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What are the Equivalent C# Data Types for SQL Server Data Types?

Jan 07, 2025 am 11:17 AM

What are the Equivalent C# Data Types for SQL Server Data Types?

C# equivalent SQL Server data types

Use the correct data type in C# that corresponds to the data stored in the SQL Server database Very important. The following table provides various SQL Server data types and their corresponding C# Equivalents:

Exact number

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.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

Approximate number

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.NET Framework）
float	SqlDouble	Double
real	SqlSingle	Single

Date and Time

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.NET Framework）
date	N/A	N/A
datetimeoffset	N/A	N/A
datetime2	N/A	N/A
smalldatetime	SqlDateTime	DateTime
datetime	SqlDateTime	DateTime
time	N/A	N/A

Character String

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.NET Framework）
char	N/A	N/A
varchar	N/A	N/A
text	N/A	N/A

Unicode String

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.NET Framework）
nchar	N/A	N/A
nvarchar	N/A	N/A
ntext	N/A	N/A

Binary string

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.NET Framework）
binary	SqlBinary	Byte[]
varbinary	SqlBinary	Byte[]
image	N/A	N/A

Other data types

SQL Server 数据类型	C# 数据类型（SQL Server）	C# 数据类型（.NET Framework）
cursor	N/A	N/A
timestamp	N/A	N/A
hierarchyid	N/A	N/A
uniqueidentifier	SqlGuid	Guid
sql_variant	N/A	Object
xml	SqlXml	N/A
table	N/A	N/A

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