UrlPropertyAttribute.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / UrlPropertyAttribute.cs / 1 / UrlPropertyAttribute.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI { 
    using System; 
    using System.ComponentModel;
    using System.Security.Permissions; 
    using System.Web.Util;

    // An UrlPropertyAttribute metadata attribute can be applied to string
    // properties that contain URL values. 
    // This can be used to identify URLs which allows design-time functionality and runtime
    // functionality to do interesting things with the property values. 
    [AttributeUsage(AttributeTargets.Property)] 
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    public sealed class UrlPropertyAttribute : Attribute { 

        private string _filter;
        // Used to mark a property as an URL.
        public UrlPropertyAttribute() : this("*.*") { 
        }
 
        // Used to mark a property as an URL. In addition, the type of files allowed 
        // can be specified. This can be used at design-time to customize the URL picker.
        public UrlPropertyAttribute(string filter) { 
            if(filter == null) {
                _filter = "*.*";
            }
            else { 
                _filter = filter;
            } 
        } 

        // The file filter associated with the URL property. This takes 
        // the form of a file filter string typically used with Open File
        // dialogs. The default is *.*, so all file types can be chosen.
        public string Filter {
            get { 
                return _filter;
            } 
        } 

        public override int GetHashCode() { 
            return Filter.GetHashCode();
        }

        public override bool Equals(object obj) { 
            if (obj == this) {
                return true; 
            } 

            UrlPropertyAttribute other = obj as UrlPropertyAttribute; 
            if (other != null) {
                return Filter.Equals(other.Filter);
            }
 
            return false;
        } 
    } 
}

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