calling COM component from WebService

07-16-2007 4:18 AM |

Hi,

can anybody tell me the procedure of calling COM component from WebService.i tried by creating a proxy, but it is displaying the message SOAP exception, any idea whts the problem????

Re: calling COM component from WebService

07-16-2007 4:52 AM |

Can you provide more explanation,  What is the SOAP exception? Is the web service at the same domain as your silverlight application or in another domain?

Re: Re: calling COM component from WebService

07-16-2007 5:16 AM |

System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID {A81CDE91-0F79-11D3-939E-004033E0AB6A} failed due to the following error: 80070005.
  at WebService1.Service1.HelloWorld() in c:\inetpub\servicecom6\WebService1\Service1.asmx.cs:line 42
  --- End of inner exception stack trace ---

this is the error message i m getting, Actually, i was able to call webservice from SL Project, that web service was just returning HelloWorld Message, but when i included a COM component call in this web service, i got this error, i created a proxy for the COM component also n tried to call the COM interfaces through this proxy..

thanx.

Re: Re: calling COM component from WebService

07-16-2007 5:28 AM |

This error indicates that ASP .NET does not have the priviliges to access this resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6)

Re: Re: calling COM component from WebService

07-16-2007 5:32 AM |

And here is a link to an ASP.NET forum thread that discusses this issue

http://forums.asp.net/p/992028/1291146.aspx