C# 全选中数字文本框内容

///

        /// 全选中数字文本框内容
        ///

        ///
        public static void numericSelectAll(this object o)
        {
            System.Windows.Forms.NumericUpDown upDown = (System.Windows.Forms.NumericUpDown)o;
            upDown.Focus();
            System.Windows.Forms.UpDownBase up = upDown;
            upDown.Select(0, up.Text.Length);
        }

转载于:https://www.cnblogs.com/LuoEast/p/7753733.html