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I am trying to create DCOM dll in c# which i want to utilize or call function from other computer using c# and vb6 application

Same i want to create application using VB6 and want to call in .net application from other as well as same computer.

What I have tried:

I want to create sample application using .NET as well as in VB6, and I want to use those application dll from other computer, I have gone through several steps but it's confusing and still not able to find exact working example.

I have created one sample class library project and signed with key imported by following command:

sn.exe -i C:\Test\D\test.snk testD

and on post-build I am importing file tlb from following command:
%SystemRoot%\Microsoft.NET\Framework64\v4.0.30319\RegAsm /codebase "$(TargetPath)" /tlb:"$(TargetDir)$(TargetName).lib"

Now I am able to build project successfully after updating code in AssemblyInfo.cs as follows:

[assembly: ApplicationName("D")] // name space name
[assembly: ApplicationActivation(ActivationOption.Library)]
[assembly: AssemblyKeyFile("test.snk")] // exported key name.

Now I have two files, one dll and one lib file in the bin folder when I build project.

Bow I am confused what to do. How can I access from other computer and how can I create same for VB6.

My project structure as follows
Project Structure

i want to create application which can be installed in different computer also can communicate with each other over network

can any one guide me with steps that how can i create application as well as how can i create setup for the same ?

i have uploaded source code , i am able to create installable config but not able to call from other computer

and this is below my client code with reference

Type remoteSessionContextType = Type.GetTypeFromProgID("D.Person", "", true);
var dcomObject = Activator.CreateInstance(remoteSessionContextType);
string version = dcomObject.ToString();

i am getting error as below.

etrieving the COM class factory for component with CLSID {000209FF-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).
Updated 3-Jan-20 2:08am
F-ES Sitecore 31-Dec-19 13:44pm    
You have to implement COM if you want it used by VB6. Google how to create a COM object in c# and you'll find lots of walkthroughs of all the steps.
Viken Patel 1-Jan-20 0:29am    
yes but i want to create dll which can be called from other machine also i am looking for that solution , if i create dll in COMPUTER A using either vb6 or c# application, which can be called from COMPUTER B.
F-ES Sitecore 1-Jan-20 15:11pm    
If you create it as a COM object you can register it as a DCOM object on the client machine which will allow the object to be created on a different computer.

1 solution

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