访问控制编程方式添加回发 [英] Accessing controls added programmatically on postback

问题描述

在回发：我如何可以访问我的code隐藏文件的ASP.NET控件，它以编程方式添加

On postback: How can I access ASP.NET controls in my code-behind file, which are added programmatically?

我加入一个CheckBox控件到一个占位符控件：

I am adding a CheckBox control to a Placeholder control:

PlaceHolder.Controls.Add(new CheckBox { ID = "findme" });

在ASPX文件中添加的控件都出现在了 Request.Form.AllKeys 罚款除了我添加编程的人。我在做什么错了？

Controls added in the ASPX file are showing up fine in Request.Form.AllKeys except the ones I add programatically. What am I doing wrong?

启用上的控件使用ViewState中的无助。如果仅仅是这么简单：）

Enabling the use of the ViewState on the controls does not help. If only it was that simple :)

推荐答案

您应该重新创建回发动态控制：

You should recreate your dynamic control on postback:

protected override void OnInit(EventArgs e)
{

    string dynamicControlId = "MyControl";

    TextBox textBox = new TextBox {ID = dynamicControlId};
    placeHolder.Controls.Add(textBox);
}

这篇关于访问控制编程方式添加回发的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！