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

Linda Hamilton
Release: 2025-01-07 11:17:41
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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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