填充樹視圖控件

我有一個N-Ary沒有以任何方式排序的樹，每個節點可以有0-N個子節點。鑑於下面的數據結構，假設你有一個TermNode數組，並且該數組是TreeView的第一級，我該如何填充樹視圖？我無法想出一個遞歸的方式來做到這一點。填充樹視圖控件

class TermNode 
{ 
    public string Name; 
    public string Definition; 
    public List<TermNode> Children 
}

來源

2008-11-24 Rahul

感謝所有我是越來越糊塗了，因爲我不知道，對於一個給定的樹節點TN，tn.Nodes.Add會返回添加樹節點一旦你知道該解決方案是直線前進，像這樣

private void /*TreeNode*/ RecursiveAdd(OntologyNode on, TreeNode tn) 
{ 
    if (on.Children.Count == 0) 
    { 
     return;    
    } 
    foreach (OntologyNode child in on.Children) 
    { 
     TreeNode tCur = tn.Nodes.Add(child.Name); 
     tCur.Tag = child;//optional for some selected node events 
     RecursiveAdd(child, tCur);    
    } 
}

，並開始遞歸調用

foreach(OntologyNode on in Nodes) 
{ 
    if (on.IsTopLevelNode == true)// internal not pertinent to this code snippet 
    { 
      TreeNode tn = tvOntoBrowser.Nodes.Add(on.Name); 
      tn.Tag = on; 
      if (on.Children.Count > 0) 
      { 
       RecursiveAdd(on, tn); 
      } 
    } 

    }

來源

2008-11-24 08:35:31 Rahul

這裏有一段代碼讓你開始遞歸。這不是測試（我現在不能），但你應該得到的想法：

public static void BuildTreeView(TreeNodeCollection Parent, List<TermNode> TermNodeList) 
{ 
    foreach (TermNode n in TermNodeList) 
    { 
    TreeNode CurrentNode = Parent.Add(n.Name); 
    // no need to recurse on empty list 
    if (n.List.Count > 0) BuildTreeView(CurrentNode.Nodes, n.List); 
    } 
} 

// initial call 
List<TermNode> AllTermNodes = /* all your nodes at root level */; 

BuildTreeView(treeView1.Nodes, AllTermNodes);

來源

2008-11-24 07:34:41 Tomalak

剛掏出仿製藥的旋..工作很好。值得一看...

public interface INode<T> 
{ 
    List<T> Children { get; } 
} 
class TermNode:INode<TermNode> 
{ 
    public string Name; 
    public string Definition; 
    public List<TermNode> Children { get; set; } 
    public TermNode() 
    { 
     this.Children = new List<TermNode>(); 
    } 
} 

public class TreeBuilder<T> where T : INode<T> 
{ 
    public Func<T, TreeNode> obCreateNodeFunc; 

    public void AddNode(TreeView obTreeView, T obNodeToAdd, TreeNode obParentNodeIfAny) 
    { 
     TreeNodeCollection obNodes; 
     if (obParentNodeIfAny == null) 
     { 
      obNodes = obTreeView.Nodes; 
     } 
     else 
     { 
      obNodes = obParentNodeIfAny.Nodes; 
     } 
     int iNewNodeIndex = obNodes.Add(obCreateNodeFunc(obNodeToAdd)); 
     TreeNode obNewNode = obNodes[iNewNodeIndex]; 

     foreach (T child in obNodeToAdd.Children) 
     { 
      AddNode(obTreeView, child, obNewNode); 
     } 
    } 
} 

// calling code - Some class 
    static TreeNode GetTreeNodeFor(TermNode t) 
    { 
     return new TreeNode(t.Name); // or any logic that returns corr TreeNode for T 
    } 

    void Main()... 
    { 
     TermNode[] arrNodesList;  
     // populate list with nodes 

     TreeBuilder<TermNode> tb = new TreeBuilder<TermNode>(); 
     tb.obCreateNodeFunc = GetTreeNodeFor; 
     foreach (TermNode obNode in arrNodesList) 
     { 
      tb.AddNode(treeView, obNode, null); 
     } 
    }

來源

2008-11-24 11:09:56 Gishu

填充樹視圖控件

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