GDI + System.Drawing.Bitmap给出错误参数无效间歇性 [英] GDI+ System.Drawing.Bitmap gives error Parameter is not valid intermittently

问题描述

我有一个ASP.Net应用程序，做一些这方面的C＃code：

I have some C# code in an ASP.Net application that does this:

BMP位图=新位图（1184，1900）;

Bitmap bmp = new Bitmap(1184, 1900);

和偶尔它抛出一个异常参数无效。现在，我一直在周围的Googling显然GDI +是臭名昭著的随机抛出异常，很多人都有过这样的问题，但没有人有一个解决方案吧！我检查了系统，它有大量的RAM和交换空间。
现在，在过去，如果我做了一个IISRESET，然后问题消失，但它回来了几天。但我不认为我已经引起了内存泄漏，因为正如我上面说的有很多RAM +免费互换。

And occasionally it throws an exception "Parameter is not valid". Now i've been googling around and apparently GDI+ is infamous for throwing random exceptions, and lots of people have had this problem, but nobody has a solution to it! I've checked the system and it has plenty of both RAM and swap space. Now in the past if i do an 'iisreset' then the problem goes away, but it comes back in a few days. But i'm not convinced i've caused a memory leak, because as i say above there is plenty of ram+swap free.

任何人有什么办法呢？

推荐答案

停止使用GDI +，并开始使用WPF成像类（.NET 3.0）。这些都是GDI +类的大清理和调整性能。此外，它设置了一个位图链，让您可以轻松地以有效的方式进行对位多个动作。

Stop using GDI+ and start using the WPF Imaging classes (.NET 3.0). These are a major cleanup of the GDI+ classes and tuned for performance. Additionally, it sets up a "bitmap chain" that allows you to easily perform multiple actions on the bitmap in an efficient manner.

查找更多阅读关于<一个href=\"http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapsource.aspx\">BitmapSource

下面是一个空白的位图只是在等待接受一些像素开始的例子：

Here's an example of starting with a blank bitmap just waiting to receive some pixels:

using System.Windows.Media.Imaging;
class Program {
    public static void Main(string[] args) {
        var bmp = new WriteableBitmap(1184, 1900, 96.0, 96.0, PixelFormat.Bgr32, null);
    }
}

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