Server Control and Custom Control

• Building block of the GUI
• E.g. Textbox, Button , drop down list ...
• E.g. Validation, Security , Master Page and data manipulation.

5 Type of Control :

• HTML controls
• <a>,<button>,<input type>
• HTML server controls
• HTML control with runat=server
• Able run in ASP.NET
• ASP.NET server controls
• Validation control
• Data source control - data binding
• Data view control - list and table from data source
• Personalization control - personalization of page based on user information
• Login and security control
• Master Page
• Navigation control
• Rich control - file upload and calendar control
• ASP.NET AJAX server controls
• User controls

Custom Control

• Compile into DLL and used as any other ASP.NET server control.

Different Custom Control and User Control

• Custom control are compiled into assembly (.dll), user control are not.
• Custom control can add into toolbox, user control cannot.
• Custom control are difficult to create, it has no designer, and everything done by code; user control are easier to create as similar to creating web pages.
• Single copy of custom control can be used in multiple application (just browse to the location); A separate user control is required in each application.