ASP invoke COM component Instance compiled by C #

1 new Class library Mytestdll





2 Right-click Project "Mytestdll"-"Properties-" Generate-"Check for COM Interop registration"





3 Open AssemblyInfo.cs file modification [Assembly:comvisible (true)]





4 Open the Visual Sutdio 2008 Command Prompt line tool input Guidgen.exe Select Define_guid Click New GUID





5 Code





1, each class name corresponds to an interface name, the interface name is the class name preceded by an uppercase I





2, the method declared in the interface uses the attribute [DispId (n)]





3, the class must have a parameterless constructor








Code


using System;


using System.Collections.Generic;


using System.Linq;


using System.Text;


Using System.Runtime.InteropServices;


namespace Mytestdll


{ 





//Here the GUID is generated for step 4th.


[Guid ("ffa4b191-fb5b-4dd5-b7b1-b2f32bf6f1ff")]


public Interface Imytestdll


    { 


[DispId (0)]


string Getabout ();


    } 


public class Test1:imytestdll


    { 


PRivate String Summary;


public Test1 ()


{ 


Summary = "This is my first Test";


        } 


public String getabout ()


        { 


return summary;


        } 


    } 


} 





  





6 Build Project





ASP Test Code





<%


Dim o


Set o = Server.CreateObject ("Mytestdll.test1")


Response.Write O.getabout ()


Set o=nothing


   


%>





tip: If you want to use the COM component that we developed with C # on other computers, we still need to register with RegAsm




The
method is:





first copy the files of the Bindebug directory to the target computer, and then open the command prompt line tool input:


regasm you copy to the directory/filename. dll/tlb f:/dll/filename. tlb/codebase





running can be used on this computer.