Adds HTML attributes and styles that need to be rendered to the specified HtmlTextWriterTag. This method is used primarily by control developers.
Assembly: System.Web (in System.Web.dll)
To render attributes and styles for a Web Server control on the client, you typically call the AddAttribute and HtmlTextWriter::AddStyleAttribute methods to insert each attribute and style individually to the HtmlTextWriter output stream. To simplify the process, this method encapsulates all calls to the HtmlTextWriter::AddAttribute and HtmlTextWriter::AddStyleAttribute methods for every attribute and style associated with the Web server control. All attributes and styles are inserted into the HtmlTextWriter output stream in a single method call. This method is typically overridden by control developers in derived classes to insert the appropriate attributes and styles to the HtmlTextWriter output stream for the class.
The method cannot be used to insert client script. To use client script, see the ClientScriptManager class.
The following example demonstrates how to create a class that derives from the WebControl class. The base implementation of the method is overridden to add attributes appropriate to the derived class in the HtmlTextWriter output stream.