private List <WeatherInfo> get5DayWeather()
{
string locale = txt_cityname.Text;
EindopdrachtEntities db = new EindopdrachtEntities();
DateTime beginDate = DateTime.Today.AddDays(-5);
DateTime endDate = DateTime.Today;
WeatherInfo[] histData = db.WeatherInfoes.Where(record => record.Timestamp >= beginDate && record.Timestamp <= endDate).ToArray();
return(histData.Where(data => data.Locale == locale).ToList());
}
private void drawGraph()
{
EindopdrachtEntities db = new EindopdrachtEntities();
List <WeatherInfo> dataForGraph = get5DayWeather();
List <DateTime> dates = dataForGraph.Select(n => n.Timestamp.Value.Date).Distinct().ToList();
List <double> temps = new List <double>();
if (radio_celsius.Checked)
{
foreach (var date in dates)
{
temps.Add(dataForGraph.Where(all => all.Timestamp.Value.Date == date).Average(avg => double.Parse(avg.Temperature)));
}
}
else
{
foreach (var date in dates)
{
double temp = dataForGraph.Where(all => all.Timestamp.Value.Date == date).Average(avg => double.Parse(avg.Temperature));
temps.Add(((9.0 / 5.0) * temp + 32));
}
}
chart1.Series.Clear();
//Create a new Chart and add data
var series = new Series("Gemiddelde temperatuur");
series.ChartType = SeriesChartType.Line;
series.Points.DataBindXY(dates.ToArray(), temps.ToArray());
//Kies het correcte label voor de Y Axis
if (radio_celsius.Checked)
{
chart1.ChartAreas[0].AxisY.LabelStyle.Format = "{#,##} \u00B0" + "C";
}
else
{
chart1.ChartAreas[0].AxisY.LabelStyle.Format = "{#,##} \u00B0" + "F";
}
chart1.Series.Add(series);
chart1.Series[0].IsVisibleInLegend = false;
chart1.ChartAreas[0].AxisX.IsMarginVisible = false;
chart1.ChartAreas[0].RecalculateAxesScale();
//kijkt of er een stad is ingevoert
if (txt_cityname.Text != "")
{
lbl_graphCityName.Text = txt_cityname.Text;
}
else if (txt_cityname.Text == "")
{
lbl_graphCityName.Text = "Emmen";
}
}