WPF 在控件中添加自定义属性

使用WPF在控件中添加自定义属性是一种常见的需求，它使得我们可以为控件添加额外的信息，以便在后续的操作中使用。在本文中，我们将介绍如何在WPF中为控件添加自定义属性，并通过一个实际案例来展示其用法。

csharp
public static readonly DependencyProperty CustomProperty = DependencyProperty.Register(
    "Custom",
    typeof(string),
    typeof(MyControl)
);
public string Custom
{
    get { return (string)GetValue(CustomProperty); }
    set { SetValue(CustomProperty, value); }
}

xaml
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:MyApp"
        Title="MainWindow" Height="450" Width="800">
    
        
    

csharp
using System.Windows;
using System.Windows.Controls;
namespace MyApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
    public class MyControl : Button
    {
        public static readonly DependencyProperty CustomProperty = DependencyProperty.Register(
            "Custom",
            typeof(string),
            typeof(MyControl)
        );
        public string Custom
        {
            get { return (string)GetValue(CustomProperty); }
            set { SetValue(CustomProperty, value); }
        }
    }
}

xaml
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:MyApp"
        Title="MainWindow" Height="450" Width="800">