Path vs PathGeometry dans DataTemplate

voila ce qui marche :

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public class RDHNode : INotifyPropertyChanged {......}

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Code:

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public class GraphSetNode { public ObservableCollection<RDHNode> mylist { get; set; } .... }

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Code:

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1 2	this.DataContext = mysource; //de type GraphSetNode

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Code:

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<ListBox x:Name="listBox1" Margin="0" Grid.Row="2" Background="#FF080707" ItemTemplate="{StaticResource viewpath}" ItemsSource="{Binding Path=mylist, Mode=OneWay}" > .....

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Code:

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<DataTemplate x:Key="viewpath" >   <Canvas Name="itemcanvas" Background="Transparent" PreviewMouseMove="itemcanvas_PreviewMouseMove" PreviewMouseLeftButtonDown="itemcanvas_PreviewMouseLeftButtonDown" PreviewMouseLeftButtonUp="itemcanvas_PreviewMouseLeftButtonUp" > <Path x:Name="pathnode" Stroke="Green" Fill="Black" Stretch="None" Data="{Binding Path =geoview1.geometryform}"   .......

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par contre je ne sais pas faire la même chose avec :

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public class GraphSetNode : ObservableCollection<RDHNode> {   .... }

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le Binding du DataTemplate ne donne rien, et puis je ne veux pas utiliser de DataTemplate typé moi mon problème c’est la forme géométrique que je gère dans le Path

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public class GraphSetNode : ObservableCollection<RDHNode> { .... }

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Code:

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this.DataContext = mysource; //de type GraphSetNode

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Tu accèdes à ta liste en bindant directement sur le DataContext :

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<ListBox x:Name="listBox1" Margin="0" Grid.Row="2" Background="#FF080707" ItemTemplate="{StaticResource viewpath}" ItemsSource="{Binding Path=., Mode=OneWay}">

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Le point dans le Path signifie que tu te bindes directement sur la source du Binding.

Ton DataTemplate doit présenter des RDHNode, alors il vaut mieux le lui dire pour qu'il puisse t'aider :

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<DataTemplate x:Key="viewpath" DataType="monNamespace:RDHNode">

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je reviens aux méthodes de mouvement :

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private Path selPath = null;//selected path private PathGeometry pg1 = null; private TranslateTransform tr = null; private Point p0, p1; private double dx, dy; private int count = 0;   private void itemcanvas_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e) {   dx = dy = 0; selPath = null; pg1 = null; FrameworkElement elem = e.OriginalSource as FrameworkElement; if (elem == null) return;   if (elem.GetType() != typeof(Path)) return; selPath = elem as Path; if (selPath == null) return;   selPath.CaptureMouse();   pg1 = selPath.Data as PathGeometry; if (pg1 == null ) return; tr = pg1.Transform as TranslateTransform; p0 = e.GetPosition(selPath);   }   private void itemcanvas_PreviewMouseMove(object sender, MouseEventArgs e) { if (selPath != null) {   p1 = e.GetPosition(selPath); dx = p1.X - p0.X; dy = p1.Y - p0.Y; tr.X += dx; tr.Y += dy; p0 = p1;     } }   private void itemcanvas_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e) { if (selPath == null) return;   //liberer la capture souris selPath.ReleaseMouseCapture(); dx = dy = 0; selPath = null; pg1 = null;     }

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sa bouge .....mais désq ue le mouvement de la sourie devient plus rapide la forme ne suit pas.


autre intrigue :
le canvas dans DataTemplate

Code:

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<DataTemplate x:Key="viewpath" >   <Canvas Name="itemcanvas" Background="Transparent" PreviewMouseMove="itemcanvas_PreviewMouseMove" PreviewMouseLeftButtonDown="itemcanvas_PreviewMouseLeftButtonDown" PreviewMouseLeftButtonUp="itemcanvas_PreviewMouseLeftButtonUp" > <Path x:Name="pathnode" Stroke="Green" Fill="Gray" Stretch="None" Data="{Binding Path =geoview1.geometryform}" Visibility="{Binding Path=geoview1.visibility1}"> </Path> ..........

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c'est un seul pour tous les Items ou alors pour chaque item il faut un host?