winform计算文本的所占的像素长度

        /// <summary>

        /// 计算文本的宽度

        /// </summary>

        /// <param name="str"></param>

        /// <returns></returns>

        public static int GetStringLength(string str, int AddLength = )

        {

            Font f = new Font("微软雅黑", 12F, System.Drawing.FontStyle.Regular, GraphicsUnit.Pixel);

            Size sif = TextRenderer.MeasureText(str, f, new Size(, ), TextFormatFlags.NoPadding);

            return sif.Width + AddLength;

            //MessageBox.Show((sif.Width / pdi).ToString());

        }