System.Data.SqlClient implementation problem

Hi all,

I am newbie on Xamarin. I just started developing an application for testing. It's empty now, only one button grid etc.

When I run application, It's running without error, but if I add System.Data.SqlClient from Nuget package manager and adding "using:system.data.sqlclient on my application, I cannot running application error says: "(1,1): error: Dependent project Test6.csproj failed to build, using old version."

Any idea?

Thanks..