Page_Init创建的控件无法在Page_Load中访问 [英] Page_Init created control can not accessed at Page_Load

问题描述

我已经在Page_init中创建了用户控件.

它显示在表单上，​​我试图在页面加载时找到它，但我无法访问它.

这是我的代码

Page_Init

Hi,

I have created user control in Page_init.

It displays on form , i am trying to find it on page load but i am not able to access it.

Here is my code

Page_Init

for (int i = 1; i <= li_Count; i++)
            {
                Movable_Text mt = new Movable_Text();
                mt.ID = "Movable_Text" + Convert.ToString(li_Count);
                mt = LoadControl("~/Controls/Movable_Text.ascx") as Movable_Text;

                DragPanelExtender drag_panel = new DragPanelExtender();
                drag_panel = mt.FindControl("DPE_TextComments") as DragPanelExtender;

                drag_panel.ID = "DPE_TextComments" + Convert.ToString(li_Count);

                this.PH_Master_Page.Controls.Add(mt);
            }

Page_Load

Page_Load

for (int i = 1; i <= li_Count; i++)
        {
            str_drag_panel = "DPE_TextComments" + Convert.ToString(li_Count);
            DragPanelExtender drag_panel = new DragPanelExtender();
            drag_panel = this.FindControl(str_drag_panel) as DragPanelExtender;
            if (drag_panel == null)
            {
                //
            }
            else
            {
                //
            }
        }

其中 Movable_Text 是我的用户控件， PH_Master_Page 是我在母版页上的占位符，而 li_count 是我的静态变量，用于计算添加到控件上的控件数表格.

请指导我

where Movable_Text is my user control ,PH_Master_Page is my place holder on master page and li_count is my static variable used to count number of controls added on form.

Please guide me

推荐答案

尝试在PreInit事件处理程序中创建控件.

ASP.NEt页面生命周期参考 [

Try creating the controls in the PreInit event handler.

ASP.NEt Page Life-cycle reference[^]

首先将用户控件添加到母版页检查视图源以获取母版页查找控件ID，它将显示为ct100_等，将drag_panel = this.FindControl("ct00_")作为DragPanelExtender复制；
您将找到该控件.

First add user controls to master page check the view source for master page find control id it will displays like ct100_ etc copy drag_panel = this.FindControl("ct00_") as DragPanelExtender;
you will find that control.

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