88 lines
2.8 KiB
C#
88 lines
2.8 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="DescriptionAttribute.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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/*
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*/
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namespace System.ComponentModel {
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using System;
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using System.Diagnostics;
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using System.Security.Permissions;
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/// <devdoc>
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/// <para>Specifies a description for a property
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/// or event.</para>
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/// </devdoc>
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[AttributeUsage(AttributeTargets.All)]
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public class DescriptionAttribute : Attribute {
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/// <devdoc>
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/// <para>Specifies the default value for the <see cref='System.ComponentModel.DescriptionAttribute'/> , which is an
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/// empty string (""). This <see langword='static'/> field is read-only.</para>
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/// </devdoc>
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public static readonly DescriptionAttribute Default = new DescriptionAttribute();
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private string description;
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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public DescriptionAttribute() : this (string.Empty) {
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}
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/// <devdoc>
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/// <para>Initializes a new instance of the <see cref='System.ComponentModel.DescriptionAttribute'/> class.</para>
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/// </devdoc>
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public DescriptionAttribute(string description) {
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this.description = description;
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}
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/// <devdoc>
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/// <para>Gets the description stored in this attribute.</para>
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/// </devdoc>
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public virtual string Description {
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get {
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return DescriptionValue;
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}
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}
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/// <devdoc>
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/// Read/Write property that directly modifies the string stored
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/// in the description attribute. The default implementation
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/// of the Description property simply returns this value.
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/// </devdoc>
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protected string DescriptionValue {
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get {
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return description;
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}
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set {
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description = value;
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}
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}
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public override bool Equals(object obj) {
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if (obj == this) {
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return true;
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}
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DescriptionAttribute other = obj as DescriptionAttribute;
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return (other != null) && other.Description == Description;
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}
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public override int GetHashCode() {
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return Description.GetHashCode();
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}
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#if !SILVERLIGHT
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/// <internalonly/>
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/// <devdoc>
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/// </devdoc>
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public override bool IsDefaultAttribute() {
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return (this.Equals(Default));
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}
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#endif
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}
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}
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