单个app.config多项目C＃

通用配置文件

<?xml version="1.0" encoding="utf-8" ?><configuration>    <configSections>        <section  name="appSettings"  type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"  />    </configSections>    <appSettings>        <add key="key1" value="value1"/>    </appSettings></configuration>

访问映射的配置文件

ConfigurationFileMap fileMap = new ConfigurationFileMap(file); //Path to your config fileConfiguration configuration = ConfigurationManager.OpenMappedMachineConfiguration(fileMap);string value = configuration.AppSettings.Settings["key1"].Value;