private string DownloadURL(IEnumerable <string> ids, System.DateTime fromDate, System.DateTime toDate, HistQuotesInterval interval)
{
string[] idArr = MyHelper.EnumToArray(ids);
if (idArr.Length == 0)
{
throw new ArgumentNullException("unmanagedIDs", "The passed list is empty");
}
else
{
if (idArr.Length == 1)
{
if (idArr[0].Trim() == string.Empty)
{
throw new ArgumentNullException("id", "The passed ID is empty.");
}
else
{
System.Text.StringBuilder url = new System.Text.StringBuilder();
url.Append("http://ichart.yahoo.com/table.csv?s=");
url.Append(Uri.EscapeDataString(MyHelper.CleanYqlParam(FinanceHelper.CleanIndexID(idArr[0]).ToUpper())));
url.Append("&a=");
url.Append(fromDate.Month - 1);
url.Append("&b=");
url.Append(fromDate.Day);
url.Append("&c=");
url.Append(fromDate.Year);
url.Append("&d=");
url.Append(toDate.Month - 1);
url.Append("&e=");
url.Append(toDate.Day);
url.Append("&f=");
url.Append(toDate.Year);
url.Append("&g=");
url.Append(FinanceHelper.GetHistQuotesInterval(interval));
url.Append("&ignore=.csv");
return(url.ToString());
}
}
else
{
System.Text.StringBuilder url = new System.Text.StringBuilder();
url.Append("url in (");
for (int i = 0; i <= idArr.Length - 1; i++)
{
url.Append('\'');
url.Append(this.DownloadURL(new string[] { MyHelper.CleanYqlParam(FinanceHelper.CleanIndexID(idArr[i]).ToUpper()) }, fromDate, toDate, interval));
url.Append('\'');
if (i < idArr.Length - 1)
{
url.Append(',');
}
}
url.Append(")");
return(MyHelper.YqlUrl("*", "csv", url.ToString(), null, true));
}
}
}