使用其他文件中没有类名的静态方法[重复]

Question

我尝试使用类似 using Printer; 但它不起作用。

我只想使用 P(); 而不是 Printer.P();

文件打印机.cs

using System;

namespace animals
{
    public class Printer
    {
        public static void P()
        {
            P("\a");
        }

        public static void P(object val, bool doEnterAfterLine = true, bool printInOneLine = false)
        {
            P(val.ToString());
            if (doEnterAfterLine)
                Console.WriteLine(); //enter
        }

        static void P(bool printSeparator = false)
        {
            if (printSeparator == false)
                return;

            P("---------------------------------------------------------", true);
        }


        static void P(string value = "none", bool modifyColor = false, bool ding = false, bool printInOneLine = false)
        {
            var oldColor = Console.ForegroundColor;

            if (modifyColor)
                Console.ForegroundColor = ConsoleColor.Magenta;

            if (printInOneLine)
                Console.Write(value + " ");
            else
                Console.WriteLine(value);

            Console.ForegroundColor = oldColor; //recover color

            if (ding)
            {
                Console.Write("\a");
            }
        }
    }
}

文件 Program.cs

using System;
// this resolve problem: using static animals.Printer;
 
namespace animals 
{
     class Program
     {
         static void Main(string[] args)
         {           
             Printer.P(); // it works
             P();         // info: does not exist in current context                        
         }
     }
}

Answer 1

使用using static <namespace>.<class>; 访问<class> 的成员，无需限定其名称。

using static animals.Printer;