COM Interop Part 2 Sample

This sample demonstrates how to use a C# server with a C++ COM client.


Visual C++ must be installed to compile this sample.

To get samples and instructions for installing them

  • Do one or more of the following:

    • On the Help menu, click Samples.

      The Readme displays information about samples.

    • Visit the Visual Studio 2008 Samples Web site. The most recent versions of samples are available there.

    • Locate samples on the computer on which Visual Studio is installed. By default, samples and a Readme file are installed in drive:\Program Files\Microsoft Visual Studio 9.0\Samples\lcid. For Express editions of Visual Studio, all samples are located online.

For more information, see Visual Studio Samples.

Security noteSecurity Note:

This sample code is intended to illustrate a concept, and it shows only the code that is relevant to that concept. It may not meet the security requirements for a specific environment, and it should not be used exactly as shown. We recommend that you add security and error-handling code to make your projects more secure and robust. Microsoft provides this sample code "AS IS" with no warranties.

This sample requires that you run the regasm.exe tool. On Windows Vista with the new User Account Control feature (UAC), regasm can only be run if you are logged in as an administrator. For more information about how to develop UAC-compliant applications, see Windows Vista Application Development Requirements for User Account Control Compatibility.

To build and run the COM Interop Part 2 sample within Visual Studio

  1. In Solution Explorer, right-click the COMClient project, and then click Properties.

  2. Open the Configuration Properties folder, and then click Debug.

  3. In the Command Line Arguments property, type a name.

  4. Click OK.

  5. On the Debug menu, click Start Without Debugging.

To build and run the COM Interop Part 2 sample from a command prompt

  1. Use the Change Directory command to change to the COMInteropPart2\COMClient directory.

  2. Copy the C# server code to the COMClient directory:

    copy ..\CSharpServer\CSharpServer.cs
  3. Compile the server:

    csc /target:library CSharpServer.cs
    regasm CSharpServer.dll /tlb:CSharpServer.tlb
  4. Compile the client (make sure that the path and environment variables are set correctly with vcvars32.bat):

    cl COMClient.cpp
  5. Run the client:

    COMClient friend

See Also


Visual C# Samples

C# Programming Guide


Interoperability (C# Programming Guide)