我正在尝试根据浏览器类型分配主题。我想在基类中这样做,所以它只需要在一个地方(我使用的是母版页)。我编写了以下代码,但这里的“OnLoad”是在“Page_PreInit”之前执行的。这需要进入Page_PreInit,但为什么不解雇呢?
Imports Microsoft.VisualBasic
Public Class MyBaseClass
Inherits System.Web.UI.Page
Private Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs)
'Assign the CSS Theme based on the Browser Type
If (Request.Browser.Type = "IE8") Then
Page.Theme = "Standard-IE8"
Else
Page.Theme = "Standard"
End If
End Sub
Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
MyBase.OnLoad(e)
End Sub
End Class
然后,我将我的登录页面编码为继承基类:
Partial Class Login
'Inherits System.Web.UI.Page
Inherits MyBaseClass
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
谢谢你, 詹姆斯
答案 0 :(得分:1)
您需要在基类中覆盖 OnPreInit
。
Protected Overrides Sub OnPreInit(ByVal e As System.EventArgs)
'Assign the CSS Theme based on the Browser Type
If (Request.Browser.Type = "IE8") Then
Page.Theme = "Standard-IE8"
Else
Page.Theme = "Standard"
End If
MyBase.OnPreInit(e)
End Sub
有关使用自定义基类的详细信息,请参阅here。