使用WebBrowser控件打印多个文件

Question

我想打印超过1个html文件，如果可能的话，每个文件的打印时间不止一次。 我看过MSDN教程https://msdn.microsoft.com/en-us/library/b0wes9a3(v=vs.85).aspx并尝试修改它：

// Add an event handler that prints the document after it loads.
        webBrowserForPrinting.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler((sender, e) => PrintDocument(sender, e, file1copies));

        // Set the Url property to load the document.
        webBrowserForPrinting.Url = new Uri(args[1]);

        webBrowserForPrinting.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler((sender, e) => PrintDocument(sender, e, file2copies));
        webBrowserForPrinting.Url = new Uri(args[3]);

和我的方法：

 private void PrintDocument(object sender, WebBrowserDocumentCompletedEventArgs e, int copies) {
        if (webBrowserForPrinting.ReadyState != WebBrowserReadyState.Complete || webBrowserForPrinting.Url.Equals("about:blank"))
            return;
        try
        {

            for (int i = 0; i < copies; i++) {
                ((WebBrowser)sender).Print();
                Console.WriteLine("Printing...");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }

我每次只打印最后一个网址 我怎样才能使它发挥作用？