public DateTime GetServerDate(HOTBOXDBEntities db)
{
var dateRaw = db.Database.SqlQuery <DateTime>("SELECT GETDATE()");
var serverDate = dateRaw.AsEnumerable().First();
return(serverDate);
}
public List <tblStrategy> GetPValues()
{
using (var db = new HOTBOXDBEntities())
{
try
{
var pvalues = db.tblStrategies.Where(x => x.Point.StartsWith("P")).ToList();
return(pvalues);
}
catch
{ return(null); }
}
}
// Return a list of data-values from one module from 'minutes' ago to current time
public List <tblPointValue> GetValuesFromTime(string pointname, int minutes)
{
using (var db = new HOTBOXDBEntities())
{
try {
// Gets server DateTime, and reduces it by 'minutes' to get the desired start date
var serverDate = GetServerDate(db);
var startDate = serverDate.AddMinutes(-minutes);
int indexNumber = Convert.ToInt32(db.tblStrategies.Where(x => x.Point == pointname).Select(x => x.theIndex).FirstOrDefault());
var pointvalues = db.tblPointValues.Where(x => x.theIndex == indexNumber && (x.DataTime >= startDate)).OrderBy(x => x.DataTime).ToList();
return(pointvalues);
}
catch
{ return(null); }
}
}
