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HttpRequest.AppRelativeCurrentExecutionFilePath Property

Gets the virtual path of the application root and makes it relative by using the tilde (~) notation for the application root (as in "~/page.aspx").

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

'Declaration
Public ReadOnly Property AppRelativeCurrentExecutionFilePath As String
'Usage
Dim instance As HttpRequest
Dim value As String

value = instance.AppRelativeCurrentExecutionFilePath

/** @property */
public String get_AppRelativeCurrentExecutionFilePath ()

public function get AppRelativeCurrentExecutionFilePath () : String

Not applicable.

Property Value

The virtual path of the application root for the current request.

Use this property to provide URL information that will stay the same even if the application changes location. This allows the same URL-mapping code to be used in a test environment and in the final deployment environment, or to be used by copies of Web applications in different domains.

The following example uses the AppRelativeCurrentExecutionFilePath property to set the URL of an Image control to an image in the same directory as the page. Run this page at different levels of a directory structure to see the resulting AppRelativeCurrentExecutionFilePath property values.

<%@ Page Language="VB"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<script runat="server">
  
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        ' Get an image that is in the same directory as the currently executing control.
        Image1.ImageUrl = VirtualPathUtility.GetDirectory( _
            Request.AppRelativeCurrentExecutionFilePath) + "image1.jpg"
        Label1.Text = "App-relative Image URL = " + Image1.ImageUrl
    End Sub
    
</script>

<head id="Head1" runat="server">
    <title>HttpRequest AppRelativeCurrentExecutionFilePath</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
          <asp:Image ID="Image1" runat="server" /><br />
            <asp:Label ID="Label1" runat="server" />
        </div>
    </form>
</body>
</html>

The following example uses the AppRelativeCurrentExecutionFilePath property to programmatically set the path to a resource, based on the current path of the page.

<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Label1.Text = Request.ApplicationPath
        Image1.ImageUrl = Request.ApplicationPath + "/images/Image1.gif"
        Label2.Text = Image1.ImageUrl
        
        Label3.Text = Request.AppRelativeCurrentExecutionFilePath
        If (VirtualPathUtility.GetDirectory( _
            Request.AppRelativeCurrentExecutionFilePath).Equals( _
            "~/Members/")) _
        Then
            Image2.ImageUrl = Request.ApplicationPath & _
                "/memberimages/Image1.gif"
        Else
            Image2.ImageUrl = Request.ApplicationPath & _
                "/guestimages/Image1.gif"
        End If
        Label4.Text = Image2.ImageUrl
    End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>HttpRequest.ApplicationPath Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        This is the ApplicationPath from the current page:<br />
        <asp:Label ID="Label1" runat="server" ForeColor="Brown" /><br />
        Use it to link to a centralized resource from an unknown location.<br />
        <asp:Image ID="Image1" runat="server" />
        <asp:Label ID="Label2" runat="server" ForeColor="Brown" />
        <br /><br />
        This is the AppRelativeCurrentExecutionFilePath to the current page:<br />
        <asp:Label ID="Label3" runat="server" ForeColor="Brown" /><br />
        Use it to programatically access URL information across multiple 
        deployments.<br />
        <asp:Image ID="Image2" runat="server" />
        <asp:Label ID="Label4" runat="server" ForeColor="Brown" />
        </div>
    </form>
</body>
</html>

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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