HttpRequest.QueryString Property
.NET Framework (current version)
Gets the collection of HTTP query string variables.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System.Collections.Specialized.NameValueCollectionThe query string variables sent by the client. Keys and values are URL-decoded.
The following code example shows two ways to get the value of a query string variable named “fullname”. In each case, if the URL is http://www.contoso.com/default.aspx?fullname=Fadi%20Fakhouri, then the value returned is "Fadi Fakhouri" because the %20 is URL-decoded into a space character. If the URL doesn’t have a fullname query string ID, the returned value would be null.
The first line of code looks for the key “fullname” only in the query string; the second line looks for the key “fullname” in all of the HTTP request collections. For more information about the second line, see Item.
.NET Framework
Available since 1.1
Available since 1.1
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