Differences between Html controls and Web controls

      DocumentWhen you do not need to interact with the background, you can use the HTML control. It consumes less resources and is fast. When you need to interact with the background, you can use the WEB control, or in HTMLAdd runat = "server" to the control"You can also convert an HTML control to an interactive control, but the resources occupied by the control are no different from those occupied by the Web control.

      The WEB control can respond to server events and SET related properties and methods in the background code! HTML is not allowed. WEB server controls need to be processed by the server and then translated into HTML controls and sent to the browser. Therefore, server resources are consumed and IEWSTATE exists, therefore, when sending a message back, the control status is maintained (or you can set it to not save it), which increases the amount of information sent back. HTML is directly sent to the browser, which does not consume server resources, but is saved stateless!   

      Obtain the value of the HTML control.FORM that requires REQUESTMethod, WEB controls can be processed directly through properties!

      Therefore, in general, HTML can be used where the control status does not need to be saved and there is no value to be processed. If you need to dynamically process the control or save its statusWEB Server Control! WEB server controls are easy to use, but they consume more server resources! 

      Many books have said that when considering performance, you should try not to use WEB server controls.   

     When to use it, you don't have to look at the specific situation. When the conditions are loose, you can look at your habits! (From: Fire Station Building College)