Sql Server 数据类型与 C# 数据类型对照

已验证类型（Sql Server 2012 & Visual Studio 2013）

Sql Server	C#	简写
bigint	System.Int64	long
tinyint	System.Byte	byte
binary(50)	System.Byte[]	byte[]
image	System.Byte[]	byte[]
varbinary(50)	System.Byte[]	byte[]
timestamp	System.Byte[]	byte[]
bit	System.Boolean	bool
char(10)	System.String	string
nchar(10)	System.String	string
ntext	System.String	string
nvarchar(50)	System.String	string
varchar(50)	System.String	string
text	System.String	string
date	System.DateTime	System.DateTime
datetime	System.DateTime	System.DateTime
datetime2(7)	System.DateTime	System.DateTime
smalldatetime	System.DateTime	System.DateTime
datetimeoffset(7)	System.DateTimeOffset	System.DateTimeOffset
time(7)	System.TimeSpan	System.TimeSpan
decimal(18,0)	System.Decimal	decimal
money	System.Decimal	decimal
numeric(18,0)	System.Decimal	decimal
smallmoney	System.Decimal	decimal
float	System.Double	double
int	System.Int32	int
real	System.Single	float
smallint	System.Int16	short

未验证类型

Sql Server	C#	简写
uniqueidentifier	System.Guid	System.Guid