protected override void Execute(NativeActivityContext context)
{
var source = SourceList.Get(context);
var propertyName = PropertyName.Get(context);
var properties = TypeDescriptor.GetProperties(typeof(T));
var property = properties.Cast <PropertyDescriptor>().FirstOrDefault(i => i.Name.Equals(propertyName, System.StringComparison.InvariantCultureIgnoreCase));
if (property == null)
{
throw new DeveloperException("Задан не верный параметр {0}", propertyName);
}
var sum = source.Sum(o => Convert.ToInt32(property.GetValue(o)));
context.SetValue(Result, sum);
}
