public static TAttribute Attribute <TAttribute>(this XElement @this, XName name)
{
var attribute = @this.Attribute(name);
if (attribute == null)
{
throw new Exception($"Unable to find attribute '{name}'");
}
return(ConvertEx.ChangeType <TAttribute>(attribute.Value));
}
protected TProperty GetSetting <TProperty>(TProperty defaultValue = default(TProperty), [CallerMemberName] string propertyName = "")
{
//var accessor = new PropertyAccessor<TProperty>(settingProperty);
if (!_propertyCache.ContainsKey(propertyName))
{
if (_appSettings.AllKeys.Contains(propertyName))
{
var textValue = _appSettings[propertyName].Value;
_propertyCache[propertyName] = ConvertEx.ChangeType <TProperty>(textValue);
}
else
{
SetSetting(defaultValue, propertyName);
}
}
return((TProperty)_propertyCache[propertyName]);
}
private void AssignProperty(string propertyName, string propertyValue)
{
var selectedProperties = _properties.Where(x => x.Name.Equals(propertyName, StringComparison.InvariantCultureIgnoreCase));
if (selectedProperties.Count() <= 0)
{
Console.WriteLine($"'{propertyName}' is not a valid property name.");
}
else if (selectedProperties.Count() > 1)
{
Console.WriteLine($"Invalid settings file. There are too many properties named {propertyName}.");
}
else
{
Console.WriteLine($"Assigning {propertyName}={propertyValue}");
var property = selectedProperties.Single();
property.SetValue(_settings, ConvertEx.ChangeType(propertyValue, property.PropertyType));
}
}
/// <summary>
/// Look for XAML-style properties.
/// </summary>
public static TProperty Property <TProperty>(this XElement @this, string name)
{
if (@this.Attribute(name) != null)
{
return(@this.Attribute <TProperty>(name));
}
else
{
var propertyElementName = string.Format("{0}.{1}", @this.Name, name);
var propertyElement = @this.Element(propertyElementName);
if (propertyElement != null)
{
return(ConvertEx.ChangeType <TProperty>(propertyElement.Value));
}
else
{
throw new Exception($"Unable to find property '{name}'.");
}
}
}
protected void SetSetting <TProperty>(TProperty value, [CallerMemberName] string propertyName = "")
{
//var accessor = new PropertyAccessor<TProperty>(settingProperty);
var keyExists = _appSettings.AllKeys.Contains(propertyName);
var isDirty = false;
if (value == null)
{
if (keyExists)
{
_appSettings.Remove(propertyName);
_propertyCache.Remove(propertyName);
isDirty = true;
}
}
else
{
if (keyExists)
{
var valueText = ConvertEx.ChangeType <string>(value);
if (_appSettings[propertyName].Value != valueText)
{
_appSettings[propertyName].Value = valueText;
_propertyCache[propertyName] = value;
isDirty = true;
}
}
else
{
_appSettings.Add(propertyName, value.ToString());
_propertyCache.Add(propertyName, value);
isDirty = true;
}
}
if (isDirty)
{
_config.Save();
ConfigurationManager.RefreshSection("appSettings");
}
}
