C#实现一键清空控件值的示例代码

/// <summary>
        /// 清空查询条件
        /// </summary>
        /// <param name="parent">父控件</param>
        /// <param name="action">需要特殊处理的事件</param>
        public void ClearValue(Control parent, System.Action action = null)
        {
            foreach (Control c in parent.Controls)
            {
                if (c.HasChildren)
                {
                    ClearValue(c, action);
                }
                switch (c.GetType().Name)
                {
                    case "TextBox":
                        ((TextBox)c).Text = "";
                        break;
                    case "ComboBox":
                        ((ComboBox)c).Text = "";
                        break;
                    case "CheckBox":
                        ((CheckBox)c).Checked = false;
                        break;
                    case "RadioButton":
                        ((RadioButton)c).Checked = false;
                        break;
                    case "DateTimePicker":
                        ((DateTimePicker)c).Value = DateTime.Now;
                        break;
                }
            }
            if (action != null)
            {
                action.Invoke();
            }
        }

 private void btn_clear_Click(object sender, EventArgs e)
        {
            ClearValue(this);
        }

        private void btn_vip_Click(object sender, EventArgs e)
        {
            ClearValue(this, () =>
            {
                checkBox1.Checked = true;
            });
        }