WPF：同时显示折线和点
我有一个线段列表，每个线段都包含一个点列表。由于包含在同一画布上，我想显示每个线段并同时标记每个点位置（即带有椭圆）。我可以使用 ItemsControl 来显示段，但我不知道如何显示点。我开始实现一个从 Shape 派生的自定义控件，但必须有一种更简单的方法。预先感谢您的帮助。
public class VesselAnatomy : IEnumerable, INotifyCollectionChanged
{
...
List<BaseVessel> _Segments;
...
}
public class BaseVessel : INotifyPropertyChanged
{
...
ObservableCollection<Point> _VesselPoints;
public ObservableCollection<Point> VesselPoints
{
get
{
return _VesselPoints;
}
}
...
}
public MainWindow()
{
...
VesselAnatomy Vessels = new VesselAnatomy();
...
MasterContainer.DataContext = Vessels;
...
}
<ItemsControl x:Name="VesselDisplay"
Height="750"
Width="750"
ItemsSource="{Binding}">
<Polyline Points="{Binding VesselPoints, Converter={StaticResource ObsListPointConverter}}"
Stroke="Red"
StrokeThickness="7">
<Polyline.ToolTip>
<ToolTip>
<TextBlock Text="{Binding Name}"/>
</ToolTip>
</Polyline.ToolTip>
</Polyline>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
I have a list of line segments and each line segment contains a list of points. Being contained on the same canvas, I want to display each line segment and simultaneously mark each point location (ie w/ an ellipse). I can use an ItemsControl to display the segments but I'm stuck at how to display the points. I began implementing a custom control derived from Shape, but there must be an easier way. Thanks in advance for the help.
public class VesselAnatomy : IEnumerable, INotifyCollectionChanged
{
...
List<BaseVessel> _Segments;
...
}
public class BaseVessel : INotifyPropertyChanged
{
...
ObservableCollection<Point> _VesselPoints;
public ObservableCollection<Point> VesselPoints
{
get
{
return _VesselPoints;
}
}
...
}
public MainWindow()
{
...
VesselAnatomy Vessels = new VesselAnatomy();
...
MasterContainer.DataContext = Vessels;
...
}
<ItemsControl x:Name="VesselDisplay"
Height="750"
Width="750"
ItemsSource="{Binding}">
<Polyline Points="{Binding VesselPoints, Converter={StaticResource ObsListPointConverter}}"
Stroke="Red"
StrokeThickness="7">
<Polyline.ToolTip>
<ToolTip>
<TextBlock Text="{Binding Name}"/>
</ToolTip>
</Polyline.ToolTip>
</Polyline>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
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您也可以将 ItemsControl 用于点，只需更改 ItemsPanel 并绑定元素位置即可。
如果您有很多点并且此方法太慢，请尝试 http://msdn。 microsoft.com/en-us/magazine/dd483292.aspx
You can use an ItemsControl for the points aswell just change the ItemsPanel and bind the elements positions.
If you have lots of points and this method is too slow try http://msdn.microsoft.com/en-us/magazine/dd483292.aspx