c# - 报错不能在静态类中声明实例成员

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.Specialized;
using System.Configuration;

我收到这个错误

cannot declare instance members in a static class

在编写静态类时。 知道如何解决它，如果可能的话保持类静态吗？谢谢

namespace XXX.Helpers
{
    public static class Utility
    {
        public static string GetConfiguration(string section, string key)
        {
            NameValueCollection mySection = (NameValueCollection)ConfigurationManager.GetSection(section);

            return mySection[key];
        }
    }
}

Answer 1

您不能在static 类中定义非静态成员。在静态类中声明实例成员是不合法的。

来自 Static Classes and Static Class Members (C# Programming Guide)

The following list provides the main features of a static class:

• Contains only static members.

• Cannot be instantiated.

• Is sealed.

• Cannot contain Instance Constructors.

我不得不说，顺便说一句，我在你的静态类中没有看到任何实例成员:)