一、实现效果

    在 Winform中窗体（Form）就像一个容器，可以包含所有的控件（比如：panel、button、textedit等控件）；如果把窗体看做是 Winform 中最大的容器，那么Panel可以看做第二，Panel控件则是专门用于界面的排版布局，相当于 Web 开发中的层（div），几乎所有控件都可以包含到 Panel 中，包括窗体。

①获取到指定窗体下的所有控件；

②获取到指定Panel下的所有控件；

③获取到窗体下的所有TextEdit类型控件；

④根据控件名称获取到该控件；

 二、实现方法

        /// <summary>
        /// 获取指定窗体或面板下的所有控件
        /// </summary>
        /// <typeparam name="T">控件类型</typeparam>
        /// <param name="containChildControlWindow">包含子控件的窗体（比如窗体是[Controls]、panel是[panel.controls]）</param>
        /// <returns></returns>
        private Stack<Control> GetAllControlOfWindows(Control.ControlCollection containChildControlWindow)
        {
            Stack<Control> tmpStack = new Stack<Control>();
            foreach (Control control in containChildControlWindow)
            {
                tmpStack.Push(control);
            }

            return tmpStack;
        }



        /// <summary>
        /// 获取指定窗体或面板下的指定类型的控件
        /// </summary>
        /// <typeparam name="T">控件类型</typeparam>
        /// <param name="containChildControlWindow">包含子控件的窗体（比如窗体是[Controls]、panel是[panel.controls]）</param>
        /// <returns></returns>
        private Stack<T> GetAppointControlOfWindows<T>(Control.ControlCollection containChildControlWindow)
        {
            Stack<T> tmpStack = new Stack<T>();
            foreach (var control in containChildControlWindow)
            {
                if (control is T)
                {
                    tmpStack.Push((T)control);
                }

            }

            return tmpStack;
        }


        /// <summary>
        /// 通过控件名称获取到控件
        /// </summary>
        /// <param name="controlName">控件名称</param>
        /// <param name="containChildControlWindow">包含子控件的窗体（比如窗体是[Controls]、panel是[panel.controls]）</param>
        /// <returns></returns>
        private Control GetControlOfName(string controlName, Control.ControlCollection containChildControlWindow)
        {
            if (string.IsNullOrEmpty(controlName)) return null;

            foreach (Control item in containChildControlWindow)
            {
                if (item.Name.Equals(controlName))
                {
                    return item;
                }
            }

            return null;
        }

 三、调用方法

        //获取到窗体下包含的所有控件
        private void btn_getAllControlOfWindow_Click(object sender, EventArgs e)
        {
            Stack<Control> controls = GetAllControlOfWindows(this.Controls);
            ShowControlInfo(controls);
        }



        //获取到Panel下包含的所有控件
        private void btn_GetAllControlOfPanel_Click(object sender, EventArgs e)
        {
            Stack<Control> controls = GetAllControlOfWindows(this.panel1.Controls);
            ShowControlInfo(controls);
        }



        //获取窗体下的所有TextEdit类型控件
        private void btn_GetAllTextEditControlOfWindow_Click(object sender, EventArgs e)
        {
            Stack<TextEdit> controls = GetAppointControlOfWindows<TextEdit>(this.Controls);
            ShowControlInfo(controls);
        }


        //根据输入的控件名称获取控件
        private void btn_GetControlOfName_Click(object sender, EventArgs e)
        {
            //通过控件名称获取控件
            string inputControlName = textEdit1.Text.Trim();
            Control control = GetControlOfName(inputControlName, this.Controls);
            if (control!=null)
            {
                string strInfo = $"名称为【simpleButton1】的控件信息如为：{control.Name} {control.Text} {control.Size} {control.Enabled = false}";
                ShowInfo(strInfo);
            }
         
        }





        /// <summary>
        /// 显示控件信息
        /// </summary>
        /// <typeparam name="T">控件类型</typeparam>
        /// <param name="controlList">控件列表</param>
        private void ShowControlInfo<T>(Stack<T> controlList)
        {
            if (controlList == null || controlList.Count <= 0)
                return;

            string strTmp = string.Empty;

            foreach (var item in controlList)
            {
                if (item is Control)
                {
                    Control control = item as Control;

                    strTmp += $"控件名称【{control.Name}】 控件描述【{control.Text}】" + "\r\n";
                }

            }
            strTmp += $"\r\n 共有：{controlList.Count} 个控件";
            ShowInfo(strTmp);
        }

        /// <summary>
        /// 显示信息
        /// </summary>
        /// <param name="info">信息</param>
        private void ShowInfo(string info)
        {
            memoEdit_ShowInfo.Text = info;
        }