C# 配置文件App.config的读取和修改

自定义config参数

在App.config下插入appSettings标签块，在这里加入自定义的配置属性

读取和修改

读写的value都是字符串的类型，读写都是生成bin文件夹下的.config文件不是在源码src文件夹下的config
要先引用System.Configuration

static string file = System.Windows.Forms.Application.ExecutablePath;
        static System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(file);
        
        public void testRead()
        {
            var c = ConfigurationManager.AppSettings["title"];
            
            Console.WriteLine(c);
        }
        
        public void testWrite()
        {
            config.AppSettings.Settings["title"].Value = "789";
            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("appSettings");
            Console.WriteLine("test");
            var c = ConfigurationManager.AppSettings["title"];
            Console.WriteLine(c);
        }
        
    }