Comparison between SQL Server and ADO. Net Data Types

The following table lists the. NET Framework type, dbtype, sqldbtype enumeration, and sqldatareader accessors.

SQL Server database engine type	. NET Framework type	Sqldbtype Enumeration	Sqldatareader sqltypes type accesser	Dbtype Enumeration	Sqldatareader dbtype type accessors
Bigint	Int64	Bigint	Getsqlint64	Int64	Getint64
Binary	Byte []	Varbinary	Getsqlbinary	Binary	Getbytes
Bit	Boolean	Bit	Getsqlboolean	Boolean	Getboolean
Char	String	Char	Getsqlstring	Ansistringfixedlength,	Getstring
	Char []			String	Getchars
Date (SQL Server 2008 only)	Datetime	Date	Getsqldatetime	Date	Getdatetime
Datetime	Datetime	Datetime	Getsqldatetime	Datetime	Getdatetime
Datetime2 (SQL Server 2008 only)	Datetime2	Datetime2	Getsqldatetime	Datetime2	Getdatetime
Datetimeoffset (SQL Server 2008 only)	Datetimeoffset	Datetimeoffset	None	Datetimeoffset	Getdatetimeoffset
Decimal	Decimal	Decimal	Getsqldecimal	Decimal	Getdecimal
Filestream attributes (varbinary (max)	Byte []	Varbinary	Getsqlbytes	Binary	Getbytes
Float	Double	Float	Getsqldouble	Double	Getdouble
Image	Byte []	Binary	Getsqlbinary	Binary	Getbytes
Int	Int32	Int	Getsqlint32	Int32	Getint32
Money	Decimal	Money	Getsqlmoney	Decimal	Getdecimal
Nchar	String	Nchar	Getsqlstring	Stringfixedlength	Getstring
	Char []				Getchars
Ntext	String	Ntext	Getsqlstring	String	Getstring
	Char []				Getchars
Numeric	Decimal	Decimal	Getsqldecimal	Decimal	Getdecimal
Nvarchar	String	Nvarchar	Getsqlstring	String	Getstring
	Char []				Getchars
Real	Single	Real	Getsqlsingle	Single	Getfloat
Rowversion	Byte []	Timestamp	Getsqlbinary	Binary	Getbytes
Smalldatetime	Datetime	Datetime	Getsqldatetime	Datetime	Getdatetime
Smallint	Int16	Smallint	Getsqlint16	Int16	Getint16
Smallmoney	Decimal	Smallmoney	Getsqldecimal	Decimal	Getdecimal
SQL _variant	Object *	Variant	Getsqlvalue *	Object	Getvalue *
Text	String	Text	Getsqlstring	String	Getstring
	Char []				Getchars
Time (SQL Server 2008 only)	Timespan	Time	None	Time	Getdatetime
Timestamp	Byte []	Timestamp	Getsqlbinary	Binary	Getbytes
Tinyint	Byte	Tinyint	Getsqlbyte	Byte	Getbyte
Uniqueidentifier	Guid	Uniqueidentifier	Getsqlguid	Guid	Getguid
Varbinary	Byte []	Varbinary	Getsqlbinary	Binary	Getbytes
Varchar	String	Varchar	Getsqlstring	Ansistring, string	Getstring
	Char []				Getchars
XML	XML	XML	Getsqlxml	XML	None