DataType 類別

The DataType object represents a SQL Server data type.

繼承階層

System. . :: . .Object
  Microsoft.SqlServer.Management.Smo..::..DataType

命名空間：  Microsoft.SqlServer.Management.Smo
組件：  Microsoft.SqlServer.Smo (在 Microsoft.SqlServer.Smo.dll 中)

語法

'宣告
Public Class DataType _
    Implements IXmlSerializable
'用途
Dim instance As DataType

public class DataType : IXmlSerializable

public ref class DataType : IXmlSerializable

type DataType =  
    class
        interface IXmlSerializable
    end

public class DataType implements IXmlSerializable

DataType 型別公開下列成員。

建構函式

	名稱	說明
	DataType() () () ()	Initializes a new instance of the DataType class.
	DataType(SqlDataType)	Initializes a new instance of the DataType class based on a specified SQL Server data type.
	DataType(UserDefinedDataType)	Initializes a new instance of the DataType class based on a specified user-defined data type.
	DataType(UserDefinedTableType)	Initializes a new instance of the DataType class based on a specified user-defined table type.
	DataType(UserDefinedType)	Initializes a new instance of the DataType class based on a specified user-defined type.
	DataType(XmlSchemaCollection)	Initializes a new instance of the DataType class based on a specified XML schema collection.
	DataType(SqlDataType, Int32)	Initializes a new instance of the DataType class based on a specified SQL Server data type with specified precision or maximum length.
	DataType(SqlDataType, String)	Initializes a new instance of the DataType class based on a specified SQL Server data type with the specified type.
	DataType(SqlDataType, Int32, Int32)	Initializes a new instance of the DataType class based on a specified SQL Server data type with the specified precision and scale.
	DataType(SqlDataType, String, String)	Initializes a new instance of the DataType class based on a specified SQL Server data type with the specified type and schema.

上層

屬性

	名稱	說明
	BigInt	Gets a data type that specifies the BigInt definition used in the data type.
	Bit	Gets a data type that specifies the Bit definition used in the data type.
	Date	The Date property returns a Date data type.
	DateTime	Gets a data type that specifies the DateTime definition used in the data type.
	Float	Gets a data type that specifies the Float definition used in the data type.
	Geography	The geography data type represents data in a round-earth coordinate system. The SQL Server geography data type stores ellipsoidal (round-earth) data, such as GPS latitude and longitude coordinates.
	Geometry	The Geometry property contains spatial data that represents information about the physical location and shape of geometric objects.
	HierarchyId	The HierarchyId property is used to identify a position in a hierarchy.
	Image	Gets a data type that specifies the Image definition used in the data type.
	Int	Gets a data type that specifies the Int definition used in the data type.
	MaximumLength	Gets the maximum length of the data type.
	Money	Gets a data type that specifies the Money definition used in the data type.
	Name	Gets the name of the data type.
	NText	Gets a data type that specifies the NText definition used in the data type.
	NumericPrecision	Gets or sets the numeric precision of the data type.
	NumericScale	Gets or sets the numeric scale of the data type.
	NVarCharMax	Gets a data type that specifies the VarCharMax definition used in the data type.
	Real	Gets a data type that specifies the Money definition used in the data type.
	Schema	Gets or sets the schema of the data type.
	SmallDateTime	Gets a data type that specifies the SmallDateTime definition used in the data type.
	SmallInt	Gets a data type that specifies the SmallInt definition used in the data type.
	SmallMoney	Gets a data type that specifies the SmallMoney definition used in the data type.
	SqlDataType	Gets a data type that specifies the SqlDataType definition used in the data type.
	SysName	Gets a data type that specifies the SysName definition used in the data type.
	Text	Gets a data type that specifies the Text definition used in the data type.
	Timestamp	Gets a data type that specifies the TimeStamp definition used in the data type.
	TinyInt	Gets a data type that specifies the TinyInt definition used in the data type.
	UniqueIdentifier	Gets a data type that specifies the UniqueIdentifier definition used in the data type.
	VarBinaryMax	Gets a data type that specifies the VarBinaryMax definition used in the data type.
	VarCharMax	Gets a data type that specifies the VarCharMax definition used in the data type.
	Variant	Gets a data type that specifies the Variant definition used in the data type.
	XmlDocumentConstraint	Gets or sets a value that indicates how an XML document is formatted.

上層

方法

	名稱	說明
	Binary	Returns an object that represents the specified type.
	Char	Returns an object that represents the specified type.
	DateTime2	datetime2 is an extension of the existing datetime type. It has a large date range and large default fractional precision. It has a length of at least 19 positions.
	DateTimeOffset	Returns values for year, month, day, valid time of day between 00:00:00 and 23:59:59:9999999 and offset, in hours, from UTC. It has a length of at least 25 positions.
	Decimal	Returns an object that represents the specified type.
	Equals(Object)	Determines whether the specified object is considered equal to the current data type. (覆寫 Object. . :: . .Equals(Object)。)
	Equals(DataType)	Determines whether the specified data types are considered equal.
	Finalize	(繼承自 Object。)
	GetHashCode	This method supports the SQL Server infrastructure and is not intended to be used directly from your code. (覆寫 Object. . :: . .GetHashCode() () () ()。)
	GetType	(繼承自 Object。)
	MemberwiseClone	(繼承自 Object。)
	NChar	Returns an object that represents the specified type.
	Numeric	Returns an object that represents the specified type.
	NVarChar	Returns an object that represents the specified type.
	Time	Returns values for any valid time of day between 00:00:00 and 23:59:59:9999999. It has a length of at least eight positions and contains the time in hours, minutes, seconds and fractional seconds.
	ToString	Returns the object in string format. (覆寫 Object. . :: . .ToString() () () ()。)
	UserDefinedDataType(String)	Returns an object that represents the specified type.
	UserDefinedDataType(String, String)	Returns an object that represents the specified type with the specified schema.
	UserDefinedTableType(String)	Returns an object that represents the specified type.
	UserDefinedTableType(String, String)	Returns an object that represents the specified type with the specified schema.
	UserDefinedType(String)	Returns an object that represents the specified type.
	UserDefinedType(String, String)	Returns an object that represents the specified type with the specified schema.
	VarBinary	Returns an object that represents the specified type.
	VarChar	Returns an object that represents the specified type.
	Xml(String)	Returns an object that represents the specified type.
	Xml(String, String)	Returns an object that represents the specified type and with the specified schema.
	Xml(String, String, XmlDocumentConstraint)	Returns an object that represents the specified type, schema and XML document constraint.

上層

明確 繼承 實作

	名稱	說明
	IXmlSerializable. . :: . .GetSchema	Not implemented.
	IXmlSerializable. . :: . .ReadXml	Deserializes the DAC type properties from an XML stream. 僅供參考之用。不支援。我們無法保證未來的相容性。.
	IXmlSerializable. . :: . .WriteXml	Serializes the data type properties to an XML stream. 僅供參考之用。不支援。我們無法保證未來的相容性。.

上層

備註

The DataType object is used to specify the type of data that is associated primarily with columns and parameters.

Thread Safety

此型別的任何公用靜態 (在 Microsoft Visual Basic 為共用) 成員具備多執行緒作業安全。不保證所有執行個體成員都是安全執行緒。

範例

處理資料類型

執行緒安全性

這個型別的任何公用 static (在 Visual Basic 中為 Shared) 成員都是執行緒安全的。並不是所有的執行個體成員都保證可以用於所有的執行緒。

請參閱

參考

Microsoft.SqlServer.Management.Smo 命名空間