调用我的 CreateFile 方法 -> 非静态字段需要对象引用

Question

我是 C# 新手。这是我的问题的一个小例子。如何在静态方法中调用方法，在本例中为 Main？这是错误

An object reference is required for non-static field...

怎么了？

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{

    class Program
    {
        static void Main(string[] args)
        {
            string path = @"c:\";
            string filename = "lsdfkjg.txt";
            CreateFile(path, filename);

            System.Console.WriteLine("Press any key to exit.");
            System.Console.ReadKey();
        }

        public void CreateDirectory(string path, string filename)
        {
            string pathString = System.IO.Path.Combine(path, filename);
            if (!System.IO.Directory.Exists(path))
            {
                System.IO.Directory.CreateDirectory(path);
            }
        }

        public void CreateFile(string path, string filename)
        {
            string pathstring = System.IO.Path.Combine(path, filename);
            if (!System.IO.File.Exists(pathstring))
            {
                System.IO.File.Create(pathstring);
            }
        }
    }
}

Answer 1

使您的方法 CreateFile 静态化

public void CreateFile(string path, string filename)

至

public static void CreateFile(string path, string filename)

调用我的 CreateFile 方法 -> 非静态字段需要对象引用

calling my CreateFile Method -> An object refference is required for non-static field

c#

static

static-methods