为什么flowlayoutpanel控件计数为0 C#

Question

我正在创建 3 个文本框并添加到 flowlayoutpanel，但是 flowlayoutpanel 控制计数 0.Why 检查的次数似乎为 0，是什么原因？

  internal void Create_TextBox_Click(object sender, EventArgs e)
    {
        var Dynamic = sender as TextBox;
        Regex regex = new Regex(@"\d+");
        Match match = regex.Match(Dynamic.Name);
        if (match.Success)
        {
            if(Dynamic.Name == "txtCash"+match.Value)
            {
                TextBox DynamicDataOne = fp.Controls.Find("txt" + match.Value, true)[0] as TextBox;
                TextBox DynamicDataTwo = fp.Controls.Find("txtTwo" + match.Value, true)[0] as TextBox;
                int _One;
                int _Two;
                if (int.TryParse(DynamicDataOne.Text, out _One) && int.TryParse(DynamicDataTwo.Text, out _Two))
                    Dynamic.Text = (_One * _Two).ToString();
            }
        }
    }

Answer 1

您可以像这样轻松地做到这一点：

var textboxes = fp.Controls.OfType<TextBox>().Where(x=> Regex.IsMatch(x.Name, "txtCash\d+"));

Answer 2

我是这样解决问题的；

    string GetTextBox()
    {
        TextBox txt = fp.Controls.Find("txt1", true)[0] as TextBox;
        return txt.Text;
    }

可是为什么我不能在活动中做到呢？

为什么flowlayoutpanel控件计数为0 C#

Why flowlayoutpanel controls count 0 C#

c#

events

controls

count

flowlayoutpanel