Question

可能重复：
Unable to open CSV file from internet using C#

我编写此代码来打开并解析CSV文件。当我从硬盘驱动器上的文件夹中打开文件时，它可以正常工作。我更改了第24 - 26行的代码以从网站打开文件。我收到错误消息＆＃34;不支持URI格式＆＃34; 来自附加代码的第27行。我可以使用VBA打开文件。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //
            // Read in a file line-by-line, and store it all in a List.
            //
            int i = 0;
            DateTime dte;
            List<string> list = new List<string>();
            float[] Prices = new float[4];

            WebClient wc = new WebClient();

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

            using (StreamReader reader = new StreamReader(wc))
            {
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    //list.Add(line); // Add to list.
                    Console.WriteLine(line); // Write to console.

                    string[] parts = line.Split(',');
                    int DateSetter = 1;
                    int DateDone = 0;
                    int CountFloat = 0;
                    int PricesDone = 0;
                    Double Volume = 0;

                    foreach (string part in parts)
                    {
                        Console.WriteLine("{0} : {1}", i, part);

                        if (DateSetter == 1)
                        {
                            dte = DateTime.Parse(part);
                            DateSetter = 2;
                            Console.WriteLine(dte);
                        }
                        if (DateDone == 1)
                        {
                            if (DateSetter < 6)
                            {
                                Prices[CountFloat] = float.Parse(part);
                                CountFloat++;
                                DateSetter++;
                                Console.WriteLine(Prices[3]);
                            } 
                        }
                        DateDone = 1;
                        if (PricesDone == 1)
                        {
                            Volume = double.Parse(part);
                            Console.WriteLine(Volume);
                        }
                        if (DateSetter == 6)
                        {
                            PricesDone = 1;
                        }
                    }



            }
       }
        Console.ReadLine();
    }
}

}

Answer 1

你可以直接替换

byte[] data = wc.DownloadData

用

String data = wc.DownloadString

如果您的请求不是很大。这将简化所有程序。

无法从网站打开CSV文件

1 个答案: