Question

I am trying to retrieve the file from sharepoint to local hard disk.

Here is my code:

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();

When I am trying to open that file, it is showing as a corrupted file.

The original file size is 186kb, after download the file size is 191kb.

What is the solution to download the file from sharepoint..?

Answer 1

You do not need the 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);
    }
  }
}