我无法访问配置文件中的值。
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
var clientsFilePath = config.AppSettings.Settings["ClientsFilePath"].Value;
// the second line gets a NullReferenceException
. config文件:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<!-- ... -->
<add key="ClientsFilePath" value="filepath"/>
<!-- ... -->
</appSettings>
</configuration>
你有什么建议我该怎么做吗?
当前回答
这对我来说很管用:
string value = System.Configuration.ConfigurationManager.AppSettings[key];
其他回答
试试这个:
string filePath = ConfigurationManager.AppSettings["ClientsFilePath"];
这对我来说很管用:
string value = System.Configuration.ConfigurationManager.AppSettings[key];
我正在使用:
ExeConfigurationFileMap configMap = new ExeConfigurationFileMap();
//configMap.ExeConfigFilename = @"d:\test\justAConfigFile.config.whateverYouLikeExtension";
configMap.ExeConfigFilename = AppDomain.CurrentDomain.BaseDirectory + ServiceConstants.FILE_SETTING;
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);
value1 = System.Configuration.ConfigurationManager.AppSettings["NewKey0"];
value2 = config.AppSettings.Settings["NewKey0"].Value;
value3 = ConfigurationManager.AppSettings["NewKey0"];
其中value1 =…和value3 =…给出null和value2 =…作品
然后我决定用以下内容替换内部app.config:
// Note works in service but not in wpf
AppDomain.CurrentDomain.SetData("APP_CONFIG_FILE", @"d:\test\justAConfigFile.config.whateverYouLikeExtension");
ConfigurationManager.RefreshSection("appSettings");
string value = ConfigurationManager.AppSettings["NewKey0"];
使用VS2012 .net
或者你可以用
string value = system.configuration.ConfigurationManager.AppSettings.Get("ClientsFilePath");
//Gets the values associated with the specified key from the System.Collections.Specialized.NameValueCollection
在很长一段时间后回到这个话题…
鉴于ConfigurationManager的消亡，对于仍然在寻找这个尝试的答案的人(例如):
AppSettingsReader appsettingsreader = new AppSettingsReader();
string timeAsString = (string)(new AppSettingsReader().GetValue("Service.Instance.Trigger.Time", typeof(string)));
需要系统。当然是构型。
(将代码编辑为实际工作并且更易于阅读的内容)
