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HttpCapabilitiesBase.IsColor Eigenschaft

  • Referenz

Definition

Namespace:
System.Web.Configuration
Assembly:
System.Web.dll

Ruft einen Wert ab, der angibt, ob der Browser über eine Farbanzeige verfügt.

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

Eigenschaftswert

Boolean

true, wenn der Browser über Farbwiedergabe verfügt, andernfalls false. Der Standardwert ist false.

Beispiele

Das folgende Codebeispiel zeigt, ob der Browser des Clients Farben unterstützt. Der zurückgegebene Wert kann verwendet werden, um das entsprechende Bild zu bestimmen, das an den Browser gesendet werden soll.

<%@ 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).IsColor)
        {
            labelText = "Browser supports color.";
        }
        else
        {
            labelText = "Browser does not support color.";
        }

        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)).IsColor Then
            labelText = "Browser supports color."
        Else
            labelText = "Browser does not support color."
        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>

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