I have a SQL query that returns a Datatable:

var routesTable = _dbhelper.Select("SELECT [RouteId],[UserId],[SourceName],[CreationTime] FROM [Routes] WHERE UserId=@UserId AND RouteId=@RouteId", inputParams);

and then we can work with Datatable object of routesTable

if (routesTable.Rows.Count == 1)
            {
                result = new Route(routeId)
                {
                    Name = (string)routesTable.Rows[0]["SourceName"],
                    Time = routesTable.Rows[0]["CreationTime"] is DBNull ? new DateTime() : Convert.ToDateTime(routesTable.Rows[0]["CreationTime"])
                };

                result.TrackPoints = GetTrackPointsForRoute(routeId);
            }

I want to change this code to linq but I don't know how can I simulate Datatable in LINQ ,I wrote this part:

Route result = null;
            aspnetdbDataContext aspdb = new aspnetdbDataContext();
            var Result = from r in aspdb.RouteLinqs
                           where r.UserId == userId && r.RouteId==routeId
                           select r;


    ....

but I don't know how can I change this part:

if (routesTable.Rows.Count == 1)
            {
                result = new Route(routeId)
                {
                    Name = (string)routesTable.Rows[0]["SourceName"],
                     Time = routesTable.Rows[0]["CreationTime"] is DBNull ? new DateTime() : Convert.ToDateTime(routesTable.Rows[0]["CreationTime"])
                };

would you please tell me how can I do this?

EDIT here you can see the whole block of code in original

public Route GetById(int routeId, Guid userId)
        {
            Route result = null;
            var inputParams = new Dictionary<string, object>
                                  {
                                      {"UserId", userId},
                                      {"RouteId", routeId}
                                  };

            var routesTable = _dbhelper.Select("SELECT [RouteId],[UserId],[SourceName],[CreationTime] FROM [Routes] WHERE UserId=@UserId AND RouteId=@RouteId", inputParams);

            if (routesTable.Rows.Count == 1)
            {
                result = new Route(routeId)
                {
                    Name = (string)routesTable.Rows[0]["SourceName"],
                    Time = routesTable.Rows[0]["CreationTime"] is DBNull ? new DateTime() : Convert.ToDateTime(routesTable.Rows[0]["CreationTime"])
                };

                result.TrackPoints = GetTrackPointsForRoute(routeId);
            }

            return result;
        }