如何取得台灣銀行牌告匯率csv檔?

由於此csv 是經由台灣銀行Download.ashx 去控制下載
而需傳入日期參數 ex. date=2009-05-13T17:01:06
而檔案每過一會就會更新，如何取得最新的檔案呢??

我們可透過截取html碼 再去分割出所要的部份去完成

完整程式碼如下

Partial Class _Default
    Inherits System.Web.UI.Page
    Dim strTemp, str As String
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim url As String = "http://rate.bot.com.tw/Pages/Static/UIP003.zh-TW.htm"

        Dim request As Net.WebRequest = Net.WebRequest.Create(url)
        Dim response5 As Net.WebResponse
        response5 = request.GetResponse()
        '宣告WebRequest物件
        Dim myRequest5 As System.Net.WebRequest = System.Net.WebRequest.Create(url)
        '取得網頁資訊流
        Dim myResponse5 As System.Net.WebResponse = myRequest5.GetResponse()
        '宣告StreamReader讀取資料
        Dim sr5 As System.IO.StreamReader = New System.IO.StreamReader(myResponse5.GetResponseStream(), System.Text.Encoding.Default)
        '資料讀取到字串變數中
        Dim content5 As String = sr5.ReadToEnd()
        '關閉StreamReader
        sr5.Close()
        '關閉連線
        myResponse5.Close()

        strTemp = Split(content5, "下載 Excel 檔")(0)
        strTemp = Split(strTemp, "/Pages/")(UBound(Split(strTemp, "/Pages/")))

        str = str & strTemp
        str = str.ToString.Substring(0, str.Length - 10)
        str = "http://rate.bot.com.tw/Pages/" & str

    End Sub
End Class

因為有網友反應，故在此附上此程式原始檔~並己編譯成exe
請按這裡下載