For the following SQL Server datatypes, what would be the corresponding datatype in C#?
Exact Numerics
bigint
numeric
bit
smallint
decimal
smallmoney
int
tinyint
money
Approximate Numerics
float
real
Date and Time
date
datetimeoffset
datetime2
smalldatetime
datetime
time
Character Strings
char
varchar
text
Unicode Character Strings
nchar
nvarchar
ntext
Binary Strings
binary
varbinary
image
Other Data Types
cursor
timestamp
hierarchyid
uniqueidentifier
sql_variant
xml
table
(source: MSDN)
This is for SQL Server 2005. There are updated versions of the table for SQL Server 2008, SQL Server 2008 R2, SQL Server 2012 and SQL Server 2014.
SQL Server Data Types and Their .NET Framework Equivalents
The following table lists Microsoft SQL Server data types, their equivalents in the common language runtime (CLR) for SQL Server in the System.Data.SqlTypes namespace, and their native CLR equivalents in the Microsoft .NET Framework.
| SQL Server data type |
CLR data type (SQL Server) |
CLR data type (.NET Framework) |
| varbinary |
SqlBytes, SqlBinary |
Byte[] |
| binary |
SqlBytes, SqlBinary |
Byte[] |
| varbinary(1), binary(1) |
SqlBytes, SqlBinary |
byte, Byte[] |
| image |
None |
None |
| varchar |
None |
None |
| char |
None |
None |
| nvarchar(1), nchar(1) |
SqlChars, SqlString |
Char, String, Char[] |
| nvarchar |
SqlChars, SqlString |
String, Char[] |
| nchar |
SqlChars, SqlString |
String, Char[] |
| text |
None |
None |
| ntext |
None |
None |
| uniqueidentifier |
SqlGuid |
Guid |
| rowversion |
None |
Byte[] |
| bit |
SqlBoolean |
Boolean |
| tinyint |
SqlByte |
Byte |
| smallint |
SqlInt16 |
Int16 |
| int |
SqlInt32 |
Int32 |
| bigint |
SqlInt64 |
Int64 |
| smallmoney |
SqlMoney |
Decimal |
| money |
SqlMoney |
Decimal |
| numeric |
SqlDecimal |
Decimal |
| decimal |
SqlDecimal |
Decimal |
| real |
SqlSingle |
Single |
| float |
SqlDouble |
Double |
| smalldatetime |
SqlDateTime |
DateTime |
| datetime |
SqlDateTime |
DateTime |
| sql_variant |
None |
Object |
| User-defined type(UDT) |
None |
user-defined type |
| table |
None |
None |
| cursor |
None |
None |
| timestamp |
None |
None |
| xml |
SqlXml |
None |
