How to Avoid GDI Exceptions When Saving Images to a Closed MemoryStream?

Memory Stream Closure Issue with Image.Save() in GDI

Problem:

When saving an image using Image.Save(...) with a memory stream, developers may encounter a GDI exception if the memory stream is closed before saving. However, in dynamic image creation scenarios, closing the stream before saving is necessary.

Code Scenario:

Bitmap image2;
using (Stream originalBinaryDataStream2 = new MemoryStream(data))
{
    image2 = new Bitmap(originalBinaryDataStream2);
}

In this scenario, the memory stream originalBinaryDataStream2 is closed when exiting the using block. Subsequently, saving the image image2 causes the GDI exception.

Solution:

Since memory streams do not require explicit closure, it is unnecessary to close them manually. However, closing the Bitmap object will automatically close the associated memory stream.

Bitmap image2;
using (Stream originalBinaryDataStream2 = new MemoryStream(data))
{
    image2 = new Bitmap(originalBinaryDataStream2);
}

image2.Dispose(); // Also closes the memory stream

By disposing of the Bitmap, the memory stream is closed properly, ensuring that the image can be saved without exceptions.

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