winform-datagridview列显示图片

1、创建列格式化事件，指定图片列
/// <summary>
        /// datagridview列格式化事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void dataGridViewFeature_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
        {
            if (dataGridViewFeature.Columns[e.ColumnIndex].Name.Equals("Image") && e.Value != null)
            {
                string path = e.Value.ToString();
　　　　　　　　　　//
                e.Value = GetImage(path);
            }
        }

        /// <summary>
        /// 根据路径获取图片
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public Image GetImage(string path)
        {
            if (!path.Equals(""))
            {
                FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                Image result = System.Drawing.Image.FromStream(fs);

                //调整图片大小
                result = FixedSize(result, 80, 80);

                fs.Close();

                return result;
            }

            return null;
        }

        /// <summary>
        /// 调整图片大小
        /// </summary>
        /// <param name="imgPhoto">原图片</param>
        /// <param name="Width">更改后宽</param>
        /// <param name="Height">更改后高</param>
        /// <returns></returns>
        private Image FixedSize(Image imgPhoto, int Width, int Height)
        {
            int sourceWidth = imgPhoto.Width;
            int sourceHeight = imgPhoto.Height;
            int sourceX = 0;
            int sourceY = 0;
            int destX = 0;
            int destY = 0;

            float nPercent = 0;
            float nPercentW = 0;
            float nPercentH = 0;

            nPercentW = ((float)Width / (float)sourceWidth);
            nPercentH = ((float)Height / (float)sourceHeight);
            if (nPercentH < nPercentW)
            {
                nPercent = nPercentH;
                destX = System.Convert.ToInt16((Width -
                              (sourceWidth * nPercent)) / 2);
            }
            else
            {
                nPercent = nPercentW;
                destY = System.Convert.ToInt16((Height -
                              (sourceHeight * nPercent)) / 2);
            }

            int destWidth = (int)(sourceWidth * nPercent);
            int destHeight = (int)(sourceHeight * nPercent);

            Bitmap bmPhoto = new Bitmap(Width, Height,
                              PixelFormat.Format24bppRgb);
            bmPhoto.SetResolution(imgPhoto.HorizontalResolution,
                             imgPhoto.VerticalResolution);

            Graphics grPhoto = Graphics.FromImage(bmPhoto);
            grPhoto.Clear(Color.Red);
            grPhoto.InterpolationMode =
                    InterpolationMode.HighQualityBicubic;

            grPhoto.DrawImage(imgPhoto,
                new Rectangle(-1, -1, Width, Height),
                new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
                GraphicsUnit.Pixel);

            grPhoto.Dispose();
            return bmPhoto;
        }