Unable to open CSV file from internet using C#

Question

I\'m new with C#. I\'ve written code to open a CSV file from my documents on my local machine. It works well and the data parsing works. Trouble is when I change the code to ope

Answer 1

Another option is to download data as you're doing, and then wrap it with a MemoryStream:

WebClient wc = new WebClient();
byte[] data = wc.DownloadData(
    "http://www.datasource.com/apps/qt/csv/pricehistory.ac?section=yearly_price_download&code=XXX");

using (var ms = new MemoryStream(data))
{
    using (var reader = new StreamReader(ms))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {
            // do whatever
        }
    }
}

The advantage of this over splitting the string is that it uses considerably less memory.

Answer 2

Your code as pasted would not compile. You can however use the WebClient to download to a string, then split the string into lines:

string content;
using(WebClient wc = new WebClient())
content = wc.DownloadString("http://www.datasource.com/apps/qt/csv/pricehistory.ac?section=yearly_price_download&code=XXX");

foreach(var line in content.Split(new string [] {Environment.NewLine}, StringSplitOptions.None))
{
    //...
}