private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count != 0)
{
App selApp = e.AddedItems[0] as App;
DamWebAPI.ViewModel.Entity.Graphics graInfo = ViewModel.CreateNewGraphicDS(selApp);
DrawGhpics(graInfo);
tbExtreamInfo.Text = ViewModel.GetAppsInfo(graInfo) + getExtreamInfo();
//只有显示一支仪器时才显示这条信息
tbcaption.Text = string.Format("{0} {1} {2} {3}", selApp.AppName, selApp.X, selApp.Y, selApp.Z);
propertyGrid.SelectedObject = new GraphicProperty(c1Chart, tby1, tby2, tbcaption);
}
}
private void DrawGhpics(DamWebAPI.ViewModel.Entity.Graphics graInfo)
{
c1Chart.BeginUpdate();
double dashPixels = ResetChart();
//一次性查询所有的数据
var results = from i in graInfo.Lines
where i.IsShow == true
group i by i.UnitSymbol; //根据 物理量单位 判断是不是同一类量
List <CalculateValue> allCalcValues = null;
tby1.Text = tby2.Text = tbcaption.Text = "";
int lineIndex = 0;
//根据多少个Y轴进行循环
for (int i = 0; i < results.Count(); i++)
{
if (allCalcValues == null)
{
//避免多个枚举
allCalcValues = ViewModel.GetAllCalcValues(graInfo).ToList();
}
//有N个Y轴
Axis yAxis = null;
TextBlock tbTitle = null;
if (i == 0)
{
yAxis = c1Chart.View.AxisY;
yAxis.Name = "y1";
//set axis title
tbTitle = tby1;
yAxis.MajorGridStrokeDashes = new DoubleCollection(new double[] { dashPixels, dashPixels });
}
else
{
//创建新的axis
yAxis = new Axis
{
AxisType = AxisType.Y,
Position = AxisPosition.Far,
Name = "y" + (i + 1).ToString(),
};
c1Chart.View.Axes.Add(yAxis);
tbTitle = tby2;
//hid grid lines
yAxis.MajorGridStroke = Brushes.White;
yAxis.MinorGridStroke = Brushes.White;
}
string unitSymbol = results.ElementAt(i).Key;
var groupItems = results.ElementAt(i).ToList();
//物理量名称
string calcName = groupItems.First().ParamName;
if (groupItems.Count > 1)
{
//有多个相同单位的物理量
calcName = "单位";
}
tbTitle.Text = string.Format("{0} {1}: {2}", tbTitle.Text, calcName, unitSymbol);
for (int gi = 0; gi < groupItems.Count; gi++)
{
var item = groupItems.ElementAt(gi);
XYDataSeries ds = new XYDataSeries();
if (gi == 0)
{
ds.PlotElementLoaded += ds_PlotElementLoaded;
}
ds.Label = item.LegendName;
var valCollection = (from val in allCalcValues
where val.ParamId == item.ParamId
orderby val.Date
select val);
ObservableCollection <CalculateValue> collection = new ObservableCollection <CalculateValue>(valCollection);
//消除异常值
HandleErrorValue(collection);
ds.ItemsSource = collection;
ds.XValueBinding = new Binding("Date.DateTime");
ds.ValueBinding = new Binding("Val");
//ds.XValuesSource = (from val in valCollection
// select val.Date.DateTime).ToArray();
//ds.ValuesSource = (from val in valCollection
// select val.Val).ToArray();
ds.AxisY = yAxis.Name;
//set line style
lineIndex = setLineStyle(lineIndex, ds);
c1Chart.Data.Children.Add(ds);
}
}
c1Chart.EndUpdate();
}
