创建一个在控制器C#的所有方法中都可用的共享属性

public class MyController : Controller
{
    public static string SharedProperty { get; set; }

    public IActionResult Method1()
    {
        // 使用共享属性
        string value = SharedProperty;
        // ...
    }

    public IActionResult Method2()
    {
        // 使用共享属性
        SharedProperty = "New Value";
        // ...
    }
}

public class SharedData
{
    private static SharedData instance;
    public string SharedProperty { get; set; }

    private SharedData()
    {
        // 私有构造函数
    }

    public static SharedData Instance
    {
        get
        {
            if (instance == null)
            {
                instance = new SharedData();
            }
            return instance;
        }
    }
}

public class MyController : Controller
{
    public IActionResult Method1()
    {
        // 使用共享属性
        string value = SharedData.Instance.SharedProperty;
        // ...
    }

    public IActionResult Method2()
    {
        // 使用共享属性
        SharedData.Instance.SharedProperty = "New Value";
        // ...
    }
}