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）：
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6 using System.Reflection;
7 using System.IO;
8 using System.Configuration;
9
10 namespace SendDataZCCA.Common
11 {
12 // 程序集config文件的读取与修改
13 public class AppConfigTools
14 {
15 /// <summary>
16 /// 读取本程序集配置config的方法2
17 /// 方法一为：string dllAdress = logAdress = ConfigurationSettings.AppSettings["LogFile"].Trim();
18 /// </summary>
19 /// <returns></returns>
20 public static Configuration GetConfig()
21 {
22 Assembly assembly = Assembly.GetCallingAssembly();
23 string path = string.Format("{0}.config", assembly.Location);
24 if (!File.Exists(path))
25 {
26 throw new FileNotFoundException(path + "路径下的文件未找到！");
27 }
28 try
29 {
30 ExeConfigurationFileMap configFile = new ExeConfigurationFileMap();
31 configFile.ExeConfigFilename = path;
32 Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configFile, ConfigurationUserLevel.None);
33 return config;
34 }
35 catch (Exception)
36 {
37 throw;
38 }
39 }
40
41 /// <summary>
42 /// 扩展1-configuration.appSettings.app格式转Dictionary格式
43 /// </summary>
44 /// <returns></returns>
45 public static Dictionary<string, string> GetConfigString()
46 {
47 try
48 {
49 Dictionary<string, string> dictionary = new Dictionary<string, string>();
50 Configuration config = GetConfig();
51 var settings = config.AppSettings.Settings;
52 foreach (var key in settings.AllKeys)
53 {
54 string value = settings[key].Value.ToString();
55 dictionary.Add(key.ToString(), value);
56 }
57 return dictionary;
58 }
59 catch (Exception)
60 {
61 throw;
62 }
63 }
64
65
66 /// <summary>
67 /// 增删改例子
68 /// </summary>
69 /// <param name="configName">config文件名</param>
70 /// <param name="key">key</param>
71 /// <param name="value">值</param>
72 public void ModConfig(string configName, string key, string value)
73 {
74 string configPath = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase.ToString() + "\\" + configName;
75 ExeConfigurationFileMap ecf = new ExeConfigurationFileMap();
76 ecf.ExeConfigFilename = configPath;
77 Configuration config = System.Configuration.ConfigurationManager.OpenMappedExeConfiguration(ecf, ConfigurationUserLevel.None);
78
79 config.AppSettings.Settings.Add("VersionType", "V1.5.0.8"); // 增
80 config.AppSettings.Settings[key].Value = value; // 修改
81 config.AppSettings.Settings.Remove("VersionType"); // 删除
82 config.Save(ConfigurationSaveMode.Modified); // 保存文件
83
84 ConfigurationManager.RefreshSection("appSettings"); // 重新载入使文件生效
85 }
86 }
87 }
补充：C#读取Web.config的不同类型的值
