Appendix B - Metadata Tables Reference

Appendix B

Metadata Tables Reference

Entry Types

BYTE	Unsigned 1-byte integer
SHORT	Signed 2-byte integer
USHORT	Unsigned 2-byte integer
ULONG	Unsigned 4-byte integer
RID: <table>	Record index to <table>
STRING	Offset in the #Strings stream
GUID	Offset in the #GUID stream
BLOB	Offset in the #Blob stream
<coded_token_type>	Coded token (see the Coded Token Types table at the end of the Appendix)

Module; RID type: 00; Token type: 0x00000000; Metadata (MD) streams: #~, #-

Entry Name	Entry Type	Comments
Generation	USHORT	For edit-and-continue
Name	STRING	No longer than 512 bytes
Mvid	GUID	Generated automatically
EncId	GUID	For edit-and-continue
EncBaseId	GUID	For edit-and-continue

TypeRef; RID type: 01; Token type: 0x01000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
ResolutionScope	ResolutionScope
Name	STRING
Namespace	STRING

TypeDef; RID type: 02; Token type: 0x02000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Flags	ULONG	Validity mask: 0x001173DBF
Name	STRING
Namespace	STRING
Extends	TypeDefOrRef	Base type
FieldList	RID: Field
MethodList	RID: Method

FieldPtr; RID type: 03; Token type: none; MD stream: #-

Entry Name	Entry Type	Comments
Field	RID: Field

Field; RID type: 04; Token type: 0x04000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Flags	USHORT	Validity mask: 0xB7F7
Name	STRING	No longer than 1023 bytes
Signature	BLOB	Cannot be 0

MethodPtr; RID type: 05; Token type: none; MD stream:#-

Entry Name	Entry Type	Comments
Method	RID: Method

Method; RID type: 06; Token type: 0x06000000; MD streams: #~, #-  

Entry Name	Entry Type	Comments
RVA	ULONG	Must be 0 or point at read-only section
ImplFlags	USHORT	Validity mask: 0x10BF
Flags	USHORT	Validity mask: 0xFDF7
Name	STRING	No longer than 1023 bytes
Signature	BLOB	Cannot be 0
ParamList	RID: Param

ParamPtr; RID type: 07; Token type: none; MD stream: #-

Entry Name	Entry Type	Comments
Param	RID: Param

Param; RID type: 08; Token type: 0x08000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Flags	USHORT	Validity mask: 0x3013
Sequence	USHORT	0 means return value
Name	STRING

InterfaceImpl; RID type: 09; Token type: 0x09000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Class	RID: TypeDef	Class implementing the interface
Interface	TypeDefOrRef	Implemented interface

MemberRef; RID type: 10; Token type: 0x0A000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Class	MemberRefParent	Cannot be TypeDef
Name	STRING	No longer than 1023 bytes
Signature	BLOB	Cannot be 0

Constant; RID type: 11; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
Type	BYTE
Parent	HasConstant
Value	BLOB

CustomAttribute; RID type: 12; Token type: 0x0C000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Parent	HasCustomAttribute
Type	CustomAttributeType
Value	BLOB

FieldMarshal; RID type: 13; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
Parent	HasFieldMarshal
NativeType	BLOB	Cannot be 0

DeclSecurity; RID type: 14; Token type: 0x0E000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Action	SHORT
Parent	HasDeclSecurity
PermissionSet	BLOB

ClassLayout; RID type: 15; Token Type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
PackingSize	USHORT	Power of 2, from 1 through 128
ClassSize	ULONG
Parent	RID: TypeDef

FieldLayout; RID type: 16; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
OffSet	ULONG	Offset in bytes or ordinal
Field	RID: Field

StandAloneSig; RID type: 17; Token type: 0x11000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Signature	BLOB	Cannot be 0

EventMap; RID type: 18; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
Parent	RID: TypeDef
EventList	RID: Event

EventPtr; RID type: 19; Token type: none; MD stream: #-

Entry Name	Entry Type	Comments
Event	RID: Event

Event; RID type: 20; Token type: 0x14000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
EventFlags	USHORT	0x0000, 0x0200, or 0x0600
Name	STRING
EventType	TypeDefOrRef

PropertyMap; RID type: 21; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
Parent	RID: TypeDef
PropertyList	RID: Property

PropertyPtr; RID type: 22; Token type: none; MD stream: #-

Entry Name	Entry Type	Comments
Property	RID: Property

Property; RID type: 23; Token type: 0x17000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
PropFlags	USHORT	Validity mask: 0x1600
Name	STRING
Type	BLOB	Property signature

MethodSemantics; RID type: 24; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
Semantic	USHORT
Method	RID: Method
Association	HasSemantic

MethodImpl; RID type: 25; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
Class	RID: TypeDef
MethodBody	MethodDefOrRef	Overriding method
MethodDeclaration	MethodDefOrRef	Overridden method

ModuleRef; RID type: 26; Token type: 0x1A000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Name	STRING	No longer than 512 bytes

TypeSpec; RID type: 27; Token type: 0x1B000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Signature	BLOB	Cannot be 0

Table: ENCLog; RID type: 28; Token type: none; MD stream: #-

Entry Name	Entry Type	Comments
Token	ULONG
FuncCode	ULONG

Table: ImplMap; RID type: 29; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
MappingFlags	USHORT	Validity mask: 0x0747
MemberForwarded	MemberForwarded	Method only
ImportName	STRING	Entry point name
ImportScope	RID: ModuleRef	ModuleRef to unmanaged DLL

ENCMap; RID type: 30; Token type: none; MD stream: #-

Entry Name	Entry Type	Comments
Token	ULONG

FieldRVA; RID type: 31; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
RVA	ULONG
Field	RID: Field

Assembly; RID type: 32; Token type: 0x20000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
HashAlgId	ULONG
MajorVersion	USHORT
MinorVersion	USHORT
BuildNumber	USHORT
RevisionNumber	USHORT
Flags	ULONG	Validity mask: 0x0000C031
PublicKey	BLOB
Name	STRING	No path, no extension
Locale	STRING

AssemblyProcessor; RID type: 33; Token type: none; Unused

Entry Name	Entry Type	Comments
Processor	ULONG

Table: AssemblyOS; RID type: 34; Token type: none; Unused

Entry Name	Entry Type	Comments
OSPlatformId	ULONG
OSMajorVersion	ULONG
OSMinorVersion	ULONG

AssemblyRef; RID type: 35; Token type: 0x23000000; MD streams: #~, #- 

Entry Name	Entry Type	Comments
MajorVersion	USHORT
MinorVersion	USHORT
BuildNumber	USHORT
RevisionNumber	USHORT
Flags	ULONG	0x00000000 or 0x00000001
PublicKeyOrToken	BLOB
Name	STRING	No path, no extension
Locale	STRING
HashValue	BLOB

AssemblyRefProcessor; RID type: 36; Token type: none; Unused

Entry Name	Entry Type	Comments
Processor	ULONG
AssemblyRef	RID: AssemblyRef

AssemblyRefOS; RID type: 37; Token type: none; Unused

Entry Name	Entry Type	Comments
OSPlatformId	ULONG
OSMajorVersion	ULONG
OSMinorVersion	ULONG
AssemblyRef	RID: AssemblyRef

File; RID type: 38; Token type: 0x26000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Flags	ULONG	0x00000000 or 0x00000001
Name	STRING	No path
HashValue	BLOB

ExportedType; RID type: 39; Token type: 0x27000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Flags	ULONG	Validity mask: 0x00000007
TypeDefId	ULONG	TypeDef token in another module
TypeName	STRING
TypeNamespace	STRING
Implementation	Implementation	File, ExportedType

ManifestResource; RID type: 40; Token type: 0x28000000; MD streams: #~, #-

Entry Name	Entry Type	Comments
Offset	ULONG
Flags	ULONG	0x000001 or 0x000002
Name	STRING
Implementation	Implementation	0, File, AssemblyRef

NestedClass; RID type: 41; Token type: none; MD streams: #~, #-

Entry Name	Entry Type	Comments
NestedClass	RID: TypeDef
EnclosingClass	RID: TypeDef

Coded Token Types 

Type	Tag
TypeDefOrRef (64): 3 referenced tables, tag size 2
TypeDef	0
TypeRef	1
TypeSpec	2
HasConstant (65): 3 referenced tables, tag size 2
Field	0
Param	1
Property	2
HasCustomAttribute (66): 19 referenced tables, tag size 5
Method	0
Field	1
TypeRef	2
TypeDef	3
Param	4
InterfaceImpl	5
MemberRef	6
Module	7
DeclSecurity	8
Property	9
Event	10
StandAloneSig	11
ModuleRef	12
TypeSpec	13
Assembly	14
AssemblyRef	15
File	16
ExportedType	17
ManifestResource	18
HasFieldMarshal (67): 2 referenced tables, tag size 1
Field	0
Param	1
HasDeclSecurity (68): 3 referenced tables, tag size 2
TypeDef	0
Method	1
Assembly	2
MemberRefParent (69): 5 referenced tables, tag size 3
TypeDef	0
TypeRef	1
ModuleRef	2
Method	3
TypeSpec	4
HasSemantics (70): 2 referenced tables, tag size 1
Event	0
Property	1
MethodDefOrRef (71): 2 referenced tables, tag size 1
Method	0
MemberRef	1
MemberForwarded (72): 2 referenced tables, tag size 1
Field	0
Method	1
Implementation (73): 3 referenced tables, tag size 2
File	0
AssemblyRef	1
ExportedType	2
CustomAttributeType (74): 5 referenced tables, tag size 3
TypeRef	0
TypeDef	1
Method	2
MemberRef	3
String	4
ResolutionScope (75): 4 referenced tables, tag size 2
Module	0
ModuleRef	1
AssemblyRef	2
TypeRef	3