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POWPF TreeView : How to create header and nodes from different models
 

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  1. POWPF TreeView : How to create header and nodes from different models
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    <p>I am working on a wpf project where I have to build tree nodes recursively. What I wanted to do is assign header for the nodes from another model for example:</p> <pre><code> Request Header --&gt; node1 --&gt;node1.1 --&gt;node1.2 Response Header --&gt;node2 --&gt;node2.1 --&gt;node2.2 // building tree public List&lt;TreeModel&gt; BuildTree(IEnumerable&lt;string&gt; strings) { return ( from s in strings let split = s.Split('.') group s by s.Split('.')[0] into g select new TreeModel { Value = g.Key, Children = BuildTree( from s in g where s.Length &gt; g.Key.Length + 1 select s.Substring(g.Key.Length + 1)) } ).ToList(); } // Here I am creating static MessageElementModel objects </code></pre> <p>The reason why I am creating these objects is I want to associate them to another control(combobox) to create on select event but this is not part of my question.</p> <pre><code> public List&lt;MessageElementModel&gt; GetAllMessageElements() { string[] request = { "NetworkControl.AlternateIndexText.Value" }; string[] request2 = { "NetworkControl.NetworkControl.AddressData.TransactionOriginatorID.Value" }; string[] request3 = { "VehicleSummary.VehicleIdentification.IdentificationID.Value" }; transactionTypeWSRequestXmlType = TransactionTypeModle.TransactionTypeWSRequestXmlType; transactionTypeWSResponseXmlType = TransactionTypeModel.TransactionTypeWSRequestXmlType; messageElements.Add(new MessageElementModel(1, transactionTypeWSRequestXmlType,transactionTypeWSResponseXmlType, TreeNode.BuildTree(request))); messageElements.Add(new MessageElementModel(1, transactionTypeWSRequestXmlType,transactionTypeWSResponseXmlType, TreeNode.BuildTree(request2))); return messageElements; } The transactionTypeWSRequestXmlType,transactionTypeWSResponseXmlType and transactionTypeWSRequestXmlType,transactionTypeWSResponseXmlType are the headers of the tree (TreeNode.BuildTree(request)) </code></pre> <p>In the XAML I have </p> <p> </p> <pre><code> &lt;HierarchicalDataTemplate DataType="{x:Type local:TreeViewModel}" ItemsSource="{Binding Children}"&gt; &lt;CheckBox IsChecked="{Binding Value}" Content="{Binding Value}" /&gt; &lt;/HierarchicalDataTemplate&gt; &lt;/TreeView.Resources&gt; &lt;/TreeView&gt; How can I add header from another model? for this case transactionTypeWSRequestXmlType,transactionTypeWSResponseXmlType and transactionTypeWSRequestXmlType,transactionTypeWSResponseXmlType to the treeview for the nodes I am creating in the TreeNode.BuildTree(request) recursively? and the same for var response; var treeNode = new ObservableCollection&lt;TransactionTypeViewModel&gt;() { request, response }; } return treeNode; } In the messageElementViewModel I am getting the constructed nods(TreeNodeModel)+roots(TransactionTypeViewModel) here I addded Id so that when I chose any transaction from my Transaction combobox the tree will display only matching Ids public List&lt;MessageElementViewModel&gt; GetAllTreeNodesList() { messageElements = TransactionType.getAllTreeNodes().Select(msgElements =&gt; new MessageElementViewModel { Id = msgElements.Id, Request = msgElements.Request, Response = msgElements.Response, }).ToList(); return messageElements; } //make it observable public ObservableCollection&lt;MessageElementViewModel&gt; GetAllTreeNodes() { observableMessageElement = new ObservableCollection&lt;MessageElementViewModel&gt; (messageElements); return observableMessageElement; } //xaml binding to MessageElementViewModel where I have the roots and nodes combination How can I bind all these together in the xaml? </code></pre>
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    1. USAyda Sayed
    1. USAyda Sayed
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    1. This table or related slice is empty.
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    1. COCreate a single ViewModel to which the View Binds to, then use this ViewModel to "wrap" the models.
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      1. POWPF TreeView : How to create header and nodes from different models
      1. USFederico Berasategui
    2. COHighCore Can you please give me more detail? maybe a code example
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      1. POWPF TreeView : How to create header and nodes from different models
      1. USAyda Sayed
    3. COIf you want to differentiate different types of nodes, the easiest way to do it is provide distinct types for each type of node, and then create different data templates for each of these node types.
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      1. POWPF TreeView : How to create header and nodes from different models
      1. USWill
 

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