xtg-data-sqlclient is a simple library that allows you to connect with sql server. This library contains four asynchronous methods:

• ExecAsync: execute a setence in sql server.
• ExecQueryWithoutParamsAsync: execute a query without parameters.
• ExecQueryWithParamsAsync: execute a query with parameters.
• ExecProcedureDataTableWithParamsAsync: execute a stored procedure with parameters.

You can download nuget here.