我写了以下函数,大约95%的时间都有效,但我需要它100%工作(显然):
Public Shared Function getPassedVars() As String Const keyCount As Integer = 54 ' 54 seems to be the number of parameter keys passed by default (for this web_app). ' there are more if there is a form involved (ie. from search page) Dim oParams As String = "" Try With HttpContext.Current If .Request.Params.AllKeys.Count > keyCount Then For i As Integer = 0 To (.Request.Params.AllKeys.Count - (keyCount + 1)) oParams &= String.Format("{0}={1}{2}", .Request.Params.Keys.Item(i), .Request.Params(i), IIf(i < .Request.Params.AllKeys.Count - (keyCount + 1), ";", "")) Next End If End With Return oParams Catch ex As Exception Return Nothing End Try End Function
它擦除了Request.Params
传递变量的对象,这些变量位于数组的开头(其余的是ASP参数).我很确定我已经看到了获得这些参数的不同方法,但我无法弄明白.有什么建议?
所以看起来我可以使用它Request.URL.Query
来实现这一点,我会调查这个并发回.
这是我想出的:
Public Shared Function getPassedVars() As String Dim oParams As String = "" Dim qString As String = "" Dim oSplit As New List(Of String) Try With HttpContext.Current qString = .Request.Url.Query If qString.Length > 0 Then 'do we have any passed variables? If qString.StartsWith("?") Then qString = qString.Remove(0, 1) 'remove leading ? from querystring if it is there oSplit.AddRange(qString.Split("&")) For i As Integer = 0 To oSplit.Count - 1 oParams &= String.Format("{0}{1}", oSplit.Item(i), IIf(i < oSplit.Count - 1, ";", "")) Next Return oParams Else Return Nothing End If End With Catch ex As Exception Return Nothing End Try End Function
到现在为止还挺好.
Request.QueryString是一个NameValueCollection,因此获取"参数"的最简单方法是执行以下操作:
foreach (String s in Request.QueryString) { Response.Write(s + " = " + Request.QueryString[s]); }
你的职能在哪里?如果它在页面的代码中执行,那么你肯定不需要使用HttpContext变量.
看起来您正在尝试从查询字符串中获取值.
例如,对于此URL: -
http://www.tempuri.org/mypage.aspx?param1=x¶m2=y
我假设你想要检索查询字符串参数param1和param2的值?
如果是这样,只需使用: -
Dim param1 as String = Request.QueryString("param1")
否则,如果这些参数包含在表单中(HTTP POST请求),则使用Mitchel Sellers建议的方法.