很简单的Silverlight文件上载例如[关闭](Very simple Silverlight

我在寻找一个非常例如文件上传代码snipplet / Silverlight中的解决方案。做完搜索，我发现许多控制/项目，但他们都是相当复杂; 支持多文件上传，文件上传进度，图像重采样和大量的类。

我在寻找短，清洁，易于理解的代码最简单的可能方案。

Answer 1:

此代码是很短，（希望）很容易理解：

public const int CHUNK_SIZE = 4096; 
public const string UPLOAD_URI = "http://localhost:55087/FileUpload.ashx?filename={0}&append={1}"; 
private Stream _data; 
private string _fileName; 
private long
_bytesTotal; 
private long _bytesUploaded;   
private void UploadFileChunk() 
{
    string uploadUri = ""; // Format the upload URI according to wether the it's the first chunk of the file
    if (_bytesUploaded == 0)
    {
        uploadUri = String.Format(UPLOAD_URI,_fileName,0); // Dont't append
    }
    else if (_bytesUploaded < _bytesTotal)
    {
        uploadUri = String.Format(UPLOAD_URI, _fileName, 1); // append
    }
    else
    {
        return;  // Upload finished
    }

    byte[] fileContent = new byte[CHUNK_SIZE];
    _data.Read(fileContent, 0, CHUNK_SIZE);

    WebClient wc = new WebClient();
    wc.OpenWriteCompleted += new OpenWriteCompletedEventHandler(wc_OpenWriteCompleted);
    Uri u = new Uri(uploadUri);
    wc.OpenWriteAsync(u, null, fileContent);
    _bytesUploaded += fileContent.Length; 
}   

void wc_OpenWriteCompleted(object sender, OpenWriteCompletedEventArgs e) 
{
    if (e.Error == null)
    {   
        object[] objArr = e.UserState as object[];
        byte[] fileContent = objArr[0] as byte[];
        int bytesRead = Convert.ToInt32(objArr[1]);
        Stream outputStream = e.Result;
        outputStream.Write(fileContent, 0, bytesRead);
        outputStream.Close();
        if (_bytesUploaded < _bytesTotal)
        {
            UploadFileChunk();
        }
        else
        {
            // Upload complete
        }
    } 
}

对于一个完整的解决方案下载上看到这个我的博客文章：在Silverlight文件上传-一个简单的解决方案

Answer 2:

看看这个项目http://simpleuploader.codeplex.com/ 。它允许您将多个文件上传到自己的服务器的代码非常-非常几行。

Answer 3:

请参考这篇文章。本文介绍如何上传单个文件用一个非常简单的用户界面，并解释每一个步骤。 http://aspilham.blogspot.com/2010/04/file-upload-in-chunks-using-silverlight.html