C#窗体Bitmap.FromFile内存不足

Question

C#内存Bitmap图片

Answer 1

我上个月在做一个小程序，从指定的文件夹里循环读取文件，运行一段时间以后，程序就会报错：内存不足
我是把图片直接填充到PICTURE控件中的，
后来解决办法
转换成数据流，用完就放掉，OK了。
再提醒下，如果直接填充，图片越大死的越快
一点经验，呵呵

Answer 2

是不是这样啊DirectoryInfo theFolder = new DirectoryInfo(@"C:\aa");
            DirectoryInfo[] dirInfo = theFolder.GetDirectories();
            //遍历文件夹
            foreach (DirectoryInfo NextFolder in dirInfo)
            {
                FileInfo[] fileInfo = NextFolder.GetFiles();
                foreach (FileInfo NextFile in fileInfo)
                {
                    if (NextFile.Extension.Equals(".jpg") || NextFile.Extension.Equals(".JPG") || NextFile.Extension.Equals(".jpge") || NextFile.Extension.Equals(".jpeg"))
                    {
                        if (NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_AZ.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_BO.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_CH.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_LU.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_NE.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_NI.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_OR.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_RO.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_SO.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_TO.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_VT.jpg" || NextFile.FullName.Substring(NextFile.FullName.Length - 7, 7) == "_XE.jpg")
                        {
                           // Bitmap originalImage =(Bitmap)Bitmap.FromFile(NextFile.FullName);
                            System.Drawing.Image originalImage = System.Drawing.Image.FromFile(NextFile.FullName);
                            int originalHeight = originalImage.Size.Height;//原始图片的宽度
                            int originalWidth = originalImage.Size.Width;//原始图片的高度  
                            if (originalWidth == 120 && originalHeight == 120)
                            {
                             int index = NextFile.FullName.LastIndexOf(".");
                             int g = NextFile.Name.LastIndexOf(".");
                             int h = NextFile.Name.LastIndexOf("_");
                             Directory.CreateDirectory("C:\\product\\" + NextFolder.Name + "");
                             MakeThumNail(NextFile.FullName, "C:\\product\\"+NextFolder.Name+"\\" + NextFile.Name.Substring(0, g) + ".jpg", 120, 120, "W");
                            }
                            originalImage.Dispose();
                        }
                    }
                }

Answer 3

Bitmap originalImage =(Bitmap)Bitmap.FromFile(originalImagePath);
                int thumWidth = width;//缩略图的宽度        
                int thumHeight = height; //缩略图的高度       
                int x = 0; int y = 0;
                int originalWidth = originalImage.Width;//原始图片的宽度       
                int originalHeight = originalImage.Height;//原始图片的高度        
                switch (model)
                {
                    case "HW": //指定高宽缩放,可能变形                
                        break;
                    case "W": //指定宽度,高度按照比例缩放               
                        thumHeight = originalImage.Height * width / originalImage.Width;
                        break;
                    case "H": //指定高度,宽度按照等比例缩放                
                        thumWidth = originalImage.Width * height / originalImage.Height;
                        break;
                    case "Cut":
                        if ((double)originalImage.Width / (double)originalImage.Height > (double)thumWidth / (double)thumHeight)
                        {
                            originalHeight = originalImage.Height;
                            originalWidth = originalImage.Height * thumWidth / thumHeight; y = 0; x = (originalImage.Width - originalWidth) / 2;
                        }
                        else
                        {
                            originalWidth = originalImage.Width;
                            originalHeight = originalWidth * height / thumWidth; x = 0;
                            y = (originalImage.Height - originalHeight) / 2;
                        }
                        break;
                    default:
                        break;
                }  //新建一个bmp图片        
                System.Drawing.Image bitmap = new System.Drawing.Bitmap(thumWidth, thumHeight); //新建一个画板        
                System.Drawing.Graphics graphic = System.Drawing.Graphics.FromImage(bitmap); //设置高质量查值法       
                graphic.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;        //设置高质量，低速度呈现平滑程度   
                graphic.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;        //清空画布并以透明背景色填充       
                graphic.Clear(System.Drawing.Color.Transparent);        //在指定位置并且按指定大小绘制原图片的指定部分       
                graphic.DrawImage(originalImage, new System.Drawing.Rectangle(0, 0, thumWidth, thumHeight), new System.Drawing.Rectangle(x, y, originalWidth, originalHeight),
               System.Drawing.GraphicsUnit.Pixel);
               originalImage.Dispose();
               graphic.Dispose();
               GC.Collect();
                try
                {
                    bitmap.Save(thumNailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
                }
                catch (Exception ex) { throw ex; }
                finally { originalImage.Dispose(); bitmap.Dispose(); graphic.Dispose(); GC.Collect(); }这是我写的代码，执行程序一段时间，就会突然报错提示Bitmap originalImage =(Bitmap)Bitmap.FromFile(originalImagePath);这一句内存不足是咋回事呀？？？求帮忙解决呀就差这一步了...