Download fle from Internet in Windows App 2

[DarwinIT]

How can I do this? Httprequest, according to what I'm reading, only works in a web environment. I need to automate the updating of tax information from the state for a client.

 

[JurkMonkey]

WebClient

http://msdn.microsoft.com/en-us/library/system.net.webclient(VS.80).aspx

http://www.ubuntu.com/

 

[jmeckley]

this was one of the top google links

http://www.codeproject.com/KB/dotnet/usingaspruntime.aspx

once you get the http response. pipe the stream into something you can use. parse the data from there.

Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[DarwinIT]

Thanks guys. This was surprisingly easy.
(For a change, something on MSDN actually helped me!!)

I had a problem in that it was a zip file and was corrupted. I switched to writing a byte array instead of a string - and I'm good to go!!
Thanks again.


using System;
using System.Net;
using System.IO;

public class Test
{
public bool RetrieveFile(string fileURL,string fileLocation)
{

try
{
WebClient client = new WebClient();

// Add a user agent header in case the
// requested URI contains a query.


client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705");

Stream data = client.OpenRead(fileURL);
// StreamReader reader = new StreamReader(data);
// StreamWriter writer = new StreamWriter(fileLocation,false);

/*
string s = reader.ReadToEnd();
writer.WriteLine(s);
data.Close();
reader.Close();
writer.Close();
return true;
*/

int offset = 0;
byte[] buffer = new byte[1000];
int size;
FileStream fileStream = new FileStream(fileLocation, FileMode.Create, FileAccess.Write);
int count = buffer.Length;
do
{

// read into buffer
size = data.Read(buffer, offset, count);
// write into the filestream
fileStream.Write(buffer, offset, size);
} while (size > 0);


data.Close();
fileStream.Flush();
fileStream.Close();
return true;

}
catch (Exception ex)
{
string errorMessage = ex.Message;
return false;
}

}
}

 

[jmeckley]

i would make 1 suggestion.

try
{
   WebClient client = new WebClient();
   client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");

   using(Stream data = client.OpenRead(fileURL))
   {
      int offset = 0;
      byte[] buffer = new byte[1000];
      int size;
      using(FileStream fileStream = new FileStream(fileLocation, FileMode.Create, FileAccess.Write))
      {
         int count = buffer.Length;
         do
         {
            size = data.Read(buffer, offset, count);
            fileStream.Write(buffer, offset, size);
         } while (size > 0);
         fileStream.Flush();
      }
   }
   return true;
}
catch (Exception ex)
{
   string errorMessage = ex.Message;
   return false;
}

the using statements will automatically close/dispose the streams if an exception is thrown. with your code above they streams would not be closed/disposed.

Jason Meckley
Programmer
Specialty Bakers, Inc.