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POImageResizer disposing provided Image reference
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  1. POImageResizer disposing provided Image reference
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    copied!<p>We are using the image resizer from imageresizing.net and are seeing some weird behaviour.</p> <p>When we read an image in from a stream and then resize the image we can no longer access the properties of the original image.</p> <p>The following code will reproduce the issue.</p> <pre><code> static void Main(string[] args) { using(var httpPostedFileBaseImage = new FileStream(@"C:\test.jpg",FileMode.Open, FileAccess.Read, FileShare.Read)) { using(var uploadedImage = Image.FromStream(httpPostedFileBaseImage)) { Console.WriteLine(uploadedImage.Width); var resizedImage = ImageBuilder.Current.Build(uploadedImage, new ResizeSettings("width=110;height=83")); Console.WriteLine(uploadedImage.Width); } } } </code></pre> <p>Before the ImageBuilder line we are able to see the uploadedImage.Width fine but afterwards it throws an exception:</p> <pre><code>System.ArgumentException was unhandled HResult=-2147024809 Message=Parameter is not valid. Source=System.Drawing StackTrace: at System.Drawing.Image.get_Width() at ConsoleApplication6.Program.Main(String[] args) in C:\Users\Daniel\Desktop\ConsoleApplication6\ConsoleApplication6\Program.cs:line 25 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: </code></pre> <p>Is there something that we are doing wrong here or could this possibly be a bug in the image resizer?</p> <p>Note: the problem was originally from an asp.net mvc app that has images uploaded which is why the variable is called httpPostedFileBaseImage and we are using Image.FromStream instead of perhaps Image.FromFile</p> <p>The image is <img src="https://i.stack.imgur.com/vxPHL.png" alt="enter image description here"> but it appears to happen on most images.</p> <p>EDIT:</p> <p>Tried the following after the image resizing to no avail</p> <pre><code>httpPostedFileBaseImage.Seek(0, SeekOrigin.Begin); </code></pre> <p>EDIT2:</p> <p>This is what confused me <img src="https://i.stack.imgur.com/MjxMi.png" alt="enter image description here"></p> <p>The documentation seems to suggest that "it will not be disposed unless disposeSource=true, or am I misreading this?</p>
 

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