You want to create a custom control that combines two or more HTML controls.
Use the .NET language of your choice to:
Create a class that inherits from the
class in the
Render method to have it output the
HTML controls you wish to include.
(Optional) Use the
HtmlTextWriter class to enhance
your chances of writing well-formed HTML.
To use the custom control in an ASP.NET page:
Register the assembly containing the control.
Insert the tag for the custom control anywhere in the page.
Figure 5-1 shows the output of a custom control that combines a label and text box. Example 5-1 and Example 5-2 show the VB and C# class files for the custom control. Example 5-3 shows how to use the custom control in an ASP.NET page.
Figure 5-1. Basic custom control output
To create a custom control that combines the functionality of two or
more HTML controls, you first create a class that inherits from the
Control class in
Control class is the base class that all
ASP.NET server controls inherit from. It provides all of the basic
properties, methods, and events necessary to build custom controls.
The only method of
Control that is required to
output HTML is
Render is responsible for writing the HTML that will be rendered by the browser. To enhance ...