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HttpRequest.QueryString Property

Gets the collection of HTTP query string variables.

Namespace:  System.Web
Assembly:  System.Web (in System.Web.dll)

'Declaration
Public ReadOnly Property QueryString As NameValueCollection

Property Value

Type: System.Collections.Specialized.NameValueCollection
A NameValueCollection containing the collection of query string variables sent by the client. For example, If the request URL is http://www.contoso.com/default.aspx?id=44 then the value of QueryString is "id=44".

The following code example accepts the query string from a client form (with a GET method attribute) and writes out the names and values of each named input element on the form. Place this code on the ASP.NET page referenced by the form's ACTION attribute.


Dim loop1, loop2 As Integer
 Dim arr1(), arr2() As String
 Dim coll As NameValueCollection

' Load Form variables into NameValueCollection variable.
coll=Request.QueryString 
' Get names of all keys into a string array.
arr1 = coll.AllKeys 
For loop1 = 0 To arr1.GetUpperBound(0)
   Response.Write("Key: " & Server.HtmlEncode(arr1(loop1)) & "<br>")
   ' Get all values under this key.
   arr2 = coll.GetValues(loop1)  
    For loop2 = 0 To arr2.GetUpperBound(0)
       Response.Write("Value " & CStr(loop2) & ": " & Server.HtmlEncode(arr2(loop2)) & "<br><br>")
    Next loop2
 Next loop1
   


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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