.NET下Web.config与App.Config的增删改操作

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.NET 2.0之后，Web.config和App.Config的增删改操作是相当的方便，使用好了能达到事半功倍的效果。下面是一个App.Config，其实就是一个XML文件

<?xml version="1.0" encoding="utf-8" ?><configuration>  <appSettings>    <add key="status" value="0" />    <add key="checkPath" value="C:\" />  </appSettings></configuration>

看相关的操作：

Web.config（ASP.NET）：

//读System.Web.Configuration.WebConfigurationManager.AppSettings[“y”];//增Configuration config = WebConfigurationManager.OpenWebConfiguration(null); AppSettingsSection app = config.AppSettings; app.Settings.Add("x", "this is X"); config.Save(ConfigurationSaveMode.Modified); //改Configuration config = WebConfigurationManager.OpenWebConfiguration(null); AppSettingsSection app = config.AppSettings; //app.Settings.Add("x", "this is X"); app.Settings["x"].Value = "this is not Y"; config.Save(ConfigurationSaveMode.Modified); //删Configuration config = WebConfigurationManager.OpenWebConfiguration(null); AppSettingsSection app = config.AppSettings; app.Settings.Remove("x"); config.Save(ConfigurationSaveMode.Modified); //ConfigurationManager.RefreshSection("appSettings");

App.config（WINFORM）：

//读System.Configuration.ConfigurationManager.AppSettings[“y”];//增Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); AppSettingsSection app = config.AppSettings; app.Settings.Add("x", "this is X"); config.Save(ConfigurationSaveMode.Modified); //改Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); AppSettingsSection app = config.AppSettings; //app.Settings.Add("x", "this is X"); app.Settings["x"].Value = "this is not Y"; config.Save(ConfigurationSaveMode.Modified); //删Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); AppSettingsSection app = config.AppSettings; app.Settings.Remove("x"); config.Save(ConfigurationSaveMode.Modified);//ConfigurationManager.RefreshSection("appSettings");

注意，如果提示找不到ConfigurationManager，记得添加System.configuration.dll引用，如图：