Question

我需要创建将多个Xelements连接成一个的方法。我创建了以下方法：

        static void DoStuff(string IP, string login, string password, string port)
        {
            CommonMethods cm = new CommonMethods();            
            WebClient webClient = new WebClient();
            XElement output = null;

            try
            {
                webClient = cm.ConnectCiscoUnityServerWebClient(IP, login, password);
                int rowsPerPage = 100;
                int pageNumber = 1;
                Console.WriteLine("Getting logins from " + IP);

                do
                {
                    Console.WriteLine("Downloading " + pageNumber + " page");
                    string uri = @"https://" + IP + ":" + port + "/vmrest/users?bla&rowsPerPage=" + rowsPerPage + "&pageNumber=" + pageNumber;
                    Stream stream = webClient.OpenRead(uri);
                    output = XElement.Load(stream);                    
                    pageNumber++;
                }
                while (output.HasElements);

                Console.WriteLine(output);
            }
            catch (Exception ex)
            {
                cm.LogErrors(ex.ToString(), System.Reflection.MethodBase.GetCurrentMethod().Name.ToString());
            }
        }

但在Do While循环中，输出被覆盖。能否请您提供一些解决方案，将输出连接成一个？

Answer 1

您在每次迭代时覆盖output元素的值。而是创建结果元素并在每次迭代时向其添加新元素：

CommonMethods cm = new CommonMethods();            
WebClient webClient = new WebClient();
XElement output = null;

try
{
    webClient = cm.ConnectCiscoUnityServerWebClient(IP, login, password);
    int rowsPerPage = 100;
    int pageNumber = 1;
    Console.WriteLine("Getting logins from " + IP);
    XElement result = new XElement("result"); // will hold results

    do
    {
        Console.WriteLine("Downloading " + pageNumber + " page");
        string uri = @"https://" + IP + ":" + port + 
           "/vmrest/users?bla&rowsPerPage=" + 
           rowsPerPage + "&pageNumber=" + pageNumber;

        Stream stream = webClient.OpenRead(uri);
        output = XElement.Load(stream);
        result.Add(output); // add current output to results
        pageNumber++;
    }
    while (output.HasElements);

    Console.WriteLine(result);
}
catch (Exception ex)
{
    cm.LogErrors(ex.ToString(), MethodBase.GetCurrentMethod().Name.ToString());
}

结果元素可以是第一个加载的output元素。然后，您可以对下一个元素执行一些查询，并将结果添加到结果元素。如果没有看到你正在使用的数据，很难说清楚。

来自多个流的一个XElement

1 个答案: