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POMethod or operation not implemented error on Binding
 

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    <p>I'm currently developing a Visual Studio plugin (VSPackage) which finally should be able to visualize call relations. In order to represent them I want to use the <a href="http://graphsharp.codeplex.com/">Graph# library</a> which manages the graph (avoiding overlapping edges etc.). Unfortunately I get the following error message at runtime in my XAML:</p> <p><strong>XamlParseException: The method or operation is not implemented.</strong></p> <p>The error pops up on the <code>&lt;graph:CallRelationGraphLayout Graph="{Binding RelationGraph}"/&gt;</code> tag.</p> <pre class="lang-xml prettyprint-override"><code>&lt;UserControl x:Class="Biocoder.InteractiveExploration.View.ExplorationControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:graphsharp="clr-namespace:GraphSharp.Controls;assembly=GraphSharp.Controls" xmlns:zoom="clr-namespace:WPFExtensions.Controls;assembly=WPFExtensions" xmlns:graph="clr-namespace:Biocoder.InteractiveExploration.Graph" xmlns:viewmodels="clr-namespace:Biocoder.InteractiveExploration.ViewModel" xmlns:controls="clr-namespace:Biocoder.InteractiveExploration.Controls" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300"&gt; &lt;UserControl.DataContext&gt; &lt;viewmodels:ExplorationToolViewModel/&gt; &lt;/UserControl.DataContext&gt; &lt;Grid&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="*"/&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;zoom:ZoomControl Grid.Row="1" Zoom="0.2" ZoomBoxOpacity="0.5" Background="Yellow"&gt; &lt;graph:CallRelationGraphLayout Graph="{Binding RelationGraph}"/&gt; &lt;/zoom:ZoomControl&gt; &lt;/Grid&gt; &lt;/UserControl&gt; </code></pre> <p>I also created own vertex, edge and graph layout classes. My graph should finally represent call relations (edges) between methods (vertices).</p> <p><strong>MethodVertex.cs</strong></p> <pre class="lang-cs prettyprint-override"><code>public class MethodVertex { public string ID { get; private set; } public bool IsMale { get; private set; } public MethodVertex(string id, bool isMale) { ID = id; IsMale = isMale; } public override string ToString() { return string.Format("{0}-{1}", ID, IsMale); } } </code></pre> <p><strong>RelationEdge.cs</strong></p> <pre class="lang-cs prettyprint-override"><code>public class RelationEdge : Edge&lt;MethodVertex&gt; { public string Id { get; private set; } public RelationEdge(string id, MethodVertex source, MethodVertex target) : base(source, target) { Id = id; } } </code></pre> <p><strong>CallRelationGraphLayout.cs</strong></p> <pre class="lang-cs prettyprint-override"><code>public class CallRelationGraphLayout : GraphLayout&lt;MethodVertex, RelationEdge, CallRelationGraph&gt; {} </code></pre> <p><strong>CallRelationGraph.cs</strong></p> <pre class="lang-cs prettyprint-override"><code>public class CallRelationGraph : BidirectionalGraph&lt;MethodVertex, RelationEdge&gt; { public CallRelationGraph() {} public CallRelationGraph(bool allowParallelEdges) : base(allowParallelEdges) { } public CallRelationGraph(bool allowParallelEdges, int vertexCapacity) : base(allowParallelEdges, vertexCapacity) {} } </code></pre> <p>In the <strong>ExplorationToolViewModel</strong> I declared the RelationGraph as follows:</p> <pre class="lang-cs prettyprint-override"><code>private CallRelationGraph _relationGraph; public CallRelationGraph RelationGraph { get { return _relationGraph; } set { if (value != _relationGraph) { _relationGraph = value; NotifyPropertyChanged("RelationGraph"); } } } public event PropertyChangedEventHandler PropertyChanged; public void NotifyPropertyChanged(string propertyName) { if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } </code></pre> <p>What I maybe also should mention is that I have the following error displayed sometimes but the project compiles and runs. </p> <p><em>GenericArguments[1 ], 'Biocoder.InteractiveExploration.Graph.RelationEdge', on 'GraphSharp.Algorithms.Layout.ILayoutAlgorithm`3[TVertex,TEdge,TGraph]' violates the constraint of type 'TEdge'.</em></p> <p>Maybe its the source of the problem but I ignored it so far since it compiled and I did it corresponding to this <a href="http://sachabarbs.wordpress.com/2010/08/31/pretty-cool-graphs-in-wpf/">tutorial</a>.</p> <p>The strange thing is that it actually works in a normal WPF application using the DLLs provided by Graph#. When I leave the Graph-property out the error doesn't show up so I guess it has to do with the Graph property. Any hints about how to solve this?</p> <p>Thank you very much in advance!</p>
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    1. COPlease also post the declaration of the `RelationGraph` property in `ExplorationToolViewModel`.
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    2. CO@Clemens Thanks! I just added the requested declaration as well. Everything should be fine in my opinion :S
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    3. COAnd also post the declaration of the `CallRelationGraphLayout` class
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