how can I put in a procedure to download a file

how can I put in a procedure to download a file

• Pairair

  thanks for your reply  -  I will look at this further  -  my first attempts at using this are not very successful.  My intention would be to be able to have the user select a directory where the file will be downloaded into and have a window that comes up when a file is  downloaded like the window that normally comes up asking for the directory and then showing the progress and finally the download Complete indication - just as every other download works

   

  thanks

  
  

• Greg1

  I think the problem may exist in having the file ( a simple test.zip ) located in the App_Data folder - When I created another folder in the project call "downloads" and moved the file there I did not get the 403 error. Things worked like I wanted them to -  so I guess I can move on  - I assume that the App_Data folder has special properties that prevents me from doing this.

  thanks for all your help

   

   

  
  

• Oya ORER

  He is also right. The function I provided you with lets the user download a file from a specified location, TO a specified location.
  
  

• DentonChris

  Place your files in a download folder, and give your internet users access to the folder. You can post links to files in this folder, and if a user clicks on one of these links, IE wil automatically prompt the user with the download dialog.
  
  

• Lesley-Ann Vaughan

  I usually dont post any replys because I am not an expert, but I think I could help you on this. The following code will be the download function. You may just copy and past it. Remember to add the namespaces. I dont know if this is what you are looking for, but please reply and let me know if it helped.

  using System.IO; & using System.Net;

  public static int DownloadFile(String remoteFilename,
                                 String localFilename)
  {
    // Function will return the number of bytes processed // to the caller. Initialize to 0 here.
    int bytesProcessed = 0;
  
    // Assign values to these objects here so that they can
    // be referenced in the finally block
    Stream remoteStream  = null;
    Stream localStream   = null;
    WebResponse response = null;
  
    // Use a try/catch/finally block as both the WebRequest and Stream
    // classes throw exceptions upon error
    try
    {
      // Create a request for the specified remote file name
      WebRequest request = WebRequest.Create(remoteFilename);
      if (request != null)
      {
        // Send the request to the server and retrieve the
        // WebResponse object
        response = request.GetResponse();
        if (response != null)
        {
          // Once the WebResponse object has been retrieved,
          // get the stream object associated with the response's data
          remoteStream = response.GetResponseStream();
  
          // Create the local file
          localStream = File.Create(localFilename);
  
          // Allocate a 1k buffer
          byte[] buffer = new byte[1024];
          int bytesRead;
  
          // Simple do/while loop to read from stream until
          // no bytes are returned
          do
          {
            // Read data (up to 1k) from the stream
            bytesRead = remoteStream.Read (buffer, 0, buffer.Length);
  
            // Write the data to the local file
            localStream.Write (buffer, 0, bytesRead);
  
            // Increment total bytes processed
            bytesProcessed += bytesRead;
          } while (bytesRead > 0);
        }
      }
    }
    catch(Exception e)
    {
      Console.WriteLine(e.Message);
    }
    finally
    {
      // Close the response and streams objects here
      // to make sure they're closed even if an exception
      // is thrown at some point
      if (response     != null) response.Close();
      if (remoteStream != null) remoteStream.Close();
      if (localStream  != null) localStream.Close();
    }
  
    // Return total bytes processed to caller.
    return bytesProcessed;
  }
  

  Finally, here's an example of using the DownloadFile function.

  int read = DownloadFile("http://www.mysite.com/problem1.jpg",
              "d:\\test.jpg");
  Console.WriteLine("{0} bytes written", read);
  

  
  
  

• blaineca

  When I try this I am getting the error: HTTP Error 403 - Forbidden.

  In the properties for the folder where this file exists ( App_Data ), on the Shering Tab, I set it to "Share this Folder" but no luck - still get the error

  I tried adding ASP.NET ( machine account ) on the Security Tab to have Read and Execute but still no luck  -  right now I am just trying this in VS2005 locally and cannot get it to work  -   How do I give access to this file

  thanks

  
  
• how can I put in a procedure to download a file