wpf image控件循环显示图片 以达到动画效果 问题及解决方案

1>最初方案:

用wpf的image控件循环显示图片,达到动画效果,其实就是在后台代码动态改变Image.Source的值,关键代码:

        　　for (int i = ; i < ; i++)//六百张图片
            {
                BitmapImage bmImg = new BitmapImage(new Uri(AppDomain.CurrentDomain.BaseDirectory + i.ToString() + ".png"));
                bmImg.CacheOption = BitmapCacheOption.None;
                vimage..Source=bmImg.Clone();
                System.Threading.Thread.Sleep();//每秒25帧
            }

由于Image.Source切换BitmapImage后,仍然抓着旧的bmImg不放,导致内存溢出.再多的内存也不够用.

在网上也找了大家说的方案都不行.只能寻找其他方案.

2>最终方案:

思路:a>先把所有要加载的图片转换成二进制数组,再把数组缓存到List中;

b>循环List,把二进制图片转换成MemoryStream;

c>把MemoryStream,通过ImageSourceConverter.ConvertFrom() as BitmapFrame,进行转换.

优点:先把图片缓存成二进制,这样可以释放对图片文件资源的占用,后面代码执行效率高;用通过MemoryStream生成的Source,用完就被释放了[暂时解释不了]!

核心代码:

           imageSourceConverter = new ImageSourceConverter();
           byList = new List<byte[]>();
           for (int i = ; i < ; i++)
           {
               using (BinaryReader binReader = new BinaryReader(File.Open(AppDomain.CurrentDomain.BaseDirectory + i.ToString() + ".png", FileMode.Open)))
               {
                   FileInfo fileInfo = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + i.ToString() + ".png");
                   //byte[] bytes = binReader.ReadBytes((int)fileInfo.Length);
                   //byList.Add(bytes);

                   if ((long)int.MaxValue > fileInfo.Length)
                   {
                       byte[] bytes = binReader.ReadBytes((int)fileInfo.Length);
                       byList.Add(bytes);
                   }
                   else
                   {
                       int leng = ;
                       byte[] bytes = new byte[fileInfo.Length];
                       for (long j = ; j < (fileInfo.Length / (long)leng + (long)); j++)
                       {
                           byte[] b = binReader.ReadBytes(leng);
                           if (b == null || b.Length < )
                           {
                               break;
                           }
                           for (long jj = j * leng; jj < (j + ) * leng; jj++)
                           {
                               bytes[jj] = b[jj % leng];
                           }
                       }
                       byList.Add(bytes);
                   }
               }
           }

// // //////////////
           for (int i = 0; i < byList.Count; i++)
           {
               MemoryStream stream = new MemoryStream(byList[i]);
               vimage.Source = imageSourceConverter.ConvertFrom(stream) as BitmapFrame;
               System.Threading.Thread.Sleep(40);
           }

真诚期待大家指导...