本文整理匯總了VB.NET中System.Web.IHttpHandlerFactory.GetHandler方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET IHttpHandlerFactory.GetHandler方法的具體用法？VB.NET IHttpHandlerFactory.GetHandler怎麽用？VB.NET IHttpHandlerFactory.GetHandler使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。
在下文中一共展示了IHttpHandlerFactory.GetHandler方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: ReleaseHandler
' Name this Visual Basic file HandlerFactoryTest.vb and compile it with
' the command line: vbc /t:Library /r:System.Web.dll HandlerFactoryTest.vb.
' Copy HandlerFactoryTest.dll to your \bin directory.
Imports System.Web
Namespace test
' Factory class that creates a handler object based on a request
' for either abc.aspx or xyz.aspx as specified in the Web.config file.
Public Class MyFactory
Implements IHttpHandlerFactory
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Overridable Function GetHandler(context As HttpContext, _
requestType As String, url As String, pathTranslated As String) _
As IHttpHandler _
Implements IHttpHandlerFactory.GetHandler
Dim fname As String = url.Substring(url.LastIndexOf("/"c) + 1)
Dim cname As String = fname.Substring(0, fname.IndexOf("."c))
Dim className As String = "test." & cname
Dim h As Object = Nothing
Try ' to create the handler object.
' Create by calling class abc or class xyz.
h = Activator.CreateInstance(Type.GetType(className))
Catch e As Exception
Throw New HttpException("Factory couldn't create instance " & _
"of type " & className, e)
End Try
Return CType(h, IHttpHandler)
End Function
' This is a must override method.
Public Overridable Sub ReleaseHandler(handler As IHttpHandler) _
Implements IHttpHandlerFactory.ReleaseHandler
End Sub
End Class
' Class definition for abc.aspx handler.
Public Class abc
Implements IHttpHandler
Public Overridable Sub ProcessRequest(context As HttpContext) _
Implements IHttpHandler.ProcessRequest
context.Response.Write("<html><body>")
context.Response.Write("<p>ABC Handler</p>" & _
Microsoft.VisualBasic.ControlChars.CrLf)
context.Response.Write("</body></html>")
End Sub
Public Overridable ReadOnly Property IsReusable() As Boolean _
Implements IHttpHandler.IsReusable
Get
Return True
End Get
End Property
End Class
' Class definition for xyz.aspx handler.
Public Class xyz
Implements IHttpHandler
Public Overridable Sub ProcessRequest(context As HttpContext) _
Implements IHttpHandler.ProcessRequest
context.Response.Write("<html><body>")
context.Response.Write("<p>XYZ Handler</p>" & _
Microsoft.VisualBasic.ControlChars.CrLf)
context.Response.Write("</body></html>")
End Sub
Public Overridable ReadOnly Property IsReusable() As Boolean _
Implements IHttpHandler.IsReusable
Get
Return True
End Get
End Property
End Class
End Namespace
'______________________________________________________________
'
'To use the handler factory, use the following lines in a
'Web.config file. (be sure to remove the comment markers)
'
' <add verb="*" path="abc.aspx" type="test.MyFactory,HandlerFactoryTest" />
' <add verb="*" path="xyz.aspx" type="test.MyFactory,HandlerFactoryTest" />