共用方式為

HttpCapabilitiesBase.PreferredImageMime 屬性

  • 參考

定義

命名空間:
System.Web.Configuration
組件:
System.Web.dll

傳回瀏覽器通常慣用之影像內容類型的 MIME 類型。

public:
 virtual property System::String ^ PreferredImageMime { System::String ^ get(); };
public virtual string PreferredImageMime { get; }
member this.PreferredImageMime : string
Public Overridable ReadOnly Property PreferredImageMime As String

屬性值

String

瀏覽器通常慣用之影像內容類型的 MIME 類型。 預設為 image/gif。

範例

下列程式碼範例示範如何判斷瀏覽器通常會偏好的影像類型。

<%@ 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()
    {
        System.Web.HttpBrowserCapabilities myBrowserCaps = Request.Browser;
        Label1.Text = "Browser prefers images to be of MIME type: " + ((System.Web.Configuration.HttpCapabilitiesBase)myBrowserCaps).PreferredImageMime;
    }
</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 myBrowserCaps As System.Web.HttpBrowserCapabilities = Request.Browser
        Label1.Text = "Browser prefers images to be of MIME type: " & (CType(myBrowserCaps, System.Web.Configuration.HttpCapabilitiesBase)).PreferredImageMime

    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>

適用於