c# - 在 C# 中向 EventHandler 添加一些参数

Question

现在我有了这段代码

public void getRankingList(string country,string type)
    {            
        WebClient client = new WebClient();
        client.AllowReadStreamBuffering = true;
        string url = "......";
        client.DownloadStringCompleted += getRankingResult;
        client.DownloadStringAsync(new Uri(url, UriKind.Absolute));
    }
private void getRankingResult(object sender, DownloadStringCompletedEventArgs e)
    {
        .........
    }

那么现在我可以向 downloadCompleted 事件添加一些参数吗？像这样的东西:

private void getRankingResult(object sender, DownloadStringCompletedEventArgs e, string Para)
    {
        .........
    }

Answer 1

public void getRankingList(string country,string type)
    {            
        WebClient client = new WebClient();
        client.AllowReadStreamBuffering = true;
        string url = "......";
        client.DownloadStringCompleted += (sender, args) => 
        getRankingResult(sender, args, "para");
        client.DownloadStringAsync(new Uri(url, UriKind.Absolute));
    }

private void getRankingResult(object sender, DownloadStringCompletedEventArgs e, string Para)
{
    // .....
}