Getting Started with HtmlEditor Control
Once you have downloaded the component, you just need to add the control to your 
Visual Studio Toolbox, 
drag and drop an instance of the control to your Windows 
Form and you are ready to go.
1. Within your Visual Studio, please select the following menu Tools -> Choose Toolbox Items.
    
2. Once the "Choose Toolbox Items" dialog box appears, select the ".NET Framework Components" tab.
   

3. Click the "Browse" button and then select the DLL under your installation directory.
    
4. Once you select the DLL, ".NET Framework Components" tab will be populated 
with this new control 
    and it will be selected automatically. 
   

5. Click the "OK" button to finally add this control to your toolbox.
    