Image.FromStream（）方法返回无效参数异常 [英] Image.FromStream() method returns Invalid Argument exception

问题描述

我从一个智能摄像头成像仪捕捉图像，并通过套接字编程接收来自摄像头的字节数组（.NET应用程序是客户端，摄像头是服务器）。

I am capturing images from a smart camera imager and receiving the byte array from the camera through socket programming (.NET application is the client, camera is the server).

现在的问题是，我得到在运行时System.InvalidArgument例外。

The problem is that i get System.InvalidArgument exception at runtime.

private Image byteArrayToImage(byte[] byteArray) 
{
    if(byteArray != null) 
    {
        MemoryStream ms = new MemoryStream(byteArray);
        return Image.FromStream(ms, false, false); 
        /*last argument is supposed to turn Image data validation off*/
    }
    return null;
}

我寻觅在许多论坛这个问题，并试图通过许多专家给出的建议，但没有任何帮助。

I have searched this problem in many forums and tried the suggestions given by many experts but nothing helped.

我不认为有与字节数组作为这样的任何问题，因为当我喂相同的字节数组我用VC ++ MFC客户端应用程序，我得到的图像。但是，这并不以某种方式在C＃.NET工作。

I dont think there is any problem with the byte array as such because When i feed the same byte array into my VC++ MFC client application, i get the image. But this doesn't somehow work in C#.NET.

谁能帮我？

P.S：

其他方法我试过来完成相同的任务是：

Other methods i've tried to accomplish the same task are:

1。

private Image byteArrayToImage(byte[] byteArray)
{
    if(byteArray != null) 
    {
        MemoryStream ms = new MemoryStream();
        ms.Write(byteArray, 0, byteArray.Length);
        ms.Position = 0; 
        return Image.FromStream(ms, false, false);
    }
    return null;
}

2。

private Image byteArrayToImage(byte[] byteArray) 
{
    if(byteArray != null) 
    {
        TypeConverter tc = TypeDescriptor.GetConverter(typeof(Bitmap));
        Bitmap b = (Bitmap)tc.ConvertFrom(byteArray);
        return b;
    }
    return null;
}

无上述方法的工作。请帮助。

None of the above methods worked. Kindly help.

推荐答案

Image.FromStream（）预计只包含一个图像流！

Image.FromStream() expects a stream that contains ONLY one image!

它重置stream.Position为0。我已经有一个包含多个图片或其他的东西流，你必须阅读的图像数据转换成字节数组，初始化的MemoryStream 与

It resets the stream.Position to 0. I've you have a stream that contains multiple images or other stuff, you have to read your image data into a byte array and to initialize a MemoryStream with that:

Image.FromStream（新的MemoryStream（myImageByteArray））;

在的MemoryStream 必须保持打开状态，只要图像中使用。

The MemoryStream has to remain open as long as the image is in use.

我lerned了艰辛的道路了。 ：）

I've lerned that the hard way too. :)

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