C#的反射机制在桌面开发中有何应用？

IPlugin

IPlugin

// 定义插件接口
public interface IDesktopPlugin
{
    string PluginName { get; }
    void Initialize(IMainApplication app);
    void Run();
}

// 主程序加载插件的伪代码
public class PluginManager
{
    public List<IDesktopPlugin> LoadPlugins(string pluginDirectory)
    {
        var plugins = new List<IDesktopPlugin>();
        foreach (string file in Directory.GetFiles(pluginDirectory, "*.dll"))
        {
            try
            {
                Assembly assembly = Assembly.LoadFrom(file);
                foreach (Type type in assembly.GetTypes())
                {
                    // 检查类型是否实现了 IDesktopPlugin 接口且不是抽象类或接口本身
                    if (typeof(IDesktopPlugin).IsAssignableFrom(type) && !type.IsInterface && !type.IsAbstract)
                    {
                        IDesktopPlugin plugin = (IDesktopPlugin)Activator.CreateInstance(type);
                        plugins.Add(plugin);
                        Console.WriteLine($"Loaded plugin: {plugin.PluginName}");
                    }
                }
            }
            catch (Exception ex)
            {
                // 记录加载失败的插件，但不要中断整个加载过程
                Console.WriteLine($"Failed to load assembly {file}: {ex.Message}");
            }
        }
        return plugins;
    }
}

Assembly.LoadFrom

IDesktopPlugin

Activator.CreateInstance(type)

MethodInfo.Invoke

PropertyInfo.GetValue/SetValue

User

Name

Email

Age

Product

ProductName

Price

Stock

[DisplayName]

TextBox

string

NumericUpDown

int

// 简单的动态UI生成示例（概念性代码）
public class DynamicUIBuilder
{
    public Panel BuildUIForObject(object dataObject)
    {
        Panel panel = new Panel();
        // 假设这里有某种布局管理器
        foreach (PropertyInfo prop in dataObject.GetType().GetProperties())
        {
            // 排除只读属性或不应显示的属性
            if (!prop.CanWrite || prop.GetCustomAttribute<BrowsableAttribute>()?.Browsable == false)
                continue;

            Label label = new Label { Text = GetDisplayName(prop) };
            panel.Controls.Add(label);

            Control editorControl;
            if (prop.PropertyType == typeof(string))
            {
                TextBox textBox = new TextBox();
                textBox.DataBindings.Add("Text", dataObject, prop.Name);
                editorControl = textBox;
            }
            else if (prop.PropertyType == typeof(int))
            {
                NumericUpDown numericUp = new NumericUpDown();
                numericUp.DataBindings.Add("Value", dataObject, prop.Name);
                editorControl = numericUp;
            }
            // ... 更多类型判断
            else
            {
                // 默认使用TextBox或显示为只读
                TextBox textBox = new TextBox { ReadOnly = true, Text = prop.GetValue(dataObject)?.ToString() };
                editorControl = textBox;
            }
            panel.Controls.Add(editorControl);
        }
        return panel;
    }

    private string GetDisplayName(PropertyInfo prop)
    {
        // 尝试获取 DisplayNameAttribute，否则使用属性名
        var attr = prop.GetCustomAttribute<DisplayNameAttribute>();
        return attr != null ? attr.DisplayName : prop.Name;
    }
}

PropertyInfo