SQL Server類型與dotnet類型的對應關係

.NET Framework Data Provider for SQL Server

SQL Server type	.NET Framework type	.NET Framework typed accessor	SqlType typed accessor
bigint	Int64	GetInt64()	GetSqlInt64()
binary	Byte[]	GetBytes()	GetSqlBinary()
bit	Boolean	GetBoolean()	GetSqlBit()
char	String Char[]	GetString() GetChars()	GetSqlString()
datetime	DateTime	GetDateTime()	GetSqlDateTime()
decimal	Decimal	GetDecimal()	GetSqlDecimal()
float	Double	GetDouble()	GetSqlDouble()
image	Byte[]	GetBytes()	GetSqlBinary()
int	Int32	GetInt32()	GetSqlInt32()
money	Decimal	GetDecimal()	GetSqlMoney()
nchar	String Char[]	GetString() GetChars()	GetSqlString()
ntext	String Char[]	GetString() GetChars()	GetSqlString()
numeric	Decimal	GetDecimal()	GetSqlDecimal()
nvarchar	String Char[]	GetString() GetChars()	GetSqlString()
real	Single	GetFloat()	GetSqlSingle()
smalldatetime	DateTime	GetDateTime()	GetSqlDateTime()
smallint	Int16	GetInt16()	GetSqlInt16()
smallmoney	Decimal	GetDecimal()	GetSqlDecimal()
sql_variant	Object *	GetValue() *	GetSqlValue() *
text	String Char[]	GetString() GetChars()	GetSqlString()
timestamp	Byte[]	GetBytes()	GetSqlBinary()
tinyint	Byte	GetByte()	GetSqlByte()
uniqueidentifier	Guid	GetGuid()	GetSqlGuid()
varbinary	Byte[]	GetBytes()	GetSqlBinary()
varchar	String Char[]	GetString() GetChars()	GetSqlString()

如想知道與其他資料庫的對應關係。看MSDN：http://msdn2.microsoft.com/en-us/library/4e5xt97a(vs.71).aspx