System.Design 2.0.0.0 System.Web.UI.Design.UrlEditor The class is an object that can be used at design time to select and edit a mail file name as a string, and assign the string to a control property. For example, the control uses the class at design time to set the value of the property. Use the attribute to associate the with a property. When the associated property is edited in the design surface, the designer host calls the method. The method displays a dialog box for selecting a mail file name from a filtered list of files, and returns the file name that is selected by the user. The method indicates the display style of the user interface. Derive a class from the to define a custom editor for a mail file name property. For example, a derived class can override the method, and display an instance with a custom mail file filter or title. Provides a user interface for selecting and editing a mail file name for a property at design time. Constructor 2.0.0.0 To be added. Initializes a new instance of the class. Property 2.0.0.0 System.String To be added. To be added. Gets the caption for the editor dialog. Property 2.0.0.0 System.String To be added. To be added. Gets the file filter string for the dialog (such as "*.txt").