public static PropertyCommandParameter <TCustomParameter, TValue> Cast(object parameter)
{
var parameterToCast = parameter as PropertyCommandParameter <object, object>;
if (parameterToCast == null)
{
throw new InvalidCastException(string.Format("Failed to case {0} to {1}",
parameter.GetType(), typeof(PropertyCommandParameter <object, object>)));
}
var castedParameter = new PropertyCommandParameter <TCustomParameter, TValue>(
(TCustomParameter)parameterToCast.CustomParameter,
parameterToCast.Property,
(TValue)parameterToCast.Value);
return(castedParameter);
}
protected override void InitializeCore(FrameworkElement source)
{
DependencyPropertyDescriptor descriptor = DependencyPropertyDescriptor.FromProperty(Property, source.GetType());
descriptor.AddValueChanged(source, (s, e) =>
{
CommandParameter <object> parameter = new PropertyCommandParameter <object, object>(
CustomParameter, Property, source.GetValue(Property));
object value = Value;
if (descriptor.Converter.CanConvertFrom(typeof(string)))
{
value = descriptor.Converter.ConvertFromString(Value);
}
if (object.Equals(source.GetValue(Property), value))
{
ExecuteCommand(parameter);
}
});
}