public void nextDown()
{
if (isStackDownload)
{
return;
}
if (downloadStack.Count <= 0)
{
return;
}
PhotoDownLoader pd = downloadStack[0];
downloadStack.Remove(pd);
if (pd == null || pd.url == "" || getName(pd.url) == "404")
{
nextDown();
return;
}
else
{
pd.doDownLoad();
}
}