通过

HttpCapabilitiesBase.SupportsQueryStringInFormAction 属性

  • 参考

定义

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

获取一个值，该值指示浏览器是否在 HTML <form> 元素的 action 特性值中支持查询字符串。

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

属性值

Boolean

如果浏览器支持 HTML <form> 元素的 action 特性中的查询字符串，则为 true；否则为 false。 默认值为 true。

示例

下面的代码示例演示如何确定浏览器是否支持 HTML <form> 元素属性的值action中的查询字符串。

<%@ 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).SupportsQueryStringInFormAction)
        {
            labelText = "Browser supports a query string in the value for the ACTION attribute of HTML FORM elements.";
        }
        else
        {
            labelText = "Browser does not support a query string in the value for the ACTION attribute of HTML FORM elements.";
        }

        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)).SupportsQueryStringInFormAction Then
            labelText = "Browser supports a query string in the value for the ACTION attribute of HTML FORM elements."
        Else
            labelText = "Browser does not support a query string in the value for the ACTION attribute of HTML FORM elements."
        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>

注解

如果 false发送查询字符串参数，则以 HTML 元素的形式发送回发数据， <input> 其 type 属性设置为 hidden。

适用于