public static void InsertTask(this List list, int position, Task task)
{
List<Task> tasks = list.Tasks.ToList();
tasks.Insert(position, task);
list.Tasks = tasks.ToArray();
}
public static void RemoveTask(this List list, Task task)
{
List<Task> tasks = list.Tasks.ToList();
tasks.Remove(task);
list.Tasks = tasks.ToArray();
}
