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Access数据类型和.NET数据类型映射

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Jun 07, 2016 pm 03:49 PM

.netaccessmicdatamappingtype

下表列出了 Microsoft Access 和这些数据类型与 Microsoft.NET Framework 数据类型与 OleDbType 枚举的方式中使用的最常见的数据类型。访问类型名称数据库数据类型 OLE DB 类型 .NET Framework 类型成员名称文本 VarWChar DBTYPE _ WSTR System.String O

下表列出了 Microsoft Access 和这些数据类型与 Microsoft.NET Framework 数据类型与 OleDbType 枚举的方式中使用的最常见的数据类型。

访问类型名称	数据库数据类型	OLE DB 类型	.NET Framework 类型	成员名称
文本	VarWChar	DBTYPE _ WSTR	System.String	OleDbType.VarWChar
备注	LongVarWCha r	DBTYPE _ WSTR	System.String	OleDbType.LongVarWChar
编号：字节	UnsignedTinyInt	DBTYPE _ UI 1	System.Byte	OleDbType.UnsignedTinyInt
是 / 否	Boolean 类型的值	DBTYPE_BOOL	System.Boolean	OleDbType.Boolean
日期 / 时间	日期时间	DBTYPE_DATE	System.DateTime	OleDbType.Date
货币	小数	DBTYPE_NUMERIC	System.Decimal	OleDbType.Numeric
编号：十进制	小数	DBTYPE_NUMERIC	System.Decimal	OleDbType.Numeric
编号： Double 类型的值	双击	DBTYPE_R8	System.Double	OleDbType.Double
自动编号（复制 ID）	GUID	DBTYPE_GUID	System.Guid	OleDbType.Guid
号码: （复制 ID）	GUID	DBTYPE_GUID	System.Guid	OleDbType.Guid
自动编号（长整型）	整数	DBTYPE_I4	System.Int 32	OleDbType.Integer
号码: (长整型）	整数	DBTYPE_I4	System.Int 32	OleDbType.Integer
OLE 对象	LongVarBinary	DBTYPE_BYTES	System.Byte 数组	OleDbType.LongVarBinary
编号： Single 类型的值	单个	DBTYPE_R4	System.Single	OleDbType.Single
编号： Integer 类型的值	smallint	DBTYPE_I2	System.Int 16	OleDbType.SmallInt
二进制	varbinary *	DBTYPE_BYTES	System.Byte 数组	OleDbType.Binary
超链接	VarWChar	DBTYPE _ WSTR	System.String	OleDbType.VarWChar

Statement

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