HttpRequest.ApplicationPath Property
Definition
Gets the ASP.NET application's virtual application root path on the server.
public:
property System::String ^ ApplicationPath { System::String ^ get(); };
public string ApplicationPath { get; }
member this.ApplicationPath : string
Public ReadOnly Property ApplicationPath As String
Property Value
The virtual path of the current application.
Examples
The following example uses the Write method to HTML-encode and then write the value of the ApplicationPath property to a text file. This code example is part of a larger example provided for the HttpRequest class. It assumes the existence of a StreamWriter object named sw
.
// Write request information to the file with HTML encoding.
sw.WriteLine(Server.HtmlEncode(DateTime.Now.ToString()));
sw.WriteLine(Server.HtmlEncode(Request.CurrentExecutionFilePath));
sw.WriteLine(Server.HtmlEncode(Request.ApplicationPath));
sw.WriteLine(Server.HtmlEncode(Request.FilePath));
sw.WriteLine(Server.HtmlEncode(Request.Path));
' Write request information to the file with HTML encoding.
sw.WriteLine(Server.HtmlEncode(DateTime.Now.ToString()))
sw.WriteLine(Server.HtmlEncode(Request.CurrentExecutionFilePath))
sw.WriteLine(Server.HtmlEncode(Request.ApplicationPath))
sw.WriteLine(Server.HtmlEncode(Request.FilePath))
sw.WriteLine(Server.HtmlEncode(Request.Path))
The following example uses the ApplicationPath property to programmatically construct a path to a resource that is in a fixed location in the application. The page that references the resource does not have to be located in the same directory as the resource.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = Request.ApplicationPath;
Image1.ImageUrl = Request.ApplicationPath + "/images/Image1.gif";
Label2.Text = Image1.ImageUrl;
}
</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>
ApplicationPath:<br />
<asp:Label ID="Label1" runat="server" ForeColor="Brown" /><br />
<asp:Image ID="Image1" runat="server" /><br />
ImageUrl:<br />
<asp:Label ID="Label2" runat="server" ForeColor="Brown" />
<br />
</div>
</form>
</body>
</html>
<%@ 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
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>
ApplicationPath:<br />
<asp:Label ID="Label1" runat="server" ForeColor="Brown" /><br />
<asp:Image ID="Image1" runat="server" />
ImageUrl:<br />
<asp:Label ID="Label2" runat="server" ForeColor="Brown" />
<br />
</div>
</form>
</body>
</html>
If you run this example in a Web application that is named WebSite1, /WebSite1
will be displayed as the value of the ApplicationPath property and /WebSite1/images/Image1.gif
will be displayed as the complete path of the image.
Remarks
Use this property to construct a URL relative to the application root from a page or Web user control that is not in the root directory. This allows pages and shared controls that exist at different levels of a directory structure to use the same code to link to resources at fixed locations in the application.