the type or namesapce name 'OracleClient' does not exist in namespace namespace 'System.Data'

Question

Suthish Nair · Answer

you need reference. using System.Data.OracleClient;

Doha Msg · Answer

The types in System.Data.OracleClient are deprecated. The types are supported in version 4 of the .NET Framework but will be removed in a future release. Microsoft recommends that you use a third-party Oracle provider.