C#读取config配置

app.config文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <!--上次成功运行的时间,yyyy-MM-dd hh:mm:ss, 2021-10-25 01:01:01-->
    <add key="LastRunTime" value="2021-10-25 01:01:01" />
    <!--日志文件保存地址，D:\Log\-->
    <add key="LogFile" value="D:\Log\" />
  </appSettings>
</configuration>

 方法一（读取exe的共同app.config文件，没试过能不能读取本程序集的）：

string dllAdress = logAdress =  ConfigurationSettings.AppSettings["keyname"].Trim();

 方法二（读取本程序集的app.config）：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Reflection;
using System.IO;
using System.Configuration;

namespace SendDataZCCA.Common
{
    // 程序集config文件的读取与修改
    public class AppConfigTools
    {
        /// <summary>
        /// 读取本程序集配置config的方法2
        /// 方法一为：string dllAdress = logAdress =  ConfigurationSettings.AppSettings["LogFile"].Trim();
        /// </summary>
        /// <returns></returns>
        public static Configuration GetConfig()
        {
            Assembly assembly = Assembly.GetCallingAssembly();
            string path = string.Format("{0}.config", assembly.Location);
            if (!File.Exists(path))
            {
                throw new FileNotFoundException(path + "路径下的文件未找到！");
            }
            try
            {
                ExeConfigurationFileMap configFile = new ExeConfigurationFileMap();
                configFile.ExeConfigFilename = path;
                Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configFile, ConfigurationUserLevel.None);
                return config;
            }
            catch (Exception)
            {
                throw;
            }
        }

        /// <summary>
        /// 扩展1-configuration.appSettings.app格式转Dictionary格式
        /// </summary>
        /// <returns></returns>
        public static Dictionary<string, string> GetConfigString()
        {
            try
            {
                Dictionary<string, string> dictionary = new Dictionary<string, string>();
                Configuration config = GetConfig();
                var settings = config.AppSettings.Settings;
                foreach (var key in settings.AllKeys)
                {
                    string value = settings[key].Value.ToString();
                    dictionary.Add(key.ToString(), value);
                }
                return dictionary;
            }
            catch (Exception)
            {
                throw;
            }
        }


        /// <summary>
        /// 增删改例子
        /// </summary>
        /// <param name="configName">config文件名</param>
        /// <param name="key">key</param>
        /// <param name="value">值</param>
        public void ModConfig(string configName, string key, string value)
        {
            string configPath = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase.ToString() + "\" + configName;
            ExeConfigurationFileMap ecf = new ExeConfigurationFileMap();
            ecf.ExeConfigFilename = configPath;
            Configuration config = System.Configuration.ConfigurationManager.OpenMappedExeConfiguration(ecf, ConfigurationUserLevel.None);

            config.AppSettings.Settings.Add("VersionType", "V1.5.0.8");  // 增
            config.AppSettings.Settings[key].Value = value;              // 修改
            config.AppSettings.Settings.Remove("VersionType");           // 删除
            config.Save(ConfigurationSaveMode.Modified);                 // 保存文件

            ConfigurationManager.RefreshSection("appSettings");          // 重新载入使文件生效
        }
    }
}