在System.Drawing.dll中发生未处理的异常类型'System.OutOfMemoryException'

Question

我试图循环遍历所有加载的图像，我能够处理多达40个图像，然后我得到Out的内存错误，尽管我正在处理变量tempImage。代码在“Bitmap tempImage = new Bitmap（fileName）;”线，PLZ的帮助！ 有没有办法处理大量的输入文件？像批处理一样，将进程分成块？由于该操作将持续超过一分钟，程序将在此之前崩溃。

foreach (string fileName in openFileDialog.FileNames) 
{ 
    circleDetection examDetect = new circleDetection(); 
    Bitmap tempImage = new Bitmap(fileName); 
    directory.Text = fileName; 

    PictureBox picBox = new PictureBox(); 
    picBox.Width = 200; 
    picBox.Height = 200; 
    picBox.Location = new System.Drawing.Point(picBoard.Controls.Count * (picBox.Width + 5) + 5, 5); 
    picBox.SizeMode = PictureBoxSizeMode.Zoom; 
    picBox.BorderStyle = BorderStyle.FixedSingle; 
    examDetect.ProcessImage(tempImage); 
    picBox.Image = examDetect.getImage(); 

    Console.WriteLine(i++); 

    student.Add(compare(examDetect)); 
    picBoard.Controls.Add(picBox); 
    tempImage.Dispose(); 
} 

Answer 1

我更喜欢使用using()而不是.Dispose()。它也在周期结束后处理一个对象。所以也许你应该试试像下一个？

foreach (string fileName in openFileDialog.FileNames) 
{ 
    circleDetection examDetect = new circleDetection(); 
    using (Bitmap tempImage = new Bitmap(fileName)) 
    { 
     Exam.Add(tempImage); 
     directory.Text = fileName; 

     PictureBox picBox = new PictureBox(); 
     picBox.Width = 200; 
     picBox.Height = 200; 
     picBox.Location = new System.Drawing.Point(picBoard.Controls.Count * (picBox.Width + 5) + 5, 5); 
     picBox.SizeMode = PictureBoxSizeMode.Zoom; 
     picBox.BorderStyle = BorderStyle.FixedSingle; 
     examDetect.ProcessImage(tempImage); 
     picBox.Image = examDetect.getImage(); 

     Console.WriteLine(i++); 

     student.Add(compare(examDetect)); 
     picBoard.Controls.Add(picBox); 
    } 
} 

，了解更多有关using请看MSDN。

更新： 但是，为什么你不使用流加载你的文件？建议在这种情况下使用流。