Interop Events
in [CSharp]
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From: Stryker.Ninja on 26 Jul 2006 16:03 First time poster, please be gentle :P I am using a third party ocx control in a C# 2.0 application. The interop seems to be working fine except for events. When I try and attach an event, it only succeeds for one event at a time. Examples: // works by itself OCXClass.Event1 += new OCXClass.EventHandler(Event1_Sub); // second call fails OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); // works, but Event 2 is only thing available OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); OCXClass.Event1 -= new OCXClass.Event1Handler(Event1_Sub); OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); Has anyone seen this type of behavior before? thanks in advance for any tips.
From: Dave Sexton on 27 Jul 2006 01:44 Hi Stryker, > // second call fails > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); By "fails" do you mean that an Exception is thrown? If so I'd assume that the error has to do with an implementation detail of the control and since the control is third-party it's hard to say what could actually be happening. Post the error if you can. You might want to contact the control's vendor or creator on this one. -- Dave Sexton <Stryker.Ninja(a)gmail.com> wrote in message news:1153944207.436565.9670(a)b28g2000cwb.googlegroups.com... > First time poster, please be gentle :P > > I am using a third party ocx control in a C# 2.0 application. The > interop seems to be working fine except for events. When I try and > attach an event, it only succeeds for one event at a time. Examples: > > // works by itself > OCXClass.Event1 += new OCXClass.EventHandler(Event1_Sub); > > // second call fails > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); > > // works, but Event 2 is only thing available > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); > OCXClass.Event1 -= new OCXClass.Event1Handler(Event1_Sub); > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); > > Has anyone seen this type of behavior before? thanks in advance for > any tips. >
From: Stryker on 27 Jul 2006 09:10 Thanks Dave, I did mean exception thrown. Here it is: [System.Runtime.InteropServices.COMException] = {"Exception from HRESULT: 0x80040202"} StackTrace = " at System.Runtime.InteropServices.ComTypes.IConnectionPoint.Advise(Object pUnkSink, Int32& pdwCookie)\r\n at WTReaderNet.ILRXReaderNetXEvents_EventProvider.add_OnTagMovedReader(ILRXReaderNetXEvents_OnTagMovedReaderEventHandler )\r\n at WTReaderNet.L... I kind of thought it was too generic to post. I have contacted the vendor with no response yet, but I have a feeling it will be "we don't support .Net implementation" since the examples they give are all in VB6. I was kind of hoping that interop was to blame, and that someone else had seen a similar problem and had a workaround. Dave Sexton wrote: > Hi Stryker, > > > // second call fails > > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); > > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); > > By "fails" do you mean that an Exception is thrown? If so I'd assume that the error has to do with an implementation detail of the > control and since the control is third-party it's hard to say what could actually be happening. Post the error if you can. You > might want to contact the control's vendor or creator on this one. > > -- > Dave Sexton > > <Stryker.Ninja(a)gmail.com> wrote in message news:1153944207.436565.9670(a)b28g2000cwb.googlegroups.com... > > First time poster, please be gentle :P > > > > I am using a third party ocx control in a C# 2.0 application. The > > interop seems to be working fine except for events. When I try and > > attach an event, it only succeeds for one event at a time. Examples: > > > > // works by itself > > OCXClass.Event1 += new OCXClass.EventHandler(Event1_Sub); > > > > // second call fails > > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); > > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); > > > > // works, but Event 2 is only thing available > > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); > > OCXClass.Event1 -= new OCXClass.Event1Handler(Event1_Sub); > > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); > > > > Has anyone seen this type of behavior before? thanks in advance for > > any tips. > >
From: Dave Sexton on 27 Jul 2006 15:53 Hi Styrker, Postng the error info did the trick. I searched for "HRESULT 0x80040202" on groups.google.com and found the following thread that seems to address your issue (first of the results): http://groups.google.com/group/microsoft.public.dotnet.languages.csharp/browse_frm/thread/62fe9e0a42604e49/b0924eaec54e3a5b?lnk=st&q=&rnum=1#b0924eaec54e3a5b HTH -- Dave Sexton "Stryker" <Stryker.Ninja(a)gmail.com> wrote in message news:1154005804.255353.131760(a)i3g2000cwc.googlegroups.com... > Thanks Dave, > > I did mean exception thrown. Here it is: > > [System.Runtime.InteropServices.COMException] = {"Exception from > HRESULT: 0x80040202"} > StackTrace = " at > System.Runtime.InteropServices.ComTypes.IConnectionPoint.Advise(Object > pUnkSink, Int32& pdwCookie)\r\n at > WTReaderNet.ILRXReaderNetXEvents_EventProvider.add_OnTagMovedReader(ILRXReaderNetXEvents_OnTagMovedReaderEventHandler > )\r\n at WTReaderNet.L... > > I kind of thought it was too generic to post. > > I have contacted the vendor with no response yet, but I have a feeling > it will be "we don't support .Net implementation" since the examples > they give are all in VB6. I was kind of hoping that interop was to > blame, and that someone else had seen a similar problem and had a > workaround. > > Dave Sexton wrote: >> Hi Stryker, >> >> > // second call fails >> > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); >> > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); >> >> By "fails" do you mean that an Exception is thrown? If so I'd assume that the error has to do with an implementation detail of >> the >> control and since the control is third-party it's hard to say what could actually be happening. Post the error if you can. You >> might want to contact the control's vendor or creator on this one. >> >> -- >> Dave Sexton >> >> <Stryker.Ninja(a)gmail.com> wrote in message news:1153944207.436565.9670(a)b28g2000cwb.googlegroups.com... >> > First time poster, please be gentle :P >> > >> > I am using a third party ocx control in a C# 2.0 application. The >> > interop seems to be working fine except for events. When I try and >> > attach an event, it only succeeds for one event at a time. Examples: >> > >> > // works by itself >> > OCXClass.Event1 += new OCXClass.EventHandler(Event1_Sub); >> > >> > // second call fails >> > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); >> > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); >> > >> > // works, but Event 2 is only thing available >> > OCXClass.Event1 += new OCXClass.Event1Handler(Event1_Sub); >> > OCXClass.Event1 -= new OCXClass.Event1Handler(Event1_Sub); >> > OCXClass.Event2 += new OCXClass.Event2Handler(Event2_Sub); >> > >> > Has anyone seen this type of behavior before? thanks in advance for >> > any tips. >> > >
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