小编mar*_*lof的帖子

我有这个简单的方法:

static void Extract()
{
    Interlocked.Add(ref Program.n, 1);
    Console.WriteLine("Currently on: " + n + " Page");
    Console.WriteLine("Downloading String...Extract...");
    WebClient client = new WebClient();
    string html = client.DownloadString("www.something.com&page=" + n);
    Console.WriteLine("Proccesing data from string... (Extract)");   
}

我想Extract()一次调用几次方法,我尝试了这个:

while(n<3411)
{
    var tasks = new List<Task>();
    for (int x = 0; x < 7; x++)
    {
        tasks.Add(Task.Factory.StartNew(new Action(Extract)));
    }

    Task.WaitAll(tasks);       
}

但我得到错误

严重级代码描述项目文件行抑制状态错误CS1503参数1:无法从'System.Collections.Generic.List'转换为'System.Threading.Tasks.Task'RecipeCommunity_Users C:\ Users\xxx\AppData\Local\Temporary Projects\Community_Users\Program.cs 24有效

我如何Extract()一次多次调用方法？