Create an ActiveX using a Csharp Usercontrol

This article is about creating ActiveX controls using a DotNet Usercontrol in Csharp. You can design all ActiveX features like: properties, methods and events.

Environment:  Visual Studio(2005) Csharp

How to Do This

1. Create a Usercontrol using Visual Studio (C#):

2. Configure the project properties:

3. Modify the usercontrol interface:

Note: Make sur you added the EVENTS class:   [ClassInterface(ClassInterfaceType.AutoDual), ComSourceInterfaces(typeof(UserControlEvents))]
using System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Drawing;
using
System.Data;
using
System.Text;
using
System.Windows.Forms;
// Add references
using System.Runtime.InteropServices;
using
System.Reflection;
using Microsoft.Win32;

namespace CsharpWindowsActiveX
{

            [ProgId("CsharpWindowsActiveX.ActiveXUserControl")]
            [
ClassInterface(ClassInterfaceType.AutoDual), ComSourceInterfaces(typeof(UserControlEvents))]

            public partial class ActiveXUserControl : UserControl
           
{

                    public ActiveXUserControl()
                    {
                         InitializeComponent();
                    }

                     .....

 

4. Add the register/unregister section in the source code

// register COM ActiveX object

[ComRegisterFunction()]
public static void RegisterClass(string key)
{
               StringBuilder skey = new StringBuilder(key);
              skey.Replace(
@"HKEY_CLASSES_ROOT\", "");
             
RegistryKey regKey = Registry.ClassesRoot.OpenSubKey(skey.ToString(), true);
             
RegistryKey ctrl = regKey.CreateSubKey("Control");
             ctrl.Close();
             
RegistryKey inprocServer32 = regKey.OpenSubKey("InprocServer32", true);
              inprocServer32.SetValue(
"CodeBase", Assembly.GetExecutingAssembly().CodeBase);
              inprocServer32.Close();
              regKey.Close();
}


[ComUnregisterFunction()]
public static void UnregisterClass(string key)
{
              
StringBuilder skey = new StringBuilder(key);
               skey.Replace(
@"HKEY_CLASSES_ROOT\", "");
              
RegistryKey regKey = Registry.ClassesRoot.OpenSubKey(skey.ToString(), true);
               regKey.DeleteSubKey(
"Control", false);
              
RegistryKey inprocServer32 = regKey.OpenSubKey("InprocServer32", true);
               regKey.DeleteSubKey(
"CodeBase", false);
               regKey.Close();
}

 

 

5. Add an ActiveX property:

// ActiveX properties (Get/Set) //////////////////////////////////////////////////////////////////

private int ptextVal;
public int TextVal
{
      
get
       {
                  ptextVal = (
int)(numericUpDown1.Value);
                 
return ptextVal;
        }
       
se
t
       {

            ptextVal = value;
                numericUpDown1.Value = ptextVal;
         }
}

 

 

 

6. Add an ActiveX method:

// ActiveX methods/functions //////////////////////////////////////////////////////////////////

public interface ICOMCallable


{
            
int GetTextBoxValue();
}

public int GetTextBoxValue()
{
            
int i = (int)(numericUpDown1.Value);
            
MessageBox.Show("ActiveX method: GetTextBoxValue " + i.ToString());
            
return (i);
}

 

 

7. Add an ActiveX event:

// Eventhandler interface //////////////////////////////////////////////////////////////////
 

public delegate void ControlEventHandler(int NumVal);
[Guid("0A415E38-372F-45fb-813B-D9558C787EA0")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
 

public interface UserControlEvents
{
               [DispId(0x60020001)]
               void OnButtonClick(int NumVal);
}
 

public event ControlEventHandler OnButtonClick;
 

private void buttonOK_Click(object sender, EventArgs e)
{

        int NumVal;
        if (OnButtonClick != null)
        {
                 NumVal = (int)(numericUpDown1.Value);
                 OnButtonClick(NumVal);
         }
}

 

 

 

8. Register the ActiveX on your PC:

Register the new ActiveX on your computer using the command:  RegAsm.exe CsharpWindowsActiveX.dll

9. Test your ActiveX:

Use the TSTCon32.exe tool from Visul Studio to test the ActiveX:

 



Downloads

Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Rocket Mobile® for IBM i is an enterprise mobile application development and deployment platform for customers who rely on the IBM i system. Rocket Mobile for IBM i enables customers to leave proven applications in-place and rapidly repurpose them into new managed and secure mobile applications. Fast, easy creation of mobile, web, and hybrid mobile applications that deploy to any iOS, Android, or Windows mobile phone or tablet Built-in integration for seamless repurposing of existing IBM i applications …

  • More than ever, agile Software Life Cycle Development and DevOps drives critical top-line business impact for customers across a broad range of industries. Learn how XtremIO is fundamentally enabling the next generation of agile Software Development & DevOps to: Radically improve developer efficiency and overall product quality via an All-Flash Dev Ops platform Enable modern lightning fast dev methodologies with zero-cost application & datasets full copies. Allow Developers to have zero storage obstacles, …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date