public void Start()
{
CapturerItem item = new CapturerItem(this.Url);
item.PropertyChanged += item_PropertyChanged;
this._CapturerLists.Add(item);
item.Start();
}
private void Dispatch()
{
while (this._CurrentTaskCount < MAX_TASK && this._Queue.Count > 0)
{
CapturerItem item = this._Queue.Dequeue();
item.PropertyChanged += item_PropertyChanged;
item.Start();
this._CurrentTaskCount++;
}
}