动态添加时用户控件无法正常工作 [英] User control not working when added dynamically

问题描述

  1。我只是在asp.net中创建了一个用户控件，它有一个文本框，日历和一个按钮。

  2。在该按钮的点击事件中，我正在显示日历，并且在日历的"onselectionchanged"事件中，我将所选日期传递到文本框。

  3。现在我有一个.aspx页面，我在RUN TIME添加了这个用户控件。

  4。添加了用户控件，但是我使日历可见的按钮的单击事件不会被触发。

 1. I have simply created a user control in asp.net which has a textbox,calendar and a button.
 2. On the click event of that button i am making the calendar visible,and on the calendar's `onselectionchanged` event i am passing the selected date to the textbox.
 3. Now i have a .aspx page in which i am adding this user control at RUN TIME.
 4. The user control gets added,but the click event of the button by which i am making the calendar visible is not getting fired.

问题是什么？当我在设计时添加用户控件时，它工作正常。

但是当我在运行时添加它时不工作。



< ; - - 用户控制代码的开始（用户控制的完整代码） - >
$

What is the Issue? Its working fine when i add that user control at design time.
But when i add it at run time in not working.

<!-- START OF USER CONTROL CODE(FULL CODE OF USER CONTROL) -->

    <%@ Control Language="C#" AutoEventWireup="true" CodeFile="Dates.ascx.cs" Inherits="Date"%> 
        <asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
            <ContentTemplate> 
               <asp:TextBox ID="TextBox1" onblur="upperCase()" runat="server"></asp:TextBox> 
               <asp:Button ID="Button9" runat="server" onclick="Button9_Click" Text="..." /> 
               <asp:Calendar ID="Calendar1" runat="server" onselectionchanged="Calendar1_SelectionChanged1" Visible="False" /></asp:Calendar> 
               <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>          
           </ContentTemplate> 
        </asp:UpdatePanel>

<！ - 用户控制码结束 - >



<！ - 启动用户控制的代码 - >

<!-- END OF USER CONTROL CODE -->

<!-- START OF CODE WHERE I AM IMPLEMENTING THE USER CONTROL -->

//created a public object named 'users' of control class
public partial class View_now : System.Web.UI.Page
{
 public Control users; 
}


//loaded the user control in page load event
protected void Page_Load(object sender, EventArgs e)
{  
        users = LoadControl("~\\Dates.ascx");
}


//applied the user control to a panel
protected void Button2_Click(object sender, EventArgs e)
{
        Panel2.Controls.Add(users);
}

<！ - 我执行用户控制的代码结束 - >

<!-- END OF CODE WHERE I AM IMPLEMENTING THE USER CONTROL -->

现在当我点击用户控制按钮。它不起作用。请帮助。

Now when i click the user control button.It doesn't work.Please help.

推荐答案

马修，

因为您要在每个Page_Load上添加usercontrol，所以不会触发usercontrol的事件。解决这个问题的第一步是检查请求是否是回发（ Page.IsPostBack ）。

Because you are adding your usercontrol on each Page_Load, the events of the usercontrol aren't being fired. First step to fix this is check to see if the request is a postback (Page.IsPostBack).

您的问题是
多次寻址，祝你好运！

Your issue has been addressed multiple times, good luck!

希望这有帮助

编辑：

哦，顺便说一句：

• 我会将ScriptManager放在页面上在UserControl上。
• ScriptMananager应该是页面上的第一个控件

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