invocation, out duration, out bitRate, out bitDepth, out sampleRate, out lossless, out codecName);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "Details");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "Details"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "Details", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteUint("Duration", duration);
         invocation.WriteUint("BitRate", bitRate);
         invocation.WriteUint("BitDepth", bitDepth);
         invocation.WriteUint("SampleRate", sampleRate);
         invocation.WriteBool("Lossless", lossless);
         invocation.WriteString("CodecName", codecName);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "Details", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoCounters(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgInfo1 self = (DvProviderAvOpenhomeOrgInfo1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint trackCount;
     uint detailsCount;
     uint metatextCount;
     try
     {
         invocation.ReadStart();
         invocation.ReadEnd();
         self.Counters(invocation, out trackCount, out detailsCount, out metatextCount);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "Counters");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "Counters"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "Counters", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteUint("TrackCount", trackCount);
         invocation.WriteUint("DetailsCount", detailsCount);
         invocation.WriteUint("MetatextCount", metatextCount);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "Counters", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoSource(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderAvOpenhomeOrgProduct1 self = (DvProviderAvOpenhomeOrgProduct1)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint index;
     string systemName;
     string type;
     string name;
     bool visible;
     try
     {
         invocation.ReadStart();
         index = invocation.ReadUint("Index");
         invocation.ReadEnd();
         self.Source(invocation, index, out systemName, out type, out name, out visible);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "Source");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", new object[] { "Source" }));
         return -1;
     }
     catch (Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "Source" });
         System.Diagnostics.Debug.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("SystemName", systemName);
         invocation.WriteString("Type", type);
         invocation.WriteString("Name", name);
         invocation.WriteBool("Visible", visible);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         System.Diagnostics.Debug.WriteLine("WARNING: unexpected exception {0} thrown by {1}", new object[] { e, "Source" });
         System.Diagnostics.Debug.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }

 private static int DoGetTransferProgress(IntPtr aPtr, IntPtr aInvocation)
 {
     GCHandle gch = GCHandle.FromIntPtr(aPtr);
     DvProviderUpnpOrgContentDirectory2 self = (DvProviderUpnpOrgContentDirectory2)gch.Target;
     DvInvocation invocation = new DvInvocation(aInvocation);
     uint transferID;
     string transferStatus;
     string transferLength;
     string transferTotal;
     try
     {
         invocation.ReadStart();
         transferID = invocation.ReadUint("TransferID");
         invocation.ReadEnd();
         self.GetTransferProgress(invocation, transferID, out transferStatus, out transferLength, out transferTotal);
     }
     catch (ActionError e)
     {
         invocation.ReportActionError(e, "GetTransferProgress");
         return -1;
     }
     catch (PropertyUpdateError)
     {
         invocation.ReportError(501, String.Format("Invalid value for property {0}", "GetTransferProgress"));
         return -1;
     }
     catch (Exception e)
     {
         Console.WriteLine("WARNING: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "GetTransferProgress", e.TargetSite.Name);
         Console.WriteLine("         Only ActionError or PropertyUpdateError should be thrown by actions");
         return -1;
     }
     try
     {
         invocation.WriteStart();
         invocation.WriteString("TransferStatus", transferStatus);
         invocation.WriteString("TransferLength", transferLength);
         invocation.WriteString("TransferTotal", transferTotal);
         invocation.WriteEnd();
     }
     catch (ActionError)
     {
         return -1;
     }
     catch (System.Exception e)
     {
         Console.WriteLine("ERROR: unexpected exception {0}(\"{1}\") thrown by {2} in {3}", e.GetType(), e.Message, "GetTransferProgress", e.TargetSite.Name);
         Console.WriteLine("       Only ActionError can be thrown by action response writer");
     }
     return 0;
 }