C# COM Server

[Thomas Diggelmann]

Hi

As a beginner with JACOB I tried first the following code:

import com.jacob.com.*;
import com.jacob.activeX.*;

public class ComTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
         ActiveXComponent xl = new ActiveXComponent("Excel.Application");       
        Object xlo = xl.getObject();
       
        try {
          System.out.println("version="+xl.getProperty("Version"));
        } catch (Exception e) {
          e.printStackTrace();
        } finally {
          xl.invoke("Quit", new Variant[] {});
        }

    }
}

These will work with out a problem, also other calls to office libraries.

Then I tried to use a COM server written in C# and .Net Framework 2.0: the COM-Interop Part 2 sample from VS2008. Calling the COM from C++ as in the sample is no problem, but from JACOB I get an error:

Exception in thread "main" com.jacob.com.ComFailException: Can't co-create object
    at com.jacob.com.Dispatch.createInstanceNative(Native Method)
    at com.jacob.com.Dispatch.<init>(Dispatch.java:101)
    at com.jacob.activeX.ActiveXComponent.<init>(ActiveXComponent.java:58)
    at de.IPSysteme.thd.test.ComTest.main(ComTest.java:28)

What is wrong?

[Thomas Diggelmann]

The solution was not so hard:
.Net COM objects have to be local or in the GAC...