public void SetDependency(params ThreadTask[] tasks)
{
var list = DependsOn.ToList();
list.AddRange(tasks);
// clear finished from list
for (int i = 0; i < list.Count; i++)
{
if (list[i].Finished)
{
list.RemoveAt(i);
i--;
}
}
DependsOn = list.ToArray();
}