Question

例如，我有一个类的静态列表：

    public static List<MadjType> MAASource = new List<MadjType>
    {
        new MadjType{Id = 1, Name = "MAA - 1"},
        new MadjType{Id = 2, Name = "MAA - 2"},
        new MadjType{Id =3, Name = "MAA - 3"},
        new MadjType{Id = 4, Name = "MAA - 4"},
        new MadjType{Id = 5, Name = "MAA - 5"},
        new MadjType{Id = 6, Name = "MAA - 6"},
        new MadjType{Id = 7, Name = "MAA - 7"},
        new MadjType{Id = 8, Name = "MAA - 8"},
        new MadjType{Id = 9, Name="MAA - 9"},
        new MadjType{Id = 10, Name= "MAA - 10"},
    };

我有一个资源文件告诉我是否正在为Version1或Version2构建（我将此作为解决方案其他部分的条件，例如

if (ConfigurationResource.Version == "Version2")
{
//return different values
}

）。

所以，对于Version2，我不想在这个静态列表中添加最后几个项目，所以意思是：

    new MadjType{Id = 8, Name = "MAA - 8"},
    new MadjType{Id = 9, Name="MAA - 9"},
    new MadjType{Id = 10, Name= "MAA - 10"},

当我使用资源文件中声明的Version2时，

不应包含在MAASource中。

我有什么方法可以为这个静态列表执行此操作？

Answer 1

这取决于您是否可以静态访问ConfigurationResource.Version。如果是这样，您可以使用静态构造函数初始化MAASource。

public static List<MadjType> MAASource { get; set; }

static MyClass(){
    if (ConfigurationResource.Version == "Version1")
    {
        //return values for Version1
    }
    if (ConfigurationResource.Version == "Version2")
    {
        //return values for Version2
    }
}

Answer 2

您可以在静态构造函数中初始化值。但这需要版本在静态上下文中也可用。

public static List<MadjType> MAASource { get; private set; }

static MyClass()
{
    switch (ConfigurationResource.Version)
    {
        case "Version1":
            MAASource = new List<MadjType>
                {
                    new MadjType { Id = 1, Name = "MAA - 1" },
                    new MadjType { Id = 2, Name = "MAA - 2" },
                    new MadjType { Id = 3, Name = "MAA - 3" },
                    new MadjType { Id = 4, Name = "MAA - 4" },
                    new MadjType { Id = 5, Name = "MAA - 5" },
                    new MadjType { Id = 6, Name = "MAA - 6" },
                    new MadjType { Id = 7, Name = "MAA - 7" },
                    new MadjType { Id = 8, Name = "MAA - 8" },
                    new MadjType { Id = 9, Name = "MAA - 9" },
                    new MadjType { Id = 10, Name = "MAA - 10" },
                };
            break;

        case "Version2":
            MAASource = new List<MadjType>
                {
                    new MadjType { Id = 1, Name = "MAA - 1" },
                    new MadjType { Id = 2, Name = "MAA - 2" },
                    new MadjType { Id = 3, Name = "MAA - 3" },
                    new MadjType { Id = 4, Name = "MAA - 4" },
                    new MadjType { Id = 5, Name = "MAA - 5" },
                    new MadjType { Id = 6, Name = "MAA - 6" },
                    new MadjType { Id = 7, Name = "MAA - 7" },
                };
            break;
    }
}

您可以创建列表并根据版本添加项目，而不是在案例陈述中定义整个集合。

有条件地声明静态列表

2 个答案: