How to fix error "System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

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How to fix this error when try to connect MySql database using c#.
The given error is ,

The type 'System.Data.Common.DbConnection' is
defined in an assembly that is not referenced. You must add a reference to assembly
'System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Thanks.

Posted 10-Jul-12 19:14pm

Ran 2

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Vani Kulkarni · Answer 1 · 2012-07-10T19:25:00

Solution 1

Do you have the "System.Data" assembly added as a reference to your project? That's what it appears to be complaining about.

Posted 10-Jul-12 19:25pm

Vani Kulkarni

Comments

Ran 2 11-Jul-12 1:31am

Yes Vani I've already used "System.data" in my project.

Sergey Alexandrovich Kryukov 11-Jul-12 1:47am

What do you mean "already used"? Referenced or not? Referenced, not "used". Huh?
--SA

pradiprenushe 11-Jul-12 1:41am

Have u modified Web.Config assemblies section?

Sergey Alexandrovich Kryukov 11-Jul-12 1:48am

What does 'u' mean?
--SA

Sergey Alexandrovich Kryukov 11-Jul-12 1:49am

Most likely that is as simple. Probably OP does not know what is a "reference". My 5 for the answer.
--SA

Usmaan Saeed 9-Feb-16 6:08am

I get this same issue that was reported above
after i have refernce 'System.Data.SqlServerCe.dll' version 4.0 in place of 'System.Data.SqlServerCe.dll' version 3.5 in my mobile project as i have already refernced 'System.Data.dll' version 2.0.0 in my project

Any solution