XNA/C# – Changes in the Xbox 360 Compact Framework

23 November, 2010 at 10:03am | XNA / C#

Compact Framework

A few months back I was partway through an article about XNA. I was going to cover how to implement efficient “Thread Local Storage” on the Xbox 360. Back in Game Studio v3.1 I found that the [ThreadStatic] attribute was not supported on the Xbox, and the only workable methods out of the box were the Thread.GetData(), Thread.SetData() methods. Those methods aren’t good performance-wise, so I proceeded to look at more efficient alternatives.

That article was going to detail the solution I came up with, and currently used in my engine. However upon revisiting the work recently and upgrading to the new v4.0 XNA, I found that I had some compile errors. Specifically ‘System.Threading.LocalDataStoreSlot’ was now missing, it’s that slow method of TLS I was using to benchmark against. So I commented that code out. I then figured why not for the hell of it try to enable the [ThreadStatic] code, that I had #ifdef’d to the WINDOWS build. Lo and behold, it now compiled on Xbox 360!

No idea if it’s any better performing than the old ‘LocalDataStoreSlot’ though, or better than the alternate method I came up with. That’s an exercise for another day.

My Googling Escapades

The only article I could find back when I was working on 3.1 about [ThreadStatic] on Xbox was this one. Doing a search now, I couldn’t find anything else new. I also tried searching for information about “LocalDataStoreSlot”, the class which was removed in the 4.0 upgrade. Again, I found nothing about the removal.

I also had noticed in some other code I have that the ‘System.Diagnostics.Trace’ class, and static functions therein were also removed. Now I start to scratch my head a little and wonder what else has disappeared, and what other cool things may have been added. My searches weren’t very fruitful, I just found a handful of forum posts which mentioned briefly some sort of changes to the Compact Framework (I’ve included them in my references at the bottom of this page). Nothing complete and comprehensive which listed all the differences.

The MSDN documentation does denote on the page for each class, type, function… which platforms it is available on. There’s also a dropdown to switch the framework version. I confess I found it a bit unwieldy to check up on. For example ‘ThreadStaticAttribute’ shows a ‘Silverlight’ entry in the dropdown box. On that page it denotes that it works on the Xbox 360. Where ‘LocalDataStoreSlot’ (the one which was removed), does not have Silverlight in it’s list, but does show XNA support for the 360 on the 3.5 Framework. Which tells me that it used to work, but now is deprecated in the Silverlight-compliant Framework.

Anyhow, checking these things one-by-one isn’t exactly viable.

Taking a dump

Knowing that there was a number of changes, but not knowing exactly what those changes were; I was still a little curious. What I did was to use the ‘ildasm’ tool to dump the types which existed in the .NET Framework DLL files.

For those equally curious, they reside here:
C:\Program Files\Microsoft XNA\XNA Game Studio\v3.1\References\Xbox360
and here:
C:\Program Files\Microsoft XNA\XNA Game Studio\v4.0\References\Xbox360
Or wherever your “\Program Files” directory lies.

With a little tinkering I could collate that output and determine the changes which occurred between the two versions of the Framework. I omitted the “Microsoft.Xna.Framework.Input.Touch” library from the output though, since new Xbox 360 projects do not include it as a reference. I’m unsure though as to why there is a DLL sitting in the “Xbox 360” directory. Possibly early Natal/Kinect support code? Heh, I doubt it. I’m guessing it’s just stub functionality for parity with the Windows 7 phones.

So anyhow, here’s the data I collected. Hopefully others may find this useful… Or possibly just point me to a website that had this information already. 🙂

System types removed from the Xbox 360 Compact Framework

These are types which used to exist in the Compact Framework for the Xbox 360, in the “XNA Game Studio” v3.1 release. But these are now missing from the new v4.0 release:

  Microsoft.Xna.Framework.BatteryChargeStatus
  Microsoft.Xna.Framework.Graphics.BasicDirectionalLight
  Microsoft.Xna.Framework.Graphics.ClipPlane
  Microsoft.Xna.Framework.Graphics.ClipPlaneCollection
  Microsoft.Xna.Framework.Graphics.Color
  Microsoft.Xna.Framework.Graphics.CompilerOptions
  Microsoft.Xna.Framework.Graphics.DepthStencilBuffer
  Microsoft.Xna.Framework.Graphics.DeviceNotSupportedException
  Microsoft.Xna.Framework.Graphics.DeviceStillDrawingException
  Microsoft.Xna.Framework.Graphics.DeviceType
  Microsoft.Xna.Framework.Graphics.DriverInternalErrorException
  Microsoft.Xna.Framework.Graphics.EffectFunction
  Microsoft.Xna.Framework.Graphics.EffectFunctionCollection
  Microsoft.Xna.Framework.Graphics.EffectParameterBlock
  Microsoft.Xna.Framework.Graphics.EffectPool
  Microsoft.Xna.Framework.Graphics.GammaRamp
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/AddressCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/BlendCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/CompareCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/CursorCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/DeclarationTypeCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/DeviceCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/DriverCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/FilterCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/LineCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/PixelShaderCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/PrimitiveCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/RasterCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/ShadingCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/StencilCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/TextureCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/VertexFormatCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/VertexProcessingCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCapabilities/VertexShaderCaps
  Microsoft.Xna.Framework.Graphics.GraphicsDeviceCreationParameters
  Microsoft.Xna.Framework.Graphics.MultiSampleType
  Microsoft.Xna.Framework.Graphics.OutOfVideoMemoryException
  Microsoft.Xna.Framework.Graphics.PackedVector.Normalized101010
  Microsoft.Xna.Framework.Graphics.PackedVector.Rgba32
  Microsoft.Xna.Framework.Graphics.PackedVector.UInt101010
  Microsoft.Xna.Framework.Graphics.PixelShader
  Microsoft.Xna.Framework.Graphics.PresentOptions
  Microsoft.Xna.Framework.Graphics.QueryUsages
  Microsoft.Xna.Framework.Graphics.RasterStatus
  Microsoft.Xna.Framework.Graphics.RenderState
  Microsoft.Xna.Framework.Graphics.RenderTarget
  Microsoft.Xna.Framework.Graphics.ResolveTexture2D
  Microsoft.Xna.Framework.Graphics.ResourceType
  Microsoft.Xna.Framework.Graphics.SaveStateMode
  Microsoft.Xna.Framework.Graphics.ShaderConstant
  Microsoft.Xna.Framework.Graphics.ShaderConstantCollection
  Microsoft.Xna.Framework.Graphics.ShaderConstantTable
  Microsoft.Xna.Framework.Graphics.ShaderProfile
  Microsoft.Xna.Framework.Graphics.ShaderRegisterSet
  Microsoft.Xna.Framework.Graphics.SpriteBlendMode
  Microsoft.Xna.Framework.Graphics.StateBlock
  Microsoft.Xna.Framework.Graphics.SwapEffect
  Microsoft.Xna.Framework.Graphics.TextureUsage
  Microsoft.Xna.Framework.Graphics.TextureWrapCoordinates
  Microsoft.Xna.Framework.Graphics.VertexElementMethod
  Microsoft.Xna.Framework.Graphics.VertexShader
  Microsoft.Xna.Framework.Graphics.VertexStream
  Microsoft.Xna.Framework.Graphics.VertexStreamCollection
  Microsoft.Xna.Framework.Net.InviteAcceptedEventArgs
  Microsoft.Xna.Framework.Net.NetworkException
  Microsoft.Xna.Framework.Net.NetworkNotAvailableException
  Microsoft.Xna.Framework.NoSuitableGraphicsDeviceException
  Microsoft.Xna.Framework.PowerLineStatus
  Microsoft.Xna.Framework.PowerStatus
  System.ApplicationException
  System.CharEnumerator
  System.Collections.ArrayList
  System.Collections.CaseInsensitiveComparer
  System.Collections.CaseInsensitiveHashCodeProvider
  System.Collections.CollectionBase
  System.Collections.Comparer
  System.Collections.Generic.SortedList`2
  System.Collections.Hashtable
  System.Collections.IHashCodeProvider
  System.Collections.Queue
  System.Collections.SortedList
  System.Collections.Specialized.BitVector32
  System.Collections.Specialized.BitVector32/Section
  System.Collections.Specialized.HybridDictionary
  System.Collections.Specialized.ListDictionary
  System.Collections.Specialized.NameObjectCollectionBase
  System.Collections.Specialized.NameObjectCollectionBase/KeysCollection
  System.Collections.Specialized.NameValueCollection
  System.Collections.Specialized.StringDictionary
  System.Collections.Stack
  System.ComponentModel.AddingNewEventArgs
  System.ComponentModel.AddingNewEventHandler
  System.ComponentModel.AttributeCollection
  System.ComponentModel.BindingList`1
  System.ComponentModel.CancelEventHandler
  System.ComponentModel.CollectionChangeAction
  System.ComponentModel.CollectionChangeEventArgs
  System.ComponentModel.CollectionChangeEventHandler
  System.ComponentModel.Component
  System.ComponentModel.ComponentResourceManager
  System.ComponentModel.Container
  System.ComponentModel.DataObjectAttribute
  System.ComponentModel.DataObjectMethodAttribute
  System.ComponentModel.DataObjectMethodType
  System.ComponentModel.DesignerCategoryAttribute
  System.ComponentModel.DesignTimeVisibleAttribute
  System.ComponentModel.EventDescriptor
  System.ComponentModel.EventDescriptorCollection
  System.ComponentModel.EventHandlerList
  System.ComponentModel.IBindingList
  System.ComponentModel.IBindingListView
  System.ComponentModel.ICancelAddNew
  System.ComponentModel.ICustomTypeDescriptor
  System.ComponentModel.IDataErrorInfo
  System.ComponentModel.IListSource
  System.ComponentModel.IRaiseItemChangedEvents
  System.ComponentModel.ISupportInitialize
  System.ComponentModel.ISupportInitializeNotification
  System.ComponentModel.ITypedList
  System.ComponentModel.ListChangedEventArgs
  System.ComponentModel.ListChangedEventHandler
  System.ComponentModel.ListChangedType
  System.ComponentModel.ListSortDescription
  System.ComponentModel.ListSortDescriptionCollection
  System.ComponentModel.MarshalByValueComponent
  System.ComponentModel.MemberDescriptor
  System.ComponentModel.PropertyDescriptorCollection
  System.ComponentModel.TypeDescriptor
  System.ComponentModel.Win32Exception
  System.Diagnostics.DefaultTraceListener
  System.Diagnostics.TextWriterTraceListener
  System.Diagnostics.Trace
  System.Diagnostics.TraceListener
  System.Diagnostics.TraceListenerCollection
  System.Globalization.CultureTypes
  System.Globalization.DaylightTime
  System.IO.Compression.CompressionMode
  System.IO.Compression.DeflateStream
  System.IO.Compression.GZipStream
  System.IO.InvalidDataException
  System.MarshalByRefObject
  System.Resources.ResourceReader
  System.Security.Policy.Evidence
  System.SerializableAttribute
  System.Text.ASCIIEncoding
  System.Text.RegularExpressions.RegexRunner
  System.Text.RegularExpressions.RegexRunnerFactory
  System.Text.UTF7Encoding
  System.Threading.EventResetMode
  System.Threading.Mutex
  System.Threading.ThreadPriority
  System.TimeZone
  System.TypedReference
  System.UriHostNameType
  System.UriPartial
  System.Xml.EntityHandling
  System.Xml.Formatting
  System.Xml.IHasXmlNode
  System.Xml.Schema.IXmlSchemaInfo
  System.Xml.Schema.ValidationEventArgs
  System.Xml.Schema.ValidationEventHandler
  System.Xml.Schema.XmlAtomicValue
  System.Xml.Schema.XmlSchemaAll
  System.Xml.Schema.XmlSchemaAnnotated
  System.Xml.Schema.XmlSchemaAnnotation
  System.Xml.Schema.XmlSchemaAny
  System.Xml.Schema.XmlSchemaAnyAttribute
  System.Xml.Schema.XmlSchemaAppInfo
  System.Xml.Schema.XmlSchemaAttribute
  System.Xml.Schema.XmlSchemaAttributeGroup
  System.Xml.Schema.XmlSchemaAttributeGroupRef
  System.Xml.Schema.XmlSchemaChoice
  System.Xml.Schema.XmlSchemaCompilationSettings
  System.Xml.Schema.XmlSchemaComplexContent
  System.Xml.Schema.XmlSchemaComplexContentExtension
  System.Xml.Schema.XmlSchemaComplexContentRestriction
  System.Xml.Schema.XmlSchemaComplexType
  System.Xml.Schema.XmlSchemaContent
  System.Xml.Schema.XmlSchemaContentModel
  System.Xml.Schema.XmlSchemaContentProcessing
  System.Xml.Schema.XmlSchemaContentType
  System.Xml.Schema.XmlSchemaDatatype
  System.Xml.Schema.XmlSchemaDatatypeVariety
  System.Xml.Schema.XmlSchemaDerivationMethod
  System.Xml.Schema.XmlSchemaDocumentation
  System.Xml.Schema.XmlSchemaElement
  System.Xml.Schema.XmlSchemaEnumerationFacet
  System.Xml.Schema.XmlSchemaException
  System.Xml.Schema.XmlSchemaExternal
  System.Xml.Schema.XmlSchemaFacet
  System.Xml.Schema.XmlSchemaFractionDigitsFacet
  System.Xml.Schema.XmlSchemaGroup
  System.Xml.Schema.XmlSchemaGroupBase
  System.Xml.Schema.XmlSchemaGroupRef
  System.Xml.Schema.XmlSchemaIdentityConstraint
  System.Xml.Schema.XmlSchemaImport
  System.Xml.Schema.XmlSchemaInclude
  System.Xml.Schema.XmlSchemaInference
  System.Xml.Schema.XmlSchemaInference/InferenceOption
  System.Xml.Schema.XmlSchemaInferenceException
  System.Xml.Schema.XmlSchemaInfo
  System.Xml.Schema.XmlSchemaKey
  System.Xml.Schema.XmlSchemaKeyref
  System.Xml.Schema.XmlSchemaLengthFacet
  System.Xml.Schema.XmlSchemaMaxExclusiveFacet
  System.Xml.Schema.XmlSchemaMaxInclusiveFacet
  System.Xml.Schema.XmlSchemaMaxLengthFacet
  System.Xml.Schema.XmlSchemaMinExclusiveFacet
  System.Xml.Schema.XmlSchemaMinInclusiveFacet
  System.Xml.Schema.XmlSchemaMinLengthFacet
  System.Xml.Schema.XmlSchemaNotation
  System.Xml.Schema.XmlSchemaNumericFacet
  System.Xml.Schema.XmlSchemaObjectCollection
  System.Xml.Schema.XmlSchemaObjectEnumerator
  System.Xml.Schema.XmlSchemaObjectTable
  System.Xml.Schema.XmlSchemaParticle
  System.Xml.Schema.XmlSchemaPatternFacet
  System.Xml.Schema.XmlSchemaRedefine
  System.Xml.Schema.XmlSchemaSequence
  System.Xml.Schema.XmlSchemaSimpleContent
  System.Xml.Schema.XmlSchemaSimpleContentExtension
  System.Xml.Schema.XmlSchemaSimpleContentRestriction
  System.Xml.Schema.XmlSchemaSimpleType
  System.Xml.Schema.XmlSchemaSimpleTypeContent
  System.Xml.Schema.XmlSchemaSimpleTypeList
  System.Xml.Schema.XmlSchemaSimpleTypeRestriction
  System.Xml.Schema.XmlSchemaSimpleTypeUnion
  System.Xml.Schema.XmlSchemaTotalDigitsFacet
  System.Xml.Schema.XmlSchemaType
  System.Xml.Schema.XmlSchemaUnique
  System.Xml.Schema.XmlSchemaUse
  System.Xml.Schema.XmlSchemaValidationException
  System.Xml.Schema.XmlSchemaValidationFlags
  System.Xml.Schema.XmlSchemaValidator
  System.Xml.Schema.XmlSchemaValidity
  System.Xml.Schema.XmlSchemaWhiteSpaceFacet
  System.Xml.Schema.XmlSchemaXPath
  System.Xml.Schema.XmlValueGetter
  System.Xml.Serialization.IXmlTextParser
  System.Xml.Serialization.SoapAttributeAttribute
  System.Xml.Serialization.SoapAttributeOverrides
  System.Xml.Serialization.SoapAttributes
  System.Xml.Serialization.SoapElementAttribute
  System.Xml.Serialization.SoapEnumAttribute
  System.Xml.Serialization.SoapIgnoreAttribute
  System.Xml.Serialization.SoapIncludeAttribute
  System.Xml.Serialization.SoapReflectionImporter
  System.Xml.Serialization.SoapTypeAttribute
  System.Xml.Serialization.UnreferencedObjectEventArgs
  System.Xml.Serialization.UnreferencedObjectEventHandler
  System.Xml.Serialization.XmlAnyAttributeAttribute
  System.Xml.Serialization.XmlAttributeEventArgs
  System.Xml.Serialization.XmlAttributeEventHandler
  System.Xml.Serialization.XmlElementEventArgs
  System.Xml.Serialization.XmlElementEventHandler
  System.Xml.Serialization.XmlNodeEventArgs
  System.Xml.Serialization.XmlNodeEventHandler
  System.Xml.ValidationType
  System.Xml.WhitespaceHandling
  System.Xml.XmlAttribute
  System.Xml.XmlAttributeCollection
  System.Xml.XmlCDataSection
  System.Xml.XmlCharacterData
  System.Xml.XmlComment
  System.Xml.XmlDeclaration
  System.Xml.XmlDocument
  System.Xml.XmlDocumentFragment
  System.Xml.XmlElement
  System.Xml.XmlEntityReference
  System.Xml.XmlImplementation
  System.Xml.XmlLinkedNode
  System.Xml.XmlNamedNodeMap
  System.Xml.XmlNode
  System.Xml.XmlNodeChangedAction
  System.Xml.XmlNodeChangedEventArgs
  System.Xml.XmlNodeChangedEventHandler
  System.Xml.XmlNodeList
  System.Xml.XmlNodeOrder
  System.Xml.XmlNodeReader
  System.Xml.XmlOutputMethod
  System.Xml.XmlProcessingInstruction
  System.Xml.XmlSignificantWhitespace
  System.Xml.XmlText
  System.Xml.XmlTextReader
  System.Xml.XmlTextWriter
  System.Xml.XmlUrlResolver
  System.Xml.XmlWhitespace
  System.Xml.XPath.XPathException
  System.Xml.XPath.XPathItem
  System.Xml.Xsl.XsltException

System types added to the Xbox 360 Compact Framework

These are types which did not exist in the Compact Framework for the Xbox 360, in the “XNA Game Studio” v3.1 release. But these are now present in the new v4.0 release:

  Microsoft.Win32.SafeHandles.SafeHandleMinusOneIsInvalid
  Microsoft.Win32.SafeHandles.SafeHandleZeroOrMinusOneIsInvalid
  Microsoft.Win32.SafeHandles.SafeWaitHandle
  Microsoft.Xna.Framework.Audio.AudioChannels
  Microsoft.Xna.Framework.Audio.DynamicSoundEffectInstance
  Microsoft.Xna.Framework.Audio.Microphone
  Microsoft.Xna.Framework.Audio.MicrophoneState
  Microsoft.Xna.Framework.Audio.NoMicrophoneConnectedException
  Microsoft.Xna.Framework.Color
  Microsoft.Xna.Framework.DisplayOrientation
  Microsoft.Xna.Framework.GamerServices.Achievement
  Microsoft.Xna.Framework.GamerServices.AchievementCollection
  Microsoft.Xna.Framework.GamerServices.AvatarRendererState
  Microsoft.Xna.Framework.GamerServices.GameUpdateRequiredException
  Microsoft.Xna.Framework.GamerServices.IAvatarAnimation
  Microsoft.Xna.Framework.GamerServices.InviteAcceptedEventArgs
  Microsoft.Xna.Framework.GamerServices.LeaderboardEntry
  Microsoft.Xna.Framework.GamerServices.LeaderboardIdentity
  Microsoft.Xna.Framework.GamerServices.LeaderboardKey
  Microsoft.Xna.Framework.GamerServices.LeaderboardOutcome
  Microsoft.Xna.Framework.GamerServices.LeaderboardReader
  Microsoft.Xna.Framework.GamerServices.LeaderboardWriter
  Microsoft.Xna.Framework.GamerServices.NetworkException
  Microsoft.Xna.Framework.GamerServices.NetworkNotAvailableException
  Microsoft.Xna.Framework.GamerServices.PropertyDictionary
  Microsoft.Xna.Framework.Graphics.AlphaTestEffect
  Microsoft.Xna.Framework.Graphics.BlendState
  Microsoft.Xna.Framework.Graphics.DepthStencilState
  Microsoft.Xna.Framework.Graphics.DirectionalLight
  Microsoft.Xna.Framework.Graphics.DualTextureEffect
  Microsoft.Xna.Framework.Graphics.EffectMaterial
  Microsoft.Xna.Framework.Graphics.EnvironmentMapEffect
  Microsoft.Xna.Framework.Graphics.GraphicsProfile
  Microsoft.Xna.Framework.Graphics.IEffectFog
  Microsoft.Xna.Framework.Graphics.IEffectLights
  Microsoft.Xna.Framework.Graphics.IEffectMatrices
  Microsoft.Xna.Framework.Graphics.IVertexType
  Microsoft.Xna.Framework.Graphics.NoSuitableGraphicsDeviceException
  Microsoft.Xna.Framework.Graphics.PackedVector.Bgra4444
  Microsoft.Xna.Framework.Graphics.RasterizerState
  Microsoft.Xna.Framework.Graphics.RenderTargetBinding
  Microsoft.Xna.Framework.Graphics.SkinnedEffect
  Microsoft.Xna.Framework.Graphics.VertexBufferBinding
  Microsoft.Xna.Framework.LaunchParameters
  Microsoft.Xna.Framework.Net.WriteLeaderboardsEventArgs
  Microsoft.Xna.Framework.TitleContainer
  System.AccessViolationException
  System.AppDomainManager
  System.AppDomainSetup
  System.ComponentModel.AsyncOperation
  System.ComponentModel.AsyncOperationManager
  System.ComponentModel.BackgroundWorker
  System.ComponentModel.CategoryAttribute
  System.ComponentModel.ComponentCollection
  System.ComponentModel.DescriptionAttribute
  System.ComponentModel.DoWorkEventArgs
  System.ComponentModel.DoWorkEventHandler
  System.ComponentModel.ITypeDescriptorContext
  System.ComponentModel.ProgressChangedEventArgs
  System.ComponentModel.ProgressChangedEventHandler
  System.ComponentModel.ReadOnlyAttribute
  System.ComponentModel.RunWorkerCompletedEventArgs
  System.ComponentModel.RunWorkerCompletedEventHandler
  System.ComponentModel.TypeConverterAttribute
  System.ContextStaticAttribute
  System.DataMisalignedException
  System.DateTimeOffset
  System.Diagnostics.DebuggerBrowsableAttribute
  System.Diagnostics.DebuggerBrowsableState
  System.Diagnostics.DebuggerDisplayAttribute
  System.Diagnostics.DebuggerTypeProxyAttribute
  System.Diagnostics.StackFrame
  System.Diagnostics.StackTrace
  System.DllNotFoundException
  System.Environment/SpecialFolder
  System.ExecutionEngineException
  System.FieldAccessException
  System.FileStyleUriParser
  System.FtpStyleUriParser
  System.GenericUriParser
  System.GenericUriParserOptions
  System.Globalization.HebrewCalendar
  System.Globalization.HijriCalendar
  System.Globalization.UmAlQuraCalendar
  System.HttpStyleUriParser
  System.InvalidTimeZoneException
  System.IO.FileLoadException
  System.IO.IsolatedStorage.IsolatedStorageException
  System.IO.IsolatedStorage.IsolatedStorageFile
  System.IO.IsolatedStorage.IsolatedStorageFileStream
  System.IO.UnmanagedMemoryStream
  System.LoaderOptimization
  System.MissingFieldException
  System.NotFiniteNumberException
  System.Reflection.AssemblyFileVersionAttribute
  System.Reflection.GenericParameterAttributes
  System.Reflection.InterfaceMapping
  System.Reflection.IReflect
  System.Reflection.LocalVariableInfo
  System.Reflection.MemberFilter
  System.Reflection.ReflectionTypeLoadException
  System.Reflection.ResourceAttributes
  System.Reflection.TargetException
  System.Reflection.TypeDelegator
  System.ResolveEventArgs
  System.ResolveEventHandler
  System.Resources.UltimateResourceFallbackLocation
  System.Runtime.CompilerServices.CompilationRelaxations
  System.Runtime.CompilerServices.CompilationRelaxationsAttribute
  System.Runtime.CompilerServices.RuntimeCompatibilityAttribute
  System.Runtime.InteropServices.AllowReversePInvokeCallsAttribute
  System.Runtime.InteropServices.ClassInterfaceAttribute
  System.Runtime.InteropServices.ClassInterfaceType
  System.Runtime.InteropServices.CoClassAttribute
  System.Runtime.InteropServices.ComDefaultInterfaceAttribute
  System.Runtime.InteropServices.COMException
  System.Runtime.InteropServices.ComImportAttribute
  System.Runtime.InteropServices.ComInterfaceType
  System.Runtime.InteropServices.DispIdAttribute
  System.Runtime.InteropServices.InterfaceTypeAttribute
  System.Runtime.InteropServices.SafeHandle
  System.Runtime.Serialization.OnDeserializedAttribute
  System.Runtime.Serialization.OnDeserializingAttribute
  System.Runtime.Serialization.OnSerializedAttribute
  System.Runtime.Serialization.OnSerializingAttribute
  System.Runtime.Serialization.StreamingContext
  System.Runtime.Serialization.StreamingContextStates
  System.Runtime.Versioning.TargetFrameworkAttribute
  System.RuntimeArgumentHandle
  System.Security.Permissions.CodeAccessSecurityAttribute
  System.Security.Permissions.SecurityAttribute
  System.Security.Permissions.SecurityPermissionAttribute
  System.Security.Permissions.SecurityPermissionFlag
  System.Security.Principal.IIdentity
  System.Security.Principal.IPrincipal
  System.Security.SecurityCriticalAttribute
  System.Security.SecuritySafeCriticalAttribute
  System.Security.SecurityState
  System.Security.SecurityTransparentAttribute
  System.Security.UnverifiableCodeAttribute
  System.ServiceModel.XmlSerializerFormatAttribute
  System.StringSplitOptions
  System.Text.DecoderFallbackException
  System.Text.EncoderFallbackException
  System.Threading.IOCompletionCallback
  System.Threading.NativeOverlapped
  System.Threading.Overlapped
  System.Threading.ParameterizedThreadStart
  System.Threading.RegisteredWaitHandle
  System.Threading.SendOrPostCallback
  System.Threading.SynchronizationContext
  System.Threading.SynchronizationLockException
  System.Threading.ThreadStartException
  System.Threading.ThreadState
  System.Threading.WaitOrTimerCallback
  System.ThreadStaticAttribute
  System.TimeZoneInfo
  System.TypeInitializationException
  System.UriBuilder
  System.UriIdnScope
  System.UriParser
  System.UriTypeConverter
  System.Xml.DtdProcessing
  System.Xml.Linq.ReaderOptions
  System.Xml.NamespaceHandling
  System.Xml.Serialization.XmlMappingAccess

Notables?

A number of deprecated collections are no longer available, the classic “ArrayList” from C# 1.0 among several others. Most of these would cause big performance problems with the Xbox garbage collector, so makes total sense that they have been trimmed out.

Additions which piqued my interest included “DebuggerDisplayAttribute”, and “StackTrace”/ “StackFrame”. The former I have a vague recollection trying to use before, it helps nicely format how a type is viewed in the Debugger. You can achieve the same functionality with ToString(), but if you need to use ToString() for runtime purposes and want something different shown in the debugger, it’s useful. “StackTrace” I was interested in because I believe the crash handler I’d written had a slightly different pathway between 360 and Windows. For 360 I had to throw an exception, and handle it. In the exception handling code I could pull out the callstack. With the StackTrace class you can just grab the callstack right off in the crash handler.

“System.Threading.ThreadState” too, I think I’d had to do a different workaround for the Xbox in the past. Nice to see that it’s now available.

Strangely I noticed “System.LocalDataStoreSlot” is not included in my removal list. Not sure why this is the case. Maybe I missed some key parameter in ‘ildasm’?

The Zune, or Windows 7 Phone?

Sorry, but I haven’t been developing for those platforms. Given some comments about the v4.0 release wanting to ‘standardize’ the Compact Framework to some kind of “Silverlight” API-set, I’d imagine the ones I’ve mentioned were added will probably exist for these platforms too. No idea though whether all the removed types I list apply to the Zune, many may not have even existed in the first place.

Er… So yeah, this is just covering the Xbox. Your mileage may vary with the other platforms.

Edit: Ah, Zune isn’t even supported by XNA 4.0!

References

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