vb.net中url上的string.format

Question

我试图在URL上使用string.format将多个值传递给字符串。 这可能是一个简单的错误，但是我无法使以下代码正常工作。 它甚至不构建字符串。 有任何想法吗？

谢谢！

Public Sub getStockData()
    Dim client As New WebClient()
    Dim url As String
    Dim ticker As String = "MSFT"
    Dim lastPrice As String = "l1"
    Dim volume As String = "v0"
    Dim marketCap As String = "j1"
    Dim divYield As String = "x"
    Dim peRatio As String = "r"
    Dim eps As String = "e"

    url = String.Format("http://finance.yahoo.com/d/quotes.csv?s={0}&f={1}{2}{3}{4}{5}{6}", ticker, lastPrice, marketCap, divYield, peRatio, eps)
    Dim results As String = client.DownloadString(url)
    messagebox.show(results)
End Sub

Answer 1

您有7个要插入的值（格式化项目{0}至{6}），但仅提供其中六个：

url = String.Format(
    "http://finance.yahoo.com/d/quotes.csv?s={0}&f={1}{2}{3}{4}{5}{6}", 
    ticker, lastPrice, marketCap, divYield, peRatio, eps)

名为“ volume”的变量未使用...

编辑：使用@SpectralGhost指出的官方MS术语“格式项”！