Sql server real datatype, what is the C# equivalent?

it is a Single

see here for more info on SQL Server to .Net DataTypes

Single is not the correct answer as it rounds the decimal part.. For instance 2.0799999 will be converted to 2.08. If there are no constraints regarding the rounding then it should be good.

Double can be used as the .NET Equivalent Datatype for Real Datatype of SQL Server

Double gets the exact value with out Rounding

The answer is Single. If you use double and your SQL field is type real it will error out. I tested this myself and confirmed.

in my project (acces -> firebird and ms sql -> c#) is real defined like single precission float point number...so I used float and everything is OK