获取图片信息

      /// <summary>
        /// 获取图片信息
        /// </summary>
        /// <param name="path">图片全路径</param>
        /// <param name="width" direction="out">宽</param>
        /// <param name="height" direction="out">高</param>
        /// <param name="horizontalResolution" direction="out">水平分辨率</param>
        /// <param name="verticalResolution" direction="out">垂直分辨率</param>
        internal static void GetImgInfo(string path
            , out int width
            , out int height
            , out float horizontalResolution
            , out float verticalResolution)
        {
            using (Bitmap img = new Bitmap(path))
            {
                width = img.Width;
                height = img.Height;
                horizontalResolution = img.HorizontalResolution;
                verticalResolution = img.VerticalResolution;
            }
        }