如何在Console App .NET 6.0的program.C中声明静态实例。

发布于 2025-01-24 14:05:05 字数 1475 浏览 2 评论 0原文

我创建了一个控制台应用程序.net 6.0用于学习单例模式。但是我已经观察到program.cs文件的重大变化。

名称空间，class和main方法已从program.cs in .net 6.0 删除代码>。

我相信将在program.cs中编写的代码将被视为main方法中的代码。但是我想创建两个使用全球式实例的静态方法，但我无法做到这一点。

通过声明下面的实例：

它给出了编译错误：

CS0106修饰符“静态”对此项目无效

CS0106在使用静态方法中的实例时，：

它给出了编译错误：

cs8421：静态本地函数不能包含引用 'TableServers1'。

这是program.cs的所有代码：

using SingletonApp;

static TableServers tableservers1 = TableServers.GetInstance();
static TableServers tableservers2 = TableServers.GetInstance();

Console.WriteLine("Hello, World!");

for (int i = 0; i < 5; i++)
{
    Host1();
    Host2();
}
Console.WriteLine();


static void Host1()
{
    Console.WriteLine("Host1 Next server is: " + tableservers1.GetNextServer());
}

static void Host2()
{
    Console.WriteLine("Host2 Next server is: " + tableservers2.GetNextServer());
}

请有人可以解释我们如何使用此新的Minified program.cs，特别是使用全局实例和变量以及创建方法。

原文

I have created a console application .NET 6.0 for learning of Singleton Pattern.
But I have observed a significant change in Program.cs file.

namespace, class and Main method have been removed from program.cs in .NET 6.0.

I believe the code that will be written in program.cs will be considered as within Main method.
But I want to create two static methods which are using globally intialized instances but I am not able to do that.

By declaring the instances like below:

It gives Compile Error:

CS0106 The modifier 'static' is not valid for this item

While using the instances in static methods like below:

It gives Compile Error:

CS8421: A static local function cannot contain a reference to
'tableservers1'.

Here is all the code of program.cs :

using SingletonApp;

static TableServers tableservers1 = TableServers.GetInstance();
static TableServers tableservers2 = TableServers.GetInstance();

Console.WriteLine("Hello, World!");

for (int i = 0; i < 5; i++)
{
    Host1();
    Host2();
}
Console.WriteLine();


static void Host1()
{
    Console.WriteLine("Host1 Next server is: " + tableservers1.GetNextServer());
}

static void Host2()
{
    Console.WriteLine("Host2 Next server is: " + tableservers2.GetNextServer());
}

Please someone can explain how can we use this new minified program.cs, specially to use global instance and variables and creating methods.

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千柳 2025-01-31 14:05:05

如此答案因为C＃10您可以通过引入公共部分类别comproge（在位置）您的底部最高级别语句文件或在单独的文件中）：

// rest of your top-level statement code 
// ...
public partial class Program 
{
    static TableServers tableservers1 = TableServers.GetInstance();
    static TableServers tableservers2 = TableServers.GetInstance();
}

但是我认为切换到“旧样式” program类或将静态字段移至另一类将是一个更好的选择。

As in this answer since C# 10 you can achieve this by introducing public partial class Program (at the bottom of you top level statement file or in separate file):

// rest of your top-level statement code 
// ...
public partial class Program 
{
    static TableServers tableservers1 = TableServers.GetInstance();
    static TableServers tableservers2 = TableServers.GetInstance();
}

But I would argue that switching to "old style" Program class or moving static fields to another class would be a better option.

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