HttpRequest.QueryString Property

Definition

Namespace:
System.Web
Assembly:
System.Web.dll

Gets the collection of HTTP query string variables.

public:
 property System::Collections::Specialized::NameValueCollection ^ QueryString { System::Collections::Specialized::NameValueCollection ^ get(); };
public System.Collections.Specialized.NameValueCollection QueryString { get; }
member this.QueryString : System.Collections.Specialized.NameValueCollection
Public ReadOnly Property QueryString As NameValueCollection

Property Value

NameValueCollection

The query string variables sent by the client. Keys and values are URL-decoded.

Examples

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[String].

string fullname1 = Request.QueryString["fullname"];  
string fullname2 = Request["fullname"];  
  

Dim fullname1 As String = Request.QueryString("fullname")  
Dim fullname2 As String = Request("fullname")

Applies to

See also