将SPFile保存到本地硬盘

Question

我正在尝试从sharepoint检索文件到本地硬盘。

这是我的代码：

SPFile file = web.GetFile("http://localhost/Basics.pptx");                
byte[] data = file.OpenBinary();
FileStream fs = new FileStream(@"C:\Users\krg\Desktop\xyz.pptx",FileMode.Create,FileAccess.Write);

BinaryWriter w = new BinaryWriter(fs);            
w.Write(data, 0, (int)file.Length);            
w.Close();            
fs.Close();

当我试图打开该文件时，它将显示为一个损坏的文件。

原始文件大小为186 is，下载后文件大小为191 is。

从sharepoint..下载文件的解决方案是什么？

Answer 1

您不需要BinaryWriter：

int size = 10 * 1024;
using (Stream stream = file.OpenBinaryStream())
{
  using (FileStream fs = new FileStream(@"C:\Users\krg\Desktop\xyz.pptx", FileMode.Create, FileAccess.Write))
  {
    byte[] buffer = new byte[size];
    int bytesRead;
    while((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0)
    {
      fs.Write(buffer, 0, bytesRead);
    }
  }
}

Answer 2

只是对这个答案的一点贡献。最好检查每个区块中读取的字节数，以便写入的流将是从SharePoint读取的流的确切副本。见下面的更正。

int size = 10 * 1024;
using (Stream stream = file.OpenBinaryStream())
{  
 using (FileStream fs = new FileStream(@"C:\Users\krg\Desktop\xyz.pptx", FileMode.Create, FileAccess.Write))
 {
   byte[] buffer = new byte[size];
   int nbBytesRead =0;
   while((nbBytesRead=stream.Read(buffer, 0, buffer.Length)) > 0) 
   {
      fs.Write(buffer, 0, nBytesRead);
   }
 }
}