Düzenle

Aracılığıyla paylaş

ControlAdapter.Browser Property

  • Reference

Definition

Namespace:
System.Web.UI.Adapters
Assembly:
System.Web.dll

Gets a reference to the browser capabilities of the client making the current HTTP request.

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

Property Value

HttpBrowserCapabilities

An HttpBrowserCapabilities specifying client browser and markup capabilities.

Examples

The following code example shows how to use the Browser property to access the details of the requesting browser. In this example, the code checks to determine whether the browser is compatible with JavaScript, and then allows the developer to render customized output in that case.

#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

Remarks

A ControlAdapter object determines the client browser capabilities from the HttpBrowserCapabilities object that is returned by the Browser property. This enables the ControlAdapter object to render browser-specific markup or otherwise modify the behavior of the Control.

Applies to

See also