Unable to load "ico" files MagickMissingDelegateErrorException

[yasserjarouf]

I am able to convert "png" to "ico" but not vise-versa, what's the solution?

The code:
using (MagickImage image = new MagickImage(bytes)) { using (MemoryStream outputStream = new MemoryStream()) { image.Write(outputStream, MagickFormat.Png); return outputStream.ToArray(); } }

The exception:

ImageMagick.MagickMissingDelegateErrorException
HResult=0x80131500
Message=no decode delegate for this image format' @ error/blob.c/BlobToImage/460
Source=Magick.NET-Q16-AnyCPU
StackTrace:
at ImageMagick.NativeInstance.CheckException(IntPtr exception, IntPtr result)
at ImageMagick.MagickImage.NativeMagickImage.ReadBlob(IMagickSettings1 settings, Byte[] data, Int32 offset, Int32 length)
at ImageMagick.MagickImage.Read(Byte[] data, Int32 offset, Int32 length, IMagickReadSettings1 readSettings, Boolean ping, String fileName)
at ImageMagick.MagickImage.Read(Byte[] data, IMagickReadSettings1 readSettings)
at ImageMagick.MagickImage.Read(Byte[] data)
at ImageMagick.MagickImage..ctor(Byte[] data)
at Client.ConvertType(Byte[] bytes, MultimediaType targetType, String csvConfig) in F:\LocalRepo\Client.cs:line 35
at Tests.TestConvertICOToPNG() in F:\LocalRepo\Tests.cs:line 82
at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
at System.Reflection.MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)

[dlemstra]

Why you read an .ico from a byte array you will need to specify the format: new MagickImage(bytes, MagickFormat.Ico)

[yasserjarouf]

Thanks, that actually worked!