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HttpCapabilitiesBase.RequiresUniqueFilePathSuffix Property

Gets a value indicating whether the browser requires unique form-action URLs.

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

public virtual bool RequiresUniqueFilePathSuffix { get; }
/** @property */
public boolean get_RequiresUniqueFilePathSuffix ()

public function get RequiresUniqueFilePathSuffix () : boolean

Not applicable.

Property Value

true if the browser requires unique form-action URLs; otherwise, false. The default is false.

A self-referring HTML <form> element is one for which the action attribute specifies its own URL. If true, self-referring forms do not return the correct results. This is due to caching by either the browser or an intermediate gateway. To correct this, server control adapters append a default query string (__ufps=uniquefilepathsuffix) onto the form-action URL values of self-referring forms.

The following code example shows how to determine whether the browser requires unique form-action URLs.

<%@ 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">
    void Page_Load(Object Sender, EventArgs e)
    {
        CheckBrowserCaps();
    }

    void CheckBrowserCaps()
    {
        String labelText = "";
        System.Web.HttpBrowserCapabilities myBrowserCaps = Request.Browser;
        if (((System.Web.Configuration.HttpCapabilitiesBase)myBrowserCaps).RequiresUniqueFilePathSuffix)
        {
            labelText = "Browser requires FORM ACTION URLs be unique.";
        }
        else
        {
            labelText = "Browser does not require FORM ACTION URLs be unique.";
        }

        Label1.Text = labelText;
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Browser Capabilities Sample</title>
</head>
<body>
    <form runat="server" id="form1">
        <div>
            Browser Capabilities:
            <p/><asp:Label ID="Label1" Runat="server" />
        </div>
    </form>
</body>
</html>

<%@ page language="VJ#"%>

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

void Page_Load(Object sender, EventArgs e)
{
    CheckBrowserCaps();
} //Page_Load

void CheckBrowserCaps()
{
    String labelText = "";
    System.Web.HttpBrowserCapabilities myBrowserCaps = 
        get_Request().get_Browser();
    if (((System.Web.Configuration.HttpCapabilitiesBase)myBrowserCaps).
        get_RequiresUniqueFilePathSuffix()) {
        labelText = "Browser requires FORM ACTION URLs be unique.";
    }
    else {
        labelText = "Browser does not require FORM ACTION URLs be unique.";
    }
    Label1.set_Text(labelText);
} //CheckBrowserCaps
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Browser Capabilities Sample</title>
</head>
<body>
    <form runat="server" id="form1">
        <div>
            Browser Capabilities:
            <p/><asp:Label ID="Label1" Runat="server" />
        </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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