Partager via


HttpCapabilitiesBase.RequiresLeadingPageBreak Propriété

Définition

Obtient une valeur indiquant si le navigateur a besoin que le premier élément dans le corps d’une page Web soit un élément HTML <br>.

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

Valeur de propriété

Boolean

true si le navigateur exige que le premier élément situé dans le corps d’une page web soit un élément HTML BR ; dans le cas contraire, false. La valeur par défaut est false.

Exemples

L’exemple de code suivant montre comment déterminer si le navigateur nécessite que le premier élément dans le corps d’une page Web soit un élément HTML <br> .

<%@ 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).RequiresLeadingPageBreak)
        {
            labelText = "Browser requires that the first element in the body of a web page be an HTML BR element.";
        }
        else
        {
            labelText = "Browser does not require that the first element in the body of a web page be an HTML BR element.";
        }

        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)).RequiresLeadingPageBreak Then
            labelText = "Browser requires that the first element in the body of a web page be an HTML BR element."
        Else
            labelText = "Browser does not require that the first element in the body of a web page be an HTML BR element."
        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>

Remarques

Si trueles adaptateurs de contrôle serveur insèrent un élément supplémentaire <br> immédiatement après la <body> balise dans une page Web.

S’applique à