Question

我正在编写一个ASP应用程序，其中用户数据将存储在cookie中（在24小时后到期），并且当程序运行时，它应该搜索该cookie，并将cookie中的任何内容添加到当前用户的值，然后继续通过代码。

Dim I As Integer  ' iterator for cookie search
        Dim foundcookie As Boolean = False ' flag if cookie found
    Dim stakenow As Integer ' current stake held here
    stakenow = stake.Text
    Dim currentname As String
    currentname = name.Text
    For I = 0 To Request.Cookies.Count - 1
        If Request.Cookies.Item(I).Name = currentname Then
            foundcookie = True
            stakenow = stakenow + Request.Cookies.Item(I).Value
            currentstake.Text = currentstake.Text + stakenow.ToString
            Request.Cookies.Item(I).Value = stakenow.ToString
            Request.Cookies.Item(I).Expires = DateTime.Now.AddHours(24)
        End If
    Next
    If Not foundcookie Then
        Dim nameCookie As New HttpCookie(currentname)
        nameCookie.Value = stakenow.ToString
        nameCookie.Expires = DateTime.Now.AddHours(24)
        Response.Cookies.Add(nameCookie)
        currentstake.Text = currentstake.Text + stakenow.ToString
    End If

此代码有效，第一次，它创建一个带有值的cookie，比如说150.然后下次运行代码并且用户＆＃34;赌注＆＃34;他们再次输入150，当前的赌注更新为300.但是第三次运行，如果用户输入100，我们希望用户现在的赌注是400，但是只有250.我看到这个错误来自于更新后的值未正确写回cookie，因此添加仅来自创建cookie时的原始值以及键入的值。我尝试过使用请求和响应cookie但没有运气。有什么建议吗？

Answer 1

使用HttpCookieCollection.Set Method以便更新的cookie返回客户端：

    SELECT     Name
    ,          SUM(Quota) Quota
    FROM       (
                   SELECT DISTINCT T1.[Name], 
                   T0.[U_pptQuota] AS [Quota]
                   FROM OHEM T0 
                   INNER JOIN OUBR T1 
                   ON T0.[branch] = T1.[Code]
                   LEFT JOIN OINV T2 
                   ON T0.[empID] = T2.[OwnerCode] 
                   LEFT JOIN INV1 T3 
                   ON T2.[DocEntry] = T3.[DocEntry] 
               ) DIS

aspx.vb cookie值访问和更新

1 个答案: