HttpCapabilitiesBase.RequiresContentTypeMetaTag Proprietà

Definizione

Ottiene un valore che indica se il browser richiede un elemento <meta> HTML per il quale sia specificato l'attributo content-type.Gets a value indicating whether the browser requires an HTML <meta> element for which the content-type attribute is specified.

public:
 virtual property bool RequiresContentTypeMetaTag { bool get(); };
public virtual bool RequiresContentTypeMetaTag { get; }
member this.RequiresContentTypeMetaTag : bool
Public Overridable ReadOnly Property RequiresContentTypeMetaTag As Boolean

Valore della proprietà

Boolean

true se il browser richiede un elemento HTML <meta> per cui è specificato l'attributo content-type. In caso contrario, false.true if the browser requires an HTML <meta> element for which the content-type attribute is specified; otherwise, false. Il valore predefinito è false.The default is false.

Esempio

Nell'esempio di codice seguente viene illustrato come determinare se il browser richiede un <meta> elemento HTML per cui content-type è specificato l'attributo.The following code example shows how to determine whether the browser requires an HTML <meta> element for which the content-type attribute is specified.

<%@ 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).RequiresContentTypeMetaTag)
        {
            labelText = "Browser requires an HTML META element whose CONTENT-TYPE attribute is specified.";
        }
        else
        {
            labelText = "Browser does not require an HTML META element whose CONTENT-TYPE attribute is specified.";
        }

        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="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        CheckBrowserCaps()
    End Sub

    Function CheckBrowserCaps()

        Dim labelText As String = ""
        Dim myBrowserCaps As System.Web.HttpBrowserCapabilities = Request.Browser
        If (CType(myBrowserCaps, System.Web.Configuration.HttpCapabilitiesBase)).RequiresContentTypeMetaTag Then
            labelText = "Browser requires an HTML META element whose CONTENT-TYPE attribute is specified."
        Else
            labelText = "Browser does not require an HTML META element whose CONTENT-TYPE attribute is specified."
        End If

        Label1.Text = labelText

    End Function '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>

Commenti

Se true , gli adattatori di controllo server inseriscono il seguente tag nell' <head> elemento HTML di una pagina Web:If true, server-control adapters insert the following tag into the HTML <head> element of a Web page:

<META HTTP-EQUIV="CONTENT-TYPE" CONTENT=""; CHARSET="">  

In questo esempio, CONTENT è il valore restituito dalla PreferredRenderingMime proprietà e charset è la codifica dei caratteri utilizzata.In this example, CONTENT is the value returned by the PreferredRenderingMime property, and charset is the character encoding used.

Si applica a