This class contains a name-value collection of cascading style sheet (CSS) attributes for a specific control. CSS styles are used to configure many aspects of a control's appearance (such as font and color) and are supported for both web controls and HTML controls. A CssStyleCollection is provided through the System.Web.UI.HtmlControls.HtmlControl.Style and System.Web.UI.WebControls.WebControl.Style properties. This collection is similar to the AttributeCollection class, and you can retrieve values by using the specific attribute name or enumerating through the read-only Keys collection.

public sealed class CssStyleCollection {
// Public Instance Properties
   public int Count{get; }
   public ICollection Keys{get; }
   public string this[string key]{set; get; }
// Public Instance Methods
   public void Add(string key, string value);
   public void Clear( );
   public void Remove(string key);
}

Returned By

AttributeCollection.CssStyle, System.Web.UI.HtmlControls.HtmlControl.Style, System.Web.UI.WebControls.WebControl.Style