ASP.NET中Config文件的读写示例

本文主要给大家介绍了关于ASP.NET中Config读写示例的相关内容，分享出来供大家参考学习，话不多说，来一起看看详细的介绍吧。

方法如下：

如果是WinForm程序，需要添加引用：

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