# Common Features

Develop powerful and lightweight web applications using ASP.NET MVC controls. Learn more about the ComponentOne MVC controls in ASP.NET MVC documentation.

## Content



Common features comprises key features for all the **Input** controls available in ASP.NET MVC Edition. Learn about different features for input control categorized as follows.

[AutoExpandSelection property](/componentone/docs/mvc/online-mvc/workwithcontrols/Input/InputCommonFeatures/AutoExpand)

Learn how to use AutoExpandSelection property in Input controls.

[DropDownCssClass property](/componentone/docs/mvc/online-mvc/workwithcontrols/Input/InputCommonFeatures/DropDownCssClass)

Learn how to get or set a CSS class name to add to the controls drop-down element.

[Unobtrusive Validation](/componentone/docs/mvc/online-mvc/workwithcontrols/Input/InputCommonFeatures/DropDownCssClass)

Learn how to use the client side unobtrusive validation support for Input Controls.