WMP library from windows service Arindam 4/17/2007 2:16:03 PM Hi All, I am making a windows service which needs to access WMP library. My code is like this. using WMPLib; WMPLib.WindowsMediaPlayer Player; IWMPPlaylist mediaPlaylist; Player = new WMPLib.WindowsMediaPlayer(); mediaPlaylist = Player.mediaCollection.getByAttribute("MediaType", "audio"); Now mediaPlaylist.count is giving 0. But my Music library contains 20 files. I have tried this kind of code in a console application, it is working correct there. Is there any restriction imposed on the accessability of WMP library from windows service ( I am running my service as administrator). How to solve this problem? I am using WMP 10 sdk. In the documentation Settings.mediaAccessRights to know the access rights of WMP library and Settings.requestMediaAccessRights to requst the desired access right. But in my code player.settings don't have mediaAccessRights member. I don't know why I am not able to find this member? Thanking you in advance. Regards Arindam

Re: WMP library from windows service "Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 4/17/2007 2:56:37 PM From: "Arindam" [Quoted Text] > I am making a windows service which needs to access WMP > library. [...] > Now mediaPlaylist.count is giving 0. But my Music library > contains 20 files. I have tried this kind of code in a > console application, it is working correct there. The console application by default runs under the same account as the interactive user while services usually run under some system account. Have you configured the service to run under the same account or to impersonate the account in code? -- // Alessandro Angeli // MVP :: DirectShow / MediaFoundation // mvpnews at riseoftheants dot com // http://www.riseoftheants.com/mmx/faq.htm

Re: WMP library from windows service Arindam 4/18/2007 5:58:05 PM Thanks a lot for your reply. I think you are right, my service is running under system account. Today I have done some experements and got some positive results. I am creating my service from VS2005 C# Windows Service wizard. Then I am adding a installer to it.In the installer account type I have set it to NetworkService ( as my service need some network related activities). Then I added a set-up project to it . After installing my service from Administrative Tools->service->my service->property I opend the log on page and logged on as administrator and started the service and it worked correct. [Quoted Text] >Have you configured the service > to run under the same account or to impersonate the account > in code? Still I am not able to cofigure my service programatically to run under a specific user's account. Can you tell me the steps to do it. Thanking you in advance. Regards Arindam "Alessandro Angeli" wrote: > From: "Arindam" > > > I am making a windows service which needs to access WMP > > library. > [...] > > Now mediaPlaylist.count is giving 0. But my Music library > > contains 20 files. I have tried this kind of code in a > > console application, it is working correct there. > > The console application by default runs under the same > account as the interactive user while services usually run > under some system account. Have you configured the service > to run under the same account or to impersonate the account > in code? > > > -- > // Alessandro Angeli > // MVP :: DirectShow / MediaFoundation > // mvpnews at riseoftheants dot com > // http://www.riseoftheants.com/mmx/faq.htm > > > >

Re: WMP library from windows service "Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 4/18/2007 6:24:14 PM From: "Arindam" [Quoted Text] > Still I am not able to cofigure my service > programatically to run under a specific user's account. > Can you tell me the steps to do it. Read the docs for System.ServiceProcess.ServiceAccount.User. If you want to run your service under whatever privileged account and only impersonate a specific user while accessing the user's media library, take a look at System.Security.Principal.WindowsIdentity. -- // Alessandro Angeli // MVP :: DirectShow / MediaFoundation // mvpnews at riseoftheants dot com // http://www.riseoftheants.com/mmx/faq.htm