C# : Creating a COM component enabled application

Follow below steps to create COM component enabled application example:

Remember to set below attribute in all the library and project in AssemblyInfo.cs

[assembly: ComVisible(true)]

Create C# project class library: Give its name to CSDLL:

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put below code:

using System;

using System.Collections.Generic;

using System.Text;

namespace MyParcelTracker

{

public class ParcelTracker

{

public string GetDateTime()

{

return DateTime.Now.ToString();

}

public virtual string GetOrderStatus(int ordno)

{

return "Order new Dispatched";

}

}

}


Create VB project class library: Give its name to VBDLL:

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put below code:


Imports System

Imports MyParcelTracker

Public Class VBParcelTracker

Inherits ParcelTracker

Public Overrides Function GetOrderStatus(ByVal ordno As Integer) As String

Return MyBase.GetOrderStatus(ordno)

End Function

End Class


Create a C# concole application which uses both the class library : give its name HelloCOM
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First of all compile both the above libraries and add it as a referece here.

put below code: