如何以编程方式从Sharepoint文档库下载文件

Question

在按钮单击事件或链接按钮单击时，我想从SharePoint文档库下载文档并将其保存到用户的本地磁盘。

PLZ帮我在这，如果您有任何代码示例，那么请分享

Answer 1

输出到文件的直接链接的问题是，对于某些内容类型，它可能只是在浏览器窗口中打开。如果这不是理想的结果，并且您想强制保存文件对话框，则需要编写一个ASP/PHP页面，您可以通过查询字符串传递文件名。然后该页面可以读取该文件并在响应上设置一些标题以指示内容处置是和附件。

对于ASP.net，如果创建一个名为download.aspx一个简单的aspx页面，添加以下代码，然后把这个文件在服务器上的某个地方，你可以通过调用这个页面这样的下载文件：

http://yourserveraddress/download.aspx?path=http://yoursharepointserver/pathtodoclibrary/file.ext

protected void Page_Load(object sender, EventArgs e) 
    { 
     string path = ""; 
     string fileName = ""; 

     path = Request.QueryString["path"]; 
     if (path != null && path.Length > 0) 
     { 
      int lastIndex = path.LastIndexOf("/"); 
      fileName = path.Substring(lastIndex + 1, (path.Length - lastIndex - 1)); 

      byte[] data; 
      data = GetDataFromURL(path); 

      Response.Clear(); 
      Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName); 
      Response.BinaryWrite(data); 
      Response.Flush(); 
     } 
    } 


    protected byte[] GetDataFromURL(string url) 
    { 
     WebRequest request = WebRequest.Create(url); 
     byte[] result; 
     byte[] buffer = new byte[4096]; 

     //uncomment this line if you need to be authenticated to get to the files on SP 
     //request.Credentials = new NetworkCredential("username", "password", "domain"); 

     using (WebResponse response = request.GetResponse()) 
     { 
      using (Stream responseStream = response.GetResponseStream()) 
      { 
       using (MemoryStream ms = new MemoryStream()) 
       { 
        int count = 0; 
        do 
        { 
         count = responseStream.Read(buffer, 0, buffer.Length); 
         ms.Write(buffer, 0, count); 
        } while (count != 0); 
        result = ms.ToArray(); 
       } 
      } 
     } 
     return result; 
    } 

Answer 2

我想创建一个LinkBut​​ton和设置的URL文档的URL编程。