public static Chart GetChart(string type)
{
Chart chart = null;
if (type == g.day)
chart = dayChart;
else if (type == g.week)
chart = weekChart;
else if (type == g.month)
chart = monthChart;
if (chart == null)
{
chart = new Chart(type);
SetChart(chart, type);
}
else
chart.Update();
return chart;
}
public static void SetChart(Chart chart, string type)
{
if (type == g.day)
dayChart = chart;
else if (type == g.week)
weekChart = chart;
else if (type == g.month)
monthChart = chart;
}