blocks|key|690320|text|这段代码非常简短，(希望)很容易理解：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|690321|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+%2B=+new+OpenWriteCompletedEventHandler(wc_OpenWriteCompleted);
++++Uri+u+=+new+Uri(uploadUri);
++++wc.OpenWriteAsync(u,+null,+fileContent);
++++_bytesUploaded+%2B=+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
++++++++}
++++}+
}|code-block|syntax|javascript|690322|有关完整的可下载解决方案，请参阅我的博客文章：File+Upload+in+Silverlight+-+a+Simple+Solution|offset|length|690323|entityMap|0|LINK|mutability|MUTABLE|url|http://gregdoesit.com/2009/10/file-upload-in-silverlight-a-simple-solution/^0|0|0|N|1A|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

This code is pretty short and (hopefully) easy to understand:

<pre><code>public const int CHUNK_SIZE = 4096; 
public const string UPLOAD_URI = "http://localhost:55087/FileUpload.ashx?filename={0}&amp;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 &lt; _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 &lt; _bytesTotal)
 {
 UploadFileChunk();
 }
 else
 {
 // Upload complete
 }
 } 
}
</code></pre>

For a complete downloadable solution see my blog post on this: <a href="http://gregdoesit.com/2009/10/file-upload-in-silverlight-a-simple-solution/" rel="noreferrer">File Upload in Silverlight - a Simple Solution</a>

blocks|key|690335|text|查看此项目http://simpleuploader.codeplex.com/。它允许你用很少的代码行就能上传多个文件到你的服务器上。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|690336|entityMap|0|LINK|mutability|MUTABLE|url|http://simpleuploader.codeplex.com/^0|5|Z|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Check out this project <a href="http://simpleuploader.codeplex.com/" rel="nofollow">http://simpleuploader.codeplex.com/</a>. It's allows you to upload multiple files to your server with very-very few lines of code.

blocks|key|690361|text|请参考这篇文章。本文展示了如何使用非常简单的UI上传单个文件，并对每个步骤进行了说明。http://aspilham.blogspot.com/2010/04/file-upload-in-chunks-using-silverlight.html|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|690362|entityMap|0|LINK|mutability|MUTABLE|url|http://aspilham.blogspot.com/2010/04/file-upload-in-chunks-using-silverlight.html^0|17|29|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Please refer to this article. This article shows how to upload single file with a very simple UI and explanation to each step.
<a href="http://aspilham.blogspot.com/2010/04/file-upload-in-chunks-using-silverlight.html" rel="nofollow">http://aspilham.blogspot.com/2010/04/file-upload-in-chunks-using-silverlight.html</a>

I'm looking for a very example file upload code snipplet/solution in Silverlight. Having done search I've found numerous controls/projects but all of them were quite complex; supporting multiple file upload, file upload progress, image re-sampling and lots of classes.

I'm looking for the simplest possible scenario with short, clean and easy to understand code.

Very simple Silverlight File Upload example

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在寻找Silverlight中的一个非常典型的文件上传代码片段/解决方案。做过搜索后，我找到了许多控件/项目，但它们都相当复杂；支持多个文件上传、文件上传进度、图像重新采样和许多类。我正在寻找最简单的场景与简短，干净，易于理解的代码。

问非常简单的Silverlight文件上传示例
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