超出LinkedList内存限制(LinkedList memory limit exceeded)

 所以我终于得到了如何做到这一点。 我的代码如下所示： 
 
byte[] concatinated = null;
string boundary = string.Empty;
boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
byte[] buffer;

StringBuilder sb = new StringBuilder();
sb.Append("--" + boundary + "\r\n");
foreach (KeyValuePair<string, string> param1 in kparams)
{
    sb.Append("Content-Disposition: form-data; name=\"" + param1.Key + "\"" + "\r\n");
    sb.Append("\r\n");
    sb.Append(param1.Value);
    sb.Append("\r\n--" + boundary + "\r\n");
}
buffer = Encoding.UTF8.GetBytes(sb.ToString());

byte[] fileBytes = null;
byte[] filebytes2 = null;
foreach (KeyValuePair<string, StorageFile> file in kfiles)
{
    StorageFile storageFile = await Windows.Storage.StorageFile.GetFileFromPathAsync(file.Value.Path);
    using (IRandomAccessStreamWithContentType stream = await storageFile.OpenReadAsync())
    {
        fileBytes = new byte[stream.Size];

        using (DataReader reader = new DataReader(stream))
        {
            await reader.LoadAsync((uint)stream.Size);
            reader.ReadBytes(fileBytes);
        }
    }
    filebytes2 = BuildByteArray("fileData", storageFile.Name, fileBytes, boundary);

    concatinated = new byte[buffer.Length + filebytes2.Length];
    System.Buffer.BlockCopy(buffer, 0, concatinated, 0, buffer.Length);
    System.Buffer.BlockCopy(filebytes2, 0, concatinated, buffer.Length, filebytes2.Length);
    buffer = new byte[concatinated.Length];
    concatinated.CopyTo(buffer, 0);
}
 
 和 
 
private byte[] BuildByteArray(string name, string fileName, byte[] fileBytes, string boundary)
{
        // Create multipart/form-data headers.
        byte[] firstBytes = Encoding.UTF8.GetBytes(String.Format(
            "--{0}\r\n" +
            "Content-Disposition: form-data; name=\"{1}\"; filename=\"{2}\"\r\n" +
            "\r\n",
            boundary,
            name,
            fileName));

        byte[] lastBytes = Encoding.UTF8.GetBytes(String.Format(
            "\r\n" +
            "--{0}--\r\n",
            boundary));

        int contentLength = firstBytes.Length + fileBytes.Length + lastBytes.Length;
        byte[] contentBytes = new byte[contentLength];

        // Join the 3 arrays into 1.
        Array.Copy(
            firstBytes,
            0,
            contentBytes,
            0,
            firstBytes.Length);
        Array.Copy(
            fileBytes,
            0,
            contentBytes,
            firstBytes.Length,
            fileBytes.Length);
        Array.Copy(
            lastBytes,
            0,
            contentBytes,
            firstBytes.Length + fileBytes.Length,
            lastBytes.Length);

        return contentBytes;
  }
 
 然后我像这样使用它： 
 
HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, url);
requestMessage.Content = new ByteArrayContent(concat);
requestMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("multipart/form-data");
requestMessage.Content.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("boundary", boundary));
var response = await client.SendAsync(requestMessage);
var content = await response.Content.ReadAsStringAsync();
 
 我从这篇文章中得到的想法和第二个功能。 

So I finally got how to do it. My code looks like this:
 
byte[] concatinated = null;
string boundary = string.Empty;
boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
byte[] buffer;

StringBuilder sb = new StringBuilder();
sb.Append("--" + boundary + "\r\n");
foreach (KeyValuePair<string, string> param1 in kparams)
{
    sb.Append("Content-Disposition: form-data; name=\"" + param1.Key + "\"" + "\r\n");
    sb.Append("\r\n");
    sb.Append(param1.Value);
    sb.Append("\r\n--" + boundary + "\r\n");
}
buffer = Encoding.UTF8.GetBytes(sb.ToString());

byte[] fileBytes = null;
byte[] filebytes2 = null;
foreach (KeyValuePair<string, StorageFile> file in kfiles)
{
    StorageFile storageFile = await Windows.Storage.StorageFile.GetFileFromPathAsync(file.Value.Path);
    using (IRandomAccessStreamWithContentType stream = await storageFile.OpenReadAsync())
    {
        fileBytes = new byte[stream.Size];

        using (DataReader reader = new DataReader(stream))
        {
            await reader.LoadAsync((uint)stream.Size);
            reader.ReadBytes(fileBytes);
        }
    }
    filebytes2 = BuildByteArray("fileData", storageFile.Name, fileBytes, boundary);

    concatinated = new byte[buffer.Length + filebytes2.Length];
    System.Buffer.BlockCopy(buffer, 0, concatinated, 0, buffer.Length);
    System.Buffer.BlockCopy(filebytes2, 0, concatinated, buffer.Length, filebytes2.Length);
    buffer = new byte[concatinated.Length];
    concatinated.CopyTo(buffer, 0);
}
 
And
 
private byte[] BuildByteArray(string name, string fileName, byte[] fileBytes, string boundary)
{
        // Create multipart/form-data headers.
        byte[] firstBytes = Encoding.UTF8.GetBytes(String.Format(
            "--{0}\r\n" +
            "Content-Disposition: form-data; name=\"{1}\"; filename=\"{2}\"\r\n" +
            "\r\n",
            boundary,
            name,
            fileName));

        byte[] lastBytes = Encoding.UTF8.GetBytes(String.Format(
            "\r\n" +
            "--{0}--\r\n",
            boundary));

        int contentLength = firstBytes.Length + fileBytes.Length + lastBytes.Length;
        byte[] contentBytes = new byte[contentLength];

        // Join the 3 arrays into 1.
        Array.Copy(
            firstBytes,
            0,
            contentBytes,
            0,
            firstBytes.Length);
        Array.Copy(
            fileBytes,
            0,
            contentBytes,
            firstBytes.Length,
            fileBytes.Length);
        Array.Copy(
            lastBytes,
            0,
            contentBytes,
            firstBytes.Length + fileBytes.Length,
            lastBytes.Length);

        return contentBytes;
  }
 
And then I use it like this:
 
HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, url);
requestMessage.Content = new ByteArrayContent(concat);
requestMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("multipart/form-data");
requestMessage.Content.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("boundary", boundary));
var response = await client.SendAsync(requestMessage);
var content = await response.Content.ReadAsStringAsync();
 
The idea and second function I got from this article.