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COM Interop Part 2 Sample 

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This sample demonstrates using a C# server with a C++ COM client.


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

Security noteSecurity Note

This sample code is provided to illustrate a concept and should not be used in applications or Web sites, as it may not illustrate the safest coding practices. Microsoft assumes no liability for incidental or consequential damages should the sample code be used for purposes other than as intended.

To open the sample file in Solution Explorer

  1. Click Download Sample.

    The File Download message box appears.

  2. Click Open, and on the left column of the zip folder window, click Extract all files.

    The Extraction Wizard opens.

  3. Click Next. You can change the directory that the files will be extracted to, and then click Next again.

    Make sure that the Show extracted files check box is selected, and click Finish.

  4. Double-click the sample's .sln file.

    The sample solution is displayed in Solution Explorer. You might get a security warning that says the solution location is not trusted. Click OK to continue.

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

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

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

  3. In the Command Line Arguments property, enter 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 the command line

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

  2. Copy the C# server code into 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 the path and environment variables are set properly with vcvars32.bat):

    cl COMClient.cpp
  5. Run the client:

    COMClient friend

See Also