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方法如下：
如果是WinForm程序，需要添加引用：
- System.ServiceModel
- System.Configuration
App.config
<?xml version="1.0" encoding="utf-8" ?><configuration> <appSettings> <add key="testkey" value="0"></add> </appSettings></configuration>
NetUtilityLib
using System.Configuration;
namespace pcauto{
public static class ConfigHelper {
///<summary> ///返回*.exe.config文件中appSettings配置节的value项 ///</summary> ///<param name="strKey"></param> ///<returns></returns> public static string GetAppConfig(string strKey) {
string file = System.Windows.Forms.Application.ExecutablePath;
Configuration config = ConfigurationManager.OpenExeConfiguration(file);
foreach (string key in config.AppSettings.Settings.AllKeys) {
if (key == strKey) {
return config.AppSettings.Settings[strKey].Value.ToString();
}
}
return null;
}
///<summary> ///在*.exe.config文件中appSettings配置节增加一对键值对 ///</summary> ///<param name="newKey"></param> ///<param name="newValue"></param> public static void UpdateAppConfig(string newKey, string newValue) {
string file = System.Windows.Forms.Application.ExecutablePath;
Configuration config = ConfigurationManager.OpenExeConfiguration(file);
bool exist = false;
foreach (string key in config.AppSettings.Settings.AllKeys) {
if (key == newKey) {
exist = true;
}
}
if (exist) {
config.AppSettings.Settings.Remove(newKey);
}
config.AppSettings.Settings.Add(newKey, newValue);
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("appSettings");
}
}
}
读示例
ConfigHelper.GetAppConfig("testkey")
写示例
ConfigHelper.UpdateAppConfig("testkey", "abc");
总结
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