WebService.Application Property (System.Web.Services)

Application Property

.NET Framework Class Library

WebService..::.Application Property

Gets the application object for the current HTTP request.

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

Syntax

Visual Basic (Declaration)

<BrowsableAttribute(False)> _
Public ReadOnly Property Application As HttpApplicationState

Visual Basic (Usage)

Dim instance As WebService
Dim value As HttpApplicationState

value = instance.Application

[BrowsableAttribute(false)]
public HttpApplicationState Application { get; }

Visual C++

[BrowsableAttribute(false)]
public:
property HttpApplicationState^ Application {
    HttpApplicationState^ get ();
}

JScript

public function get Application () : HttpApplicationState

Property Value

Type: System.Web..::.HttpApplicationState
An HttpApplicationState object.

Remarks

XML Web services can use both application state and session state. Application state is maintained across all sessions accessing an XML Web service regardless of whether session state is turned off for a method(by using the EnableSession property of the WebMethodAttribute).

Examples

The example below demonstrates a hit counter, incrementing the count every time a browser calls the XML Web service method.

Visual Basic

<%@ WebService Language="VB" Class="Util"%>

Imports System.Web.Services

Public Class Util
    Inherits WebService

    <WebMethod(Description := "Application Hit Counter", _
        EnableSession := False)> _
    Public Function HitCounter() As Integer

        If Application("HitCounter") Is Nothing Then
            Application("HitCounter") = 1
        Else
            Application("HitCounter") = CInt(Application("HitCounter")) + 1
        End If
        Return CInt(Application("HitCounter"))
    End Function
End Class

<%@ WebService Language="C#" Class="Util"%>
 using System.Web.Services;

 public class Util: WebService {
   [ WebMethod(Description="Application Hit Counter",EnableSession=false)]
    public int HitCounter() {
       if (Application["HitCounter"] == null) {
          Application["HitCounter"] = 1;
       }
       else {
          Application["HitCounter"] = ((int) Application["HitCounter"]) + 1;
          }
       return ((int) Application["HitCounter"]);
    }   
 }

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

Version Information

.NET Framework

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

Reference

WebService Class

WebService Members

System.Web.Services Namespace

HttpApplicationState