我想对 user.config 文件使用自定义路径,而不是让 .NET 从默认位置读取它。
我像这样打开文件:
ExeConfigurationFileMap configMap = new ExeConfigurationFileMap();
configMap.ExeConfigFilename = String.Format("{0}\\user.config",AppDataPath);
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.PerUserRoamingAndLocal);
但我不知道如何实际从中读取设置,当我尝试通过 AppData 或 ConfigurationSection 获取值时,出现编译错误,指出这些值无法访问。
我是否需要创建某种包装类才能正确使用数据?
我最近遇到了类似的问题,我必须将读取设置文件的位置从 AppData 中的默认位置更改为 Application 目录。我的解决方案是创建我自己的设置文件,该文件源自应用程序设置库 http://msdn.microsoft.com/en-us/library/system.configuration.applicationsettingsbase.aspx其中指定了一个自定义设置提供者 http://msdn.microsoft.com/en-us/library/system.configuration.settingsprovider.aspx。虽然这个解决方案一开始感觉有点大材小用,但我发现它比我预期的更灵活、更易于维护。
Update:
设置文件示例:
public class BaseSettings : ApplicationSettingsBase
{
protected BaseSettings(string settingsKey)
{ SettingsKey = settingsKey.ToLower(); }
public override void Upgrade()
{
if (!UpgradeRequired)
return;
base.Upgrade();
UpgradeRequired = false;
Save();
}
[SettingsProvider(typeof(MySettingsProvider)), UserScopedSetting]
[DefaultSettingValue("True")]
public bool UpgradeRequired
{
get { return (bool)this["UpgradeRequired"]; }
set { this["UpgradeRequired"] = value; }
}
}
设置提供者示例:
public sealed class MySettingsProvider : SettingsProvider
{
public override string ApplicationName { get { return Application.ProductName; } set { } }
public override string Name { get { return "MySettingsProvider"; } }
public override void Initialize(string name, NameValueCollection col)
{ base.Initialize(ApplicationName, col); }
public override void SetPropertyValues(SettingsContext context, SettingsPropertyValueCollection propertyValues)
{
// Use an XmlWriter to write settings to file. Iterate PropertyValueCollection and use the SerializedValue member
}
public override SettingsPropertyValueCollection GetPropertyValues(SettingsContext context, SettingsPropertyCollection props)
{
// Read values from settings file into a PropertyValuesCollection and return it
}
static MySettingsProvider()
{
appSettingsPath_ = Path.Combine(new FileInfo(Application.ExecutablePath).DirectoryName, settingsFileName_);
settingsXml_ = new XmlDocument();
try { settingsXml_.Load(appSettingsPath_); }
catch (XmlException) { CreateXmlFile_(settingsXml_); } //Invalid settings file
catch (FileNotFoundException) { CreateXmlFile_(settingsXml_); } // Missing settings file
}
}
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