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DataType Property
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XmlAttributeAttribute.DataType Property

Gets or sets the XSD data type of the XML attribute generated by the XmlSerializer.

Namespace:  System.Xml.Serialization
Assembly:  System.Xml (in System.Xml.dll)

public string DataType { get; set; }

Property Value

Type: System.String
An XSD (XML Schema Document) data type, as defined by the World Wide Web Consortium (www.w3.org) document named "XML Schema: DataTypes".

The following table lists the XSD simple data types with their.NET equivalents.

For the XSD base64Binary and hexBinary data types, use an array of Byte structures, and apply a XmlArrayItemAttribute with the DataType property set to "base64Binary" or "hexBinary", as appropriate. For the XSD time and date data types, use the DateTime type and apply the XmlAttributeAttribute with the DataType set to "date" or "time".

For every XSD type that is mapped to a string, apply the XmlAttributeAttribute with its DataType property set to the XSD type. However, this does not change the serialization format, only the schema for the member.

NoteNote

The property is case-sensitive, so you must set it exactly to one of the XSD data types.

NoteNote

Passing binary data as an XML element is more efficient than passing it as an XML attribute.

For more information about XML data types, see the World Wide Web Consortium (www.w3.org) document named "XML Schema Part 2: Datatypes".

XSD data type

.NET data type

anyURI

String

base64Binary

Array of Byte objects

boolean

Boolean

byte

SByte

date

DateTime

dateTime

DateTime

decimal

Decimal

double

Double

ENTITY

String

ENTITIES

String

float

Single

gDay

String

gMonth

String

gMonthDay

String

gYear

String

gYearMonth

String

hexBinary

Array of Byte objects

ID

String

IDREF

String

IDREFS

String

int

Int32

integer

String

language

String

long

Int64

Name

String

NCName

String

negativeInteger

String

NMTOKEN

String

NMTOKENS

String

normalizedString

String

nonNegativeInteger

String

nonPositiveInteger

String

NOTATION

String

positiveInteger

String

QName

XmlQualifiedName

duration

String

string

String

short

Int16

time

DateTime

token

String

unsignedByte

Byte

unsignedInt

UInt32

unsignedLong

UInt64

unsignedShort

UInt16

The following example applies the XmlAttributeAttribute to two members, and sets the DataType property set to different values.


public class Group{
   [XmlAttribute(DataType = "string")]
   public string Name;
	
   [XmlAttribute (DataType = "base64Binary")]
   public byte[] Hex64Code;
}



.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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