常见 SQL Server 数据类型的 C# 等效项是什么？

SQL Server 数据类型的 C# 等效项

精确数值

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
bigint	SqlInt64	Int64
numeric	SqlDecimal	Decimal
bit	SqlBoolean	Boolean
smallint	SqlInt16	Int16
decimal	SqlDecimal	Decimal
smallmoney	SqlMoney	Decimal
int	SqlInt32	Int32
tinyint	SqlByte	Byte
money	SqlMoney	Decimal

近似值数字

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
float	SqlSingle	Single
real	SqlDouble	Double

日期和时间

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
date	SqlDate	None
datetimeoffset	SqlDateTimeOffset	None
datetime2	SqlDateTime2	None
smalldatetime	None	DateTime
datetime	SqlDateTime	DateTime
time	SqlTime	None

字符串

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
char	SqlChars, SqlString	String, Char[]
varchar	None	None
text	None	None

Unicode字符字符串

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
nchar	SqlChars, SqlString	String, Char[]
nvarchar	SqlChars, SqlString	String, Char[]
ntext	None	None

二进制字符串

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
binary	SqlBytes, SqlBinary	Byte[]
varbinary	SqlBytes, SqlBinary	Byte[]
image	None	None

其他数据类型

SQL Server Data Type	C# Data Type (SQL Server)	C# Data Type (.NET Framework)
cursor	None	None
timestamp	None	None
hierarchyid	None	None
uniqueidentifier	SqlGuid	Guid
sql_variant	None	Object
xml	SqlXml	None
table	None	None

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