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Mapping XML Data Types to CLR Types

The following table describes the default mapping between the XML data types and the common language runtime (CLR) types.

The following table describes the default mappings of an XML data type to a CLR type.

Note

The xs and the xdt prefixes are mapped to the http://www.w3.org/2001/XMLSchema and the http://www.w3.org/2003/05/xpath-datatypes namespace URIs respectively.

XML Type

CLR Type

xs:anyURI

Uri

xs:base64Binary

Byte[]

xs:boolean

Boolean

xs:byte

SByte

xs:date

DateTime

xs:dateTime

DateTime

xs:decimal

Decimal

xs:double

Double

xs:duration

TimeSpan

xs:ENTITIES

String[]

xs:ENTITY

String

xs:float

Single

xs:gDay

DateTime

xs:gMonthDay

DateTime

xs:gYear

DateTime

xs:gYearMonth

DateTime

xs:hexBinary

Byte[]

xs:ID

String

xs:IDREF

String

xs:IDREFS

String[]

xs:int

Int32

xs:integer

Decimal

xs:language

String

xs:long

Int64

xs:gMmonth

DateTime

xs:Name

String

xs:NCName

String

xs:negativeInteger

Decimal

xs:NMTOKEN

String

xs:NMTOKENS

String[]

xs:nonNegativeInteger

Decimal

xs:nonPositiveInteger

Decimal

xs:normalizedString

String

xs:NOTATION

XmlQualifiedName

xs:positiveInteger

Decimal

xs:QName

XmlQualifiedName

xs:short

Int16

xs:string

String

xs:time

DateTime

xs:token

String

xs:unsignedByte

Byte

xs:unsignedInt

UInt32

xs:unsignedLong

UInt64

xs:unsignedShort

UInt16

xdt:dayTimeDuration

TimeSpan

xdt:yearMonthDuration

TimeSpan

xdt:untypedAtomic

String

xdt:anyAtomicType

Object

xs:anySimpleType

String

Document node

XPathNavigator

Element node

XPathNavigator

Attribute node

XPathNavigator

Namespace node

XPathNavigator

Text node

XPathNavigator

Comment node

XPathNavigator

Processing instruction node

XPathNavigator

See Also

Other Resources

Type Support in the System.Xml Classes