1 // Licensed to the .NET Foundation under one or more agreements.
2 // The .NET Foundation licenses this file to you under the MIT license.
3 // See the LICENSE file in the project root for more information.
4 
5 using System;
6 
7 namespace System.ComponentModel
8 {
9     /// <devdoc>
10     /// <para>Provides data for the <see langword='PropertyChanging'/>
11     /// event.</para>
12     /// </devdoc>
13     public class PropertyChangingEventArgs : EventArgs
14     {
15         private readonly string _propertyName;
16 
17         /// <devdoc>
18         /// <para>Initializes a new instance of the <see cref='System.ComponentModel.PropertyChangingEventArgs'/>
19         /// class.</para>
20         /// </devdoc>
PropertyChangingEventArgs(string propertyName)21         public PropertyChangingEventArgs(string propertyName)
22         {
23             _propertyName = propertyName;
24         }
25 
26         /// <devdoc>
27         ///    <para>Indicates the name of the property that is changing.</para>
28         /// </devdoc>
29         public virtual string PropertyName
30         {
31             get
32             {
33                 return _propertyName;
34             }
35         }
36     }
37 }
38