ASP.NET页面生命周期说明

Question

曾被要求在一次采访中解释ASP.NET页面的生命周期。我确实向他解释过，但是他对我的回答不满意。有人可以向我解释生命周期吗？

Answer 1

ASP.NET页面生命周期中有10个事件，其顺序为：

1. 初始化
2. 加载视图状态
3. 回传数据
4. 加载
5. 验证
6. 事件
7. 预渲染
8. 保存视图状态
9. 渲染
10. 卸载

下面是ASP.NET页面生命周期的示意图，其中包含在该事件中需要什么样的代码。我建议您阅读this article I wrote on the ASP.NET Page life cycle，它详细解释了10个事件中的每个事件以及何时使用它们。

[图片来源：我自己于2010年4月19日在https://www.c-sharpcorner.com/uploadfile/shivprasadk/Asp-Net-application-and-page-life-cycle/发表的文章

Answer 2

此首字母缩写词可以帮助您记住我在下面的博客文章中所写的ASP.NET生命周期阶段。

R-SIL-VP-RU

1. 请求
2. 开始
3. 初始化
4. 加载
5. 验证
6. 回发处理
7. 渲染
8. 卸载

来自我的博客：Understand ASP.NET Page life cycle and remember stages in easy way2014年5月18日

Answer 3

Partial Class _Default
    Inherits System.Web.UI.Page
    Dim str As String

    Protected Sub Page_Disposed(sender As Object, e As System.EventArgs) Handles Me.Disposed

        str += "PAGE DISPOSED" & "<br />"
    End Sub

    Protected Sub Page_Error(sender As Object, e As System.EventArgs) Handles Me.Error
        str += "PAGE ERROR " & "<br />"
    End Sub

    Protected Sub Page_Init(sender As Object, e As System.EventArgs) Handles Me.Init
        str += "PAGE INIT " & "<br />"
    End Sub

    Protected Sub Page_InitComplete(sender As Object, e As System.EventArgs) Handles Me.InitComplete
        str += "INIT Complte " & "<br />"
    End Sub

    Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        str += "PAGE LOAD " & "<br />"

    End Sub

    Protected Sub Page_LoadComplete(sender As Object, e As System.EventArgs) Handles Me.LoadComplete
        str += "PAGE LOAD Complete " & "<br />"
    End Sub

    Protected Sub Page_PreInit(sender As Object, e As System.EventArgs) Handles Me.PreInit
        str = ""
        str += "PAGE PRE INIT" & "<br />"
    End Sub

    Protected Sub Page_PreLoad(sender As Object, e As System.EventArgs) Handles Me.PreLoad
        str += "PAGE PRE LOAD " & "<br />"
    End Sub

    Protected Sub Page_PreRender(sender As Object, e As System.EventArgs) Handles Me.PreRender
        str += "PAGE PRE RENDER " & "<br />"
    End Sub

    Protected Sub Page_PreRenderComplete(sender As Object, e As System.EventArgs) Handles Me.PreRenderComplete
        str += "PAGE PRE RENDER COMPLETE " & "<br />"
    End Sub

    Protected Sub Page_SaveStateComplete(sender As Object, e As System.EventArgs) Handles Me.SaveStateComplete
        str += "PAGE SAVE STATE COMPLTE  " & "<br />"
        lbl.Text = str
    End Sub

    Protected Sub Page_Unload(sender As Object, e As System.EventArgs) Handles Me.Unload
        'Response.Write("PAGE UN LOAD\n")
    End Sub
End Class