ControlAdapter.Browser 屬性

定義

命名空間:

System.Web.UI.Adapters

組件:

System.Web.dll

取得對用戶端瀏覽器功能的參考 (此用戶端是發出目前 HTTP 要求的用戶端)。

protected:
 property System::Web::HttpBrowserCapabilities ^ Browser { System::Web::HttpBrowserCapabilities ^ get(); };

protected System.Web.HttpBrowserCapabilities Browser { get; }

member this.Browser : System.Web.HttpBrowserCapabilities

Protected ReadOnly Property Browser As HttpBrowserCapabilities

屬性值

HttpBrowserCapabilities

HttpBrowserCapabilities，指定用戶端瀏覽器和標記功能。

範例

下列程式碼範例示範如何使用 Browser 屬性來存取要求瀏覽器的詳細資料。 在此範例中，程式碼會檢查以判斷瀏覽器是否與 JavaScript 相容，然後允許開發人員在該情況下轉譯自訂輸出。

#using <System.Web.dll>
#using <System.dll>

using namespace System;
using namespace System::Web::UI;
using namespace System::Web::UI::Adapters;

public ref class CustomControlAdapter: public ControlAdapter
{
protected:
   virtual void Render( HtmlTextWriter^ writer ) override
   {
      // Access Browser details through the Browser property.
      Version^ jScriptVersion = Browser->JScriptVersion;
      
      // Test if the browser supports Javascript.
      if ( jScriptVersion != nullptr )
      {
         // Render JavaScript-aware markup.
      }
      else
      {
         // Render scriptless markup.
      }
   }
};

using System;
using System.Web.UI;
using System.Web.UI.Adapters;

public class CustomControlAdapter : ControlAdapter
{
    protected override void Render( HtmlTextWriter writer )
    {
        // Access Browser details through the Browser property.
        Version jScriptVersion = Browser.JScriptVersion;

        // Test if the browser supports Javascript.
        if (jScriptVersion != null)
        {
            // Render JavaScript-aware markup.
        }
        else
        {
            // Render scriptless markup.
        }
    }
}

Imports System.Web.UI
Imports System.Web.UI.Adapters

Public Class CustomControlAdapter
    Inherits ControlAdapter

    Protected Overrides Sub Render(ByVal writer As HtmlTextWriter)

        ' Access Browser details through the Browser property.
        Dim jScriptVersion As Version = Browser.jScriptVersion

        ' Test if the browser supports Javascript.
        If Not (jScriptVersion Is Nothing) Then
            ' Render JavaScript-aware markup.
        Else
            ' Render scriptless markup.
        End If

    End Sub

End Class

備註

ControlAdapter物件會從 HttpBrowserCapabilities 屬性所 Browser 傳回的物件判斷用戶端瀏覽器功能。 這可讓 ControlAdapter 物件轉譯瀏覽器特定的標記，或修改 的行為 Control 。

另請參閱

• Control
• HttpBrowserCapabilities
• HttpCapabilitiesBase