C# Com

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<big><b>To create COM+</b></big>

<br />

Create a new c# .net class library project in visual studio 2005

<pre>

1>Open AssemblyInfo.cs  file ()Properties/AssemblyInfo.cs) in VS2005



 Set following option

 [assembly: ComVisible(true)]



 

2> Go to references folder -> right click -> add references (In .Net tab)

Add reference : System.EnterpriseServices 



3)Open a class file (ComPlusClass.cs)

 

   refer Enterprise Service as 

   <ul>using System.EnterpriseServices</ul>

 

Above namespace of this class add following statements:

 

[assembly: ApplicationName("ComPlusExample")]

[assembly:Description("ComPlus Assmebly")]

[assembly:ApplicationActivation(ActivationOption.Server)]

[assembly:ApplicationAccessControl(false)]

 



Create an interface e.g. iINTERFACE

<code>

    public interface iInterface

    {

        int PerformAddition(int a,int b);

        int PerformSubtraction(int a,int b);

    }

 </code>



Create class implementing interfaces 

   i)ServicedComponent

   ii)iINTERFACE 



To track events in COM+ for this class, add following statements as

 

[EventTrackingEnabled(true)]

[Description("Serviced Component")]





  <code>

  [EventTrackingEnabled(true)]

    [Description("Interface Serviced Component")]

    public class ComPlusClass:ServicedComponent,iInterface

    {



        #region iInterface Members



        int iInterface.PerformAddition(int a, int b)

        {

           // throw new Exception("The method or operation is not implemented.");

            try

            {

                return a + b;

            }

            catch

            {

                return 0;

            }

        }



        int iInterface.PerformSubtraction(int a, int b)

        {

            //throw new Exception("The method or operation is not implemented.");

            try

            {

                return a - b;

            }

            catch

            {

                return 0;

            }

        }



        #endregion

    }



  </code>





 4> Build the Application 

Assign strong key to Application using vs 2005 command prompt

//goto start-> program files->visual studio 2005-> visual studio tools ->sdk command prompt



sn -k ComPlusClass.snk

 

Add this strong key to Application Properties -> Signing -> Strong key



 

5>Registering Assembly:

 

Use VS tool to register assembly as

 

regasm ComPlusExample.dll

 

Create Type Library using tool 

 

tlbexp ComPlusExample.dll

 

Register it in COM+ as

 

regsvcs ComPlusExample.dll

 

 

 

To view this registered COM+

 

Go to Control Panel -> Administrative Tools -> Compoent Services

 

In Component Services -> Computers -> My Computer -> Com + Applications

 

Here it is.................................

 

Refer tlb of assembly from Release folder to use in VB6 applications



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