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48

answers:

1

When I rotate an image on my the server. It causes an out of memory exception.

    /// <summary>
    /// Rotates the specified img.
    /// </summary>
    /// <param name="img">The img.</param>
    /// <param name="rotationAngle">The rotation angle.</param>
    /// <returns></returns>
    public static Bitmap Rotate(Image img, float rotationAngle)
    {
        //create an empty Bitmap image
        Bitmap bmp = new Bitmap(img.Width, img.Height);

        //turn the Bitmap into a Graphics object
        using (Graphics gfx = Graphics.FromImage(bmp))
        {
            //now we set the rotation point to the center of our image
            gfx.TranslateTransform((float) bmp.Width/2, (float) bmp.Height/2);

            //now rotate the image
            gfx.RotateTransform(rotationAngle);

            gfx.TranslateTransform(-(float) bmp.Width/2, -(float) bmp.Height/2);

            //set the InterpolationMode to HighQualityBicubic so to ensure a high
            //quality image once it is transformed to the specified size
            gfx.SmoothingMode = SmoothingMode.HighQuality;
            gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
            gfx.CompositingQuality = CompositingQuality.HighQuality;
            gfx.PixelOffsetMode = PixelOffsetMode.HighQuality;

            //now draw our new image onto the graphics object
            gfx.DrawImage(img, new Point(0, 0));
        }

        //return the image
        return bmp;
    }

The exception is occurring on this line: gfx.DrawImage(img, new Point(0, 0)); I've search around the internet and found a number of people with a similar problem, but no solution.

Is there a solution? Or is there another library I can use besides the GDI+ to rotate my images? Maybe there is something in WPF?

Stacktrace:

[OutOfMemoryException: Out of memory.]
   System.Drawing.Graphics.CheckErrorStatus(Int32 status) +1588745
   System.Drawing.Graphics.DrawImage(Image image, Int32 x, Int32 y) +227
   System.Drawing.Graphics.DrawImage(Image image, Point point) +26
   Chucksoft.Core.Drawing.ImageResizer.Rotate(Image img, Single rotationAngle) in C:\Projects\ChucksoftCore\Branches\2.5.0\Source\Chucksoft.Core\Drawing\ImageResizer.cs:245
   Chucksoft.Core.Drawing.ImageResizer.Rotate(Byte[] b, Single angle, ImageFormat format) in C:\Projects\ChucksoftCore\Branches\2.5.0\Source\Chucksoft.Core\Drawing\ImageResizer.cs:22
   TheMemorableMoments.Domain.Services.ImageService.Rotate(IEnumerable`1 media, User user, Single angle) in C:\Projects\TheMemorableMoments\Branches\2.1.0\Source\TheMemorableMoments\Domain\Services\ImageService.cs:34
   TheMemorableMoments.Domain.Services.ImageService.RotateLeft(List`1 media, User user) in C:\Projects\TheMemorableMoments\Branches\2.1.0\Source\TheMemorableMoments\Domain\Services\ImageService.cs:69
   TheMemorableMoments.UI.Controllers.User.PhotosController.Rotate(IMediaFiles media, Action`2 resizeMethod) in C:\Projects\TheMemorableMoments\Branches\2.1.0\Source\TheMemorableMoments.UI\Controllers\User\PhotosController.cs:408
   TheMemorableMoments.UI.Controllers.User.PhotosController.RotateLeft(Media media) in C:\Projects\TheMemorableMoments\Branches\2.1.0\Source\TheMemorableMoments.UI\Controllers\User\PhotosController.cs:396
   lambda_method(Closure , ControllerBase , Object[] ) +127
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +258
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +39
   System.Web.Mvc.&lt;&gt;c__DisplayClassd.&lt;InvokeActionMethodWithFilters&gt;b__a() +125
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +640
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +312
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +709
   System.Web.Mvc.Controller.ExecuteCore() +162
   System.Web.Mvc.&lt;&gt;c__DisplayClass8.&lt;BeginProcessRequest&gt;b__4() +58
   System.Web.Mvc.Async.&lt;&gt;c__DisplayClass1.&lt;MakeVoidDelegate&gt;b__0() +20
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +453
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)
A: 

I got it working. I never figured out the "Out Of Memory" Exception. Instead I used the RotateFlip method hanging of the Image Class. Looking at the RotateFlip code, in Reflector, it's a direct call into the Native Library. The drawback to this method, is you can only rotate in 90 degree increments. For me it's works great.

Chuck Conway