Getting error while trying to “choosedata source” for grid view

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2 days ago, I am trying to uninstalled Oracle Database from my PC. then i uninstalled Oracle completely and then re-installed it.

"schema could not be retrieved for this table. Please make sure the connection setting are correct and that the database is online.

Could not load file or assembly 'System.Data.Client.OracleClient, Version=4.0.0.0, Culture=neutral, PublickeyToken=b77a5c561934e089' or one of its dependencies,
The system cannot file the specified."

Please reply me as soon as possible.

What I have tried:

don't know what to do. changed Target framework from 4.5 to 4.0

Posted 14-Mar-16 2:03am

Nilesh Dalvi

Updated 14-Mar-16 2:22am

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Sascha Lefèvre · Answer 1 · 2016-03-14T02:22:00

Solution 1

Most likely, because of your re-installation of Oracle, the version of the DLL you need to reference has changed and the reference in your project(s) still points to the old version. Remove the reference and add a new one.

Posted 14-Mar-16 2:22am

Sascha Lefèvre