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Using late binding to ActiveX controls in C#

, 13 Feb 2007
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Using ActiveX controls in Windows Forms applications using C#. NET.

Introduction

Recently, I has to use an ActiveX object (ThumbCtl class) and I had some problems with using an ActiveX control on a Windows Form.

Solution

You must consider that ActiveX controls can't be put directly on a Windows Form. For that, you have to do these steps:

  1. Generate wrapper assemblies for your ActiveX object. You can do this using the aximp.exe tool, e.g., aximp.exe c:\windows\system32\WEBVW.dll. Now you have generated two files: AxWEBVWLib.dll and WEBVWLib.dll.
  2. Add a reference to AxWEBVWLib.dll to your project.
  3. Now use your control like this:
  4. // Create new wrapper instance
    AxWEBVWLib.AxThumbCtl axctl = new AxWEBVWLib.AxThumbCtl();
    // Add object to specific window (control)
    mypanel.Controls.Add(axctl);
    // Set dock style
    axctl.Dock = DockStyle.Fill;
    // use OCX control methods (here we create thumbnail for our jpg file)
    axctl.displayFile(@"c:\temp\graphics.jpg");

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Rafal Ziolkowski
Software Developer (Senior) Pareto PPN AS
Norway Norway
Application Developer and Solutions Architect with many skills in programming languages and technolgies. Specializes in Microsoft .NET platform for last 6 years. Additionally Database Developer with wide experience in MySql, Microsoft SqlServer. Specializes in in building Workflow Software using LogicBase Studio from Transparent Logic (Now Altiris Workflow Solution). Lastly improve his skills in software development in Lotus Domino and Sharepoint. His primary goal is to improve skills in building Enterprise Architectures and Project Management.

Comments and Discussions

 
Generala msg from thanhtuu PinstaffSean Ewington10-May-07 3:57 
GeneralTerse. Pinmembernorm .net13-Feb-07 3:37 

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