.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Issues with COM Interop

Posted By:      Posted Date: October 08, 2010    Points: 0   Category :.NET Framework
Currently facing an unusual issue. I have a .NET application accessing COM+ dlls which are configured as Server Library via Interop. They are VC++ dlls. We are explicitly calling Marshal.Releasecomobject wherever we are using COM object.

Whenever we exit the application and log off from the server and log in and start the app, the application hangs. Only when we kill the dllhost.exe the app starts working again.

Currently we have the COM+ components configured with admin user account as localsystem account also gave us similar problems. Not sure what needs to be done. Would appreciate if anyone can throw some light.


View Complete Post

More Related Resource Links

JBOSS webservice WCF client interop issues



i'm working to integrate those technologies but i'm having some serious issues to do so.

Ive try everything to make this work but can't figure it out how to make it work.

I already started a post http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/8ddeee00-8d81-4071-a934-2be9bb2669a2 about some problem it came out.

The thing is that i already search all over google and found nothing that can really help me.

I would need some advice from someone who knows JBOSS too, the solutions i found apply to IIS mostly ... but is not my case.

Any help would be appreciated.

issues with Microsoft.Office.Interop.Excel in asp.net throwing Exception from HRESULT: 0x800A03EC


i m using Microsoft.Office.Interop.Excel in asp.net for Excel file as anEmail attachment .

i get the data and write to Excel but when i try to save like:

oWB.SaveAs(strCurrentDir +strFile, Microsoft.Office.Interop.Excel.


XlFileFormat.xlWorkbookNormal, null,

COM Interop in C# 4.0

Let's take a bit of a recap of how far we've come. We've chatted about dynamic binding in C# and how that all plays in with the DLR, and about named and optional arguments and how they change the way methods are bound. The only other major piece in C# 4.0 is this notion of COM interop. We chatted about how dynamic really is a gateway to interop with different object models and languages (ie interacting with dynamic languages, dynamic object models, javascript objects, HTML DOM etc), but in C# 4.0, we want to go a bit further and provide you a few more tools to help make your interop life much easier.

IE 8 Issues with Chinese/Japanese Characters


On my web application, I display information in different languages. Everything works fine in IE compatibility mode and FireFox but it shows boxes for chinese/japanese languages. I am pretty much having the same issue as described here



Thanks for your help.

Excel Interop Save as



I want to Save excel workbook using Excel interop in 97-2003 format. Currently I have Office 2007 installed on my machine.

below is the code I am using.

_book.SaveAs("New.xls", Excel.XlFileFormat.xlWorkbookDefault, Missing.Value, Missing.Value, false, false, Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

The solution is little urgent.


.NET Interop: Automate Acceptance Testing With IronRuby


Acceptance testing verifies that the system under development meets the customer's requirements. Learn the benefits here.

Ben Hall

MSDN Magazine March 2009

.NET Interop: Getting Started With IronRuby And RSpec, Part 1


See how IronRuby lets you employ the straightforward Ruby language to create acceptance tests that interoperate with .NET-compliant code.

Ben Hall

MSDN Magazine February 2009

Visual Studio OBA Tools: Simplify OBA Development With Interop API Extensions


To introduce you to VSTO Power Tools Office interop API extensions, we'll walk through the development of an application that automates Outlook, Excel, and Word.

Andrew Whitechapel, Phillip Hoff, and Vladimir Morozov

MSDN Magazine December 2008

Concurrency: Tools And Techniques to Identify Concurrency Issues


Efficient parallel applications aren't born by merely running an old app on a parallel processor machine. Tuning needs to be done if you're to gain maximum benefit.

Rahul V. Patil and Boby George

MSDN Magazine June 2008

Interop: Connect To Mainframe Apps With BizTalk Adapters and .NET


If you have a significant investment in legacy COBOL applications running on mainframes, you need the BizTalk Adapters for Host Integration Server .

Bashar "Bash" Badawi

MSDN Magazine December 2007

CLR Inside Out: Introduction to COM Interop


The CLR allows seamless interactions between Microsoft .NET applications and COM. But how, exactly? The CLR team knows.

Thottam R. Sriram

MSDN Magazine January 2007

CLR Inside Out: Investigating Memory Issues


Memory issues can manifest in a wide variety of ways. This column shows you how to collect the data you need to determine what types of mem¬ory issues you are experiencing.

Claudio Caldato and Maoni Stephens

MSDN Magazine November 2006

Interop: Get Seamless .NET Exception Logging From COM Clients Without Modifying Your Code


Using .NET objects from ASP can help you gain experience with the .NET Framework before migrating to ASP.NET. Your ASP pages will make use of the new .NET components through COM-callable wrappers (CCW). But how will you handle exceptions? This article fills you in.

Matt Adamson

MSDN Magazine January 2005

Stress Testing: Custom LoadGenerator Tool Identifies the Issues Your Application Faces Under Stress


It's easy to postpone stress testing when developing an application, and it's easy to forgo it altogether. Having an easy-to-use framework at your fingertips to conduct these tests can make the task far less painful. This article walks you through an application that eases the task of generating load for a variety of layers within an application.

Brian Otto

MSDN Magazine April 2004

.NET Remoting: Create a Custom Marshaling Implementation Using .NET Remoting and COM Interop


The .NET Framework offers several methods for customizing the presentation of native .NET and COM object types. One such technique, custom marshaling, refers to the notion of specializing object type presentations. There are times, like when a legacy COM component needs to implement a new interface or when you need to make calls across process or machine boundaries, when custom marshaling saves the day. Elements of COM Interop permit the customizing of COM types while .NET Remoting offers the developer the ability to tailor native .NET types. This article examines these techniques.

Jim Sievert

MSDN Magazine September 2003

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend