C# 如何使用c将文件上传到metro应用程序中的ftp服务器#

我想用C#将文件上传到metro应用程序中的FTP服务器。我试过这个，但没用

public static async Task<bool> UpLoad(string localsubfolders, string ftpURIInfo, string Username, string Password, string filename)
    {


        bool Successful = false;
        try
        {


            BackgroundUploader uploader = new BackgroundUploader();

            StorageFolder storageFolder =  Windows.Storage.ApplicationData.Current.LocalFolder;
            StorageFile sampleFile =  await storageFolder.GetFileAsync("wp_ss_20150313_0001.png");



            Uri urlWithCredential;
            bool Success = Uri.TryCreate(ftpURIInfo + "" + filename, UriKind.Absolute, out urlWithCredential);

            if (!string.IsNullOrEmpty(Username.Trim()) &&
               !string.IsNullOrEmpty(Password.Trim()))
            {
                urlWithCredential = new Uri(urlWithCredential.ToString().ToLower().Replace(@"ftp://",
                    string.Format(@"ftp://{0}:{1}@",
                    Username,
                    Password)));
            }

            UploadFile(urlWithCredential, sampleFile);

        }
        catch (Exception)
        {
            throw;
        }
        return Successful;
    }



    public static async Task UploadFile(Uri destination, StorageFile targetFile)
    {
        var request = WebRequest.Create(destination);
        request.Credentials = Credentials;
        request.Method = "STOR";
        try
        {
            using (var requestStream = (await request.GetRequestStreamAsync()))
            using (var stream = await targetFile.OpenStreamForReadAsync())
            {
                stream.CopyTo(requestStream);
            }
        }
        catch { }
    }

我在这里创建的目的是将小的.png文件上传到服务器，但它不起作用

public static async Task<bool> UpLoad(string localsubfolders, string ftpURIInfo, string Username, string Password, string filename)
    {


        bool Successful = false;
        try
        {


            BackgroundUploader uploader = new BackgroundUploader();

            StorageFolder storageFolder =  Windows.Storage.ApplicationData.Current.LocalFolder;
            StorageFile sampleFile =  await storageFolder.GetFileAsync("wp_ss_20150313_0001.png");



            Uri urlWithCredential;
            bool Success = Uri.TryCreate(ftpURIInfo + "" + filename, UriKind.Absolute, out urlWithCredential);

            if (!string.IsNullOrEmpty(Username.Trim()) &&
               !string.IsNullOrEmpty(Password.Trim()))
            {
                urlWithCredential = new Uri(urlWithCredential.ToString().ToLower().Replace(@"ftp://",
                    string.Format(@"ftp://{0}:{1}@",
                    Username,
                    Password)));
            }

            UploadFile(urlWithCredential, sampleFile);

        }
        catch (Exception)
        {
            throw;
        }
        return Successful;
    }



    public static async Task UploadFile(Uri destination, StorageFile targetFile)
    {
        var request = WebRequest.Create(destination);
        request.Credentials = Credentials;
        request.Method = "STOR";
        try
        {
            using (var requestStream = (await request.GetRequestStreamAsync()))
            using (var stream = await targetFile.OpenStreamForReadAsync())
            {
                stream.CopyTo(requestStream);
            }
        }
        catch { }
    }

公共静态异步任务上载（字符串localsubfolders、字符串ftpURIInfo、字符串用户名、字符串密码、字符串文件名）
{
bool成功=错误；
尝试
{
BackgroundUploader uploader=新的BackgroundUploader（）；
StorageFolder StorageFolder=Windows.Storage.ApplicationData.Current.LocalFolder；
StorageFile sampleFile=等待storageFolder.GetFileAsync（“wp_ss_20150313_0001.png”）；
Uri urlWithCredential；
bool Success=Uri.TryCreate（ftpURIInfo+“”+文件名，UriKind.Absolute，out urlWithCredential）；
如果（！string.IsNullOrEmpty（Username.Trim（））&&
！string.IsNullOrEmpty（Password.Trim（）））
{
urlWithCredential=新Uri（urlWithCredential.ToString（）.ToLower（）.Replace（@“ftp://”），
string.Format（@“ftp://{0}:{1}@），
用户名，
密码),；
}
上传文件（urlWithCredential、sampleFile）；
}
捕获（例外）
{
投
}
成功回归；
}
公共静态异步任务上载文件（Uri目标、StorageFile目标文件）
{
var request=WebRequest.Create（目的地）；
请求.凭据=凭据；
request.Method=“STOR”；
尝试
{
使用（var requestStream=（wait request.GetRequestStreamAsync（））
使用（var stream=await targetFile.OpenStreamForReadAsync（））
{
CopyTo（requestStream）；
}
}
捕获{}
}

我找到了这个问题的解决方案

以下代码工作正常

public static async Task<bool> SmallUpload1(string ftpURIInfo, string filename, string username, string password)
    {

        string serverUrl;
        Uri serverUri = null;
        //StorageFolder localFolderArea;
        NetworkCredential credential;
        bool Successful = false;

        try
        {

            StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
            StorageFile targetFile = await storageFolder.GetFileAsync("wp_ss_20150313_0001.png");





            Uri.TryCreate(ftpURIInfo, UriKind.Absolute, out serverUri);
            serverUrl = serverUri.ToString();
            credential = new System.Net.NetworkCredential(username.Trim(),
                password.Trim());

            WebRequest request = WebRequest.Create(serverUrl + "/" + filename);
            request.Credentials = credential;

            request.Proxy = WebRequest.DefaultWebProxy;

            //STOR is for ftp: // POST is for http:// web sites
            request.Method = "STOR";

            byte[] buffer = Encoding.UTF8.GetBytes(UploadLine);




            using (Stream requestStream = await request.GetRequestStreamAsync())
            {
                using (var stream = await targetFile.OpenStreamForReadAsync())
                {
                    stream.CopyTo(requestStream);
                }
            }

            Successful = true;

        }
        catch (Exception)
        {

            throw;
        }
        return Successful;

    } 

公共静态异步任务SmallUpload1（字符串ftpURIInfo、字符串文件名、字符串用户名、字符串密码）
{
字符串serverUrl；
uriserveruri=null；
//StorageFolderLocalFolderArea；
网络证书；
bool成功=错误；
尝试
{
StorageFolder StorageFolder=Windows.Storage.ApplicationData.Current.LocalFolder；
StorageFile targetFile=await storageFolder.GetFileAsync（“wp_ss_20150313_0001.png”）；
TryCreate（ftpURIInfo、UriKind.Absolute、out-serverUri）；
serverUrl=serverUri.ToString（）；
凭证=新系统.Net.NetworkCredential（username.Trim（），
password.Trim（））；
WebRequest=WebRequest.Create（serverUrl+“/”+文件名）；
请求。凭证=凭证；
request.Proxy=WebRequest.DefaultWebProxy；
//STOR代表ftp://POST代表http://网站
request.Method=“STOR”；
byte[]buffer=Encoding.UTF8.GetBytes（上传线）；
使用（Stream requestStream=await request.GetRequestStreamAsync（））
{
使用（var stream=await targetFile.OpenStreamForReadAsync（））
{
CopyTo（requestStream）；
}
}
成功=正确；
}
捕获（例外）
{
投
}
成功回归；
} 

请指定

它不工作

。