asp.Net銀行通貨為替レートを取得するコード

 
  
class ExchangeRate 
  
{ 
  
 
  
private const string _BASEURL = "    "; 
  
public const string CURRENCYCODE = "     '|'  ";//     
  
 
  
public Hashtable GetValues() 
  
{ 
  
Hashtable htReturn = new Hashtable(); 
  
 
  
string url = _BASEURL; //+ HttpUtility.UrlEncode(tmSet.ToString("yyyy/MM/dd", DateTimeFormatInfo.InvariantInfo)); 
  
 
  
WebClient wc = new WebClient(); 
  
string sHtml = wc.DownloadString(url); 
  
string sXml = string.Empty; 
  
int iValueCnt = CURRENCYCODE.Split(new char[] { '|' }, 10, StringSplitOptions.RemoveEmptyEntries).Length; 
  
string[] sTBody = sHtml.Split(new string[] { "", "" }, StringSplitOptions.RemoveEmptyEntries); 
  
foreach (string ss in sTBody) 
  
{ 
  
if (ss.Contains("Currency Name")) 
  
{ 
  
string[] sbrs = ss.Split(new string[] { "" }, StringSplitOptions.RemoveEmptyEntries); 
  
foreach (string sbr in sbrs) 
  
{ 
  
string scur = string.Empty; 
  
double dRate = GetCurrencyRate(sbr, out scur); 
  
 
  
if (dRate != 0.0 && !string.IsNullOrEmpty(scur)) 
  
{ 
  
htReturn.Add(scur, dRate * 0.01); 
  
if (htReturn.Count >= iValueCnt) 
  
break; 
  
} 
  
} 
  
break; 
  
} 
  
} 
  
 
  
 
  
return htReturn; 
  
} 
  
 
  
private double GetCurrencyRate(string source, out string sCurrency) 
  
{ 
  
sCurrency = string.Empty; 
  
 
  
string sPattern = @"(.+?)"; 
  
foreach (Match m in Regex.Matches(source, sPattern)) 
  
{ 
  
string ss = m.Groups[1].Value; 
  
if (IsNumeric(ss)) 
  
return double.Parse(ss); 
  
else 
  
{ 
  
if (CURRENCYCODE.Contains(ss)) 
  
sCurrency = ss.Trim(); 
  
else 
  
break; 
  
} 
  
} 
  
 
  
return 0.0; 
  
} 
  
 
  
public static bool IsNumeric(string str) 
  
{ 
  
if (string.IsNullOrEmpty(str)) return false; 
  
 
  
System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex(@"^[-]?\d+[.|,]?\d*$"); 
  
return reg.IsMatch(str); 
  
} 
  
}