通过

HttpCapabilitiesBase.PreferredImageMime 属性

  • 参考

定义

命名空间:
System.Web.Configuration
程序集:
System.Web.dll

返回浏览器通常首选的图像内容类型的 MIME 类型。

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

属性值

String

浏览器通常首选的图像内容类型的 MIME 类型。 默认值为 image/gif。

示例

下面的代码示例演示如何确定浏览器通常首选的图像类型。

<%@ 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>

适用于