动态添加文本框的文本 [英] dynamically added Textbox's text

问题描述

在单击按钮时动态地将文本框添加到面板(panel1)中

并想在按钮的lcick上检索其值(btnretrive)

但是会抛出一个异常，说panel1不包含任何控件.

在这个

Am adding a textbox to a panel(panel1) dynamically on click of a button add

And want to retrieve its value on lcick of a button (btnretrive)

but an exception is thrown saying panel1 doesnot contain any controls.

help me on this

推荐答案

上帮我，没有您的代码，很难准确地评论它的问题所在！相反，我将使用以下代码将文本框添加到面板中:

Without your code, it is difficult to comment accurately on what is wrong with it! Instead, I would use this code to add the textbox to my panel:

TextBox tb = new TextBox();
tb.Width = 100;
tb.Height = 50;
tb.Location = new Point(10,10);
tb.Text = "My New TextBox";
myPanel.Controls.Add(tb);

我将使用以下代码对其进行访问:

And I would use this code to access it:

foreach(Control c in myPanel.Controls)
   {
   TextBox tb = c as TextBox;
   if (tb != null)
      {
      Control.WriteLine(tb.Text);
      }
   }

您在做什么与众不同?

此链接 [ ^ ]讨论了遍历控件的情况，并且可能为您提供帮助.

This link [^]discusses looping through controls and may be a help to you.

尝试此链接
链接[ ^ ]

try this Link
Link [^]

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