public class sqlCon
{
   protected static SqlConnection sqlCon;

   public static bool connectWithSqlDb()
   {
       sql.sqlConectionInfo.readConData();

       string conString = sql.sqlConectionInfo.prepareConString();
       sqlCon= new SqlConnection(conString);
       try
       {
           sqlCon.Open();
           sqlCon.Close();
           return true;
       }
       catch
       {
           return false;
       }
   }
}