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    <p>OK I found the solution and I'll write it here for the common good.</p> <ol> <li> Start VS2010 as administrator. </li> <li> Open a class library project (exmaple - MyProject). </li> <li> Add a new interface to the project (see example below). </li> <li> Add a <code>using System.Runtime.InteropServices;</code> to the file <li> Add the attributes InterfaceType, Guid to the interface. </li> <li> You can generate a Guid using Tools->Generate GUID (option 4).</li> <li> Add a class that implement the interface. </li> <li> Add the attributes ClassInterface, Guid, ProgId to the interface.<br/> ProgId convention is {namespace}.{class} </li> <li> Under the Properties folder in the project in the AssemblyInfo file set ComVisible to true. </li> <li> In the project properties menu, in the build tab mark "Register for COM interop" <li> Build the project </ol> <p>now you can use your COM object by using it's ProgID.</p> <p>example: the C# code:</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace Launcher { [InterfaceType(ComInterfaceType.InterfaceIsDual), Guid("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX")] public interface ILauncher { void launch(); } [ClassInterface(ClassInterfaceType.None), Guid("YYYYYYYY-YYYY-YYYY-YYYY-YYYYYYYYYYY"), ProgId("Launcher.Launcher")] public class Launcher : ILauncher { private string path = null; public void launch() { Console.WriteLine("I launch scripts for a living."); } } } </code></pre> <p>and VB script using the COM:</p> <p><code> set obj = createObject("PSLauncher.PSLauncher") obj.launch() </code></p> <p>and the output will be:</p> <p>I launch scripts for a living</p>
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    1. POHow do I create an ActiveX control (COM) in C#?
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    1. COAdditionally, if you built the assembly and are having trouble using it: ("Could not create object" error) http://stackoverflow.com/questions/1208180/classic-asp-using-com-on-x64-windows-server-2008-and-iis7 http://stackoverflow.com/questions/1281052/classic-asp-using-com-net-interop-64-bit-windows-server-2008-iis-7-server-crea/1343271#1343271
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      1. USZachary Yates
 

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