c# - 如何使用winforms在多列模式下将项目添加到TreeViewAdv

Question

我正在玩这个名为 TreeViewAdv 的控件.我已经添加了控件并添加了几列，试图查看它是如何工作的。但直到现在，当我将项目添加到控件时，我得到的只是空节点。控件提供的示例根本不清楚，当我试图弄清楚数据是如何添加到它时，它让我很头疼。无论如何，这是我到目前为止所做的，我希望有人能指导我走向正确的方向。

    TreeModel _model = new TreeModel();
    treeViewAdv1.Model = _model;

    treeViewAdv1.BeginUpdate();
    for (int i = 0; i < 20; i++)
    {

        Node parentNode = new Node("root" + i);
        _model.Nodes.Add(parentNode);

        for (int n = 0; n < 2; n++)
        {
            Node childNode = new MyNode("child" + n);
            parentNode.Nodes.Add(childNode); 
        }

    }

    treeViewAdv1.EndUpdate();

无论如何，我得到的只是空节点，我真的不知道如何将数据添加到其他列...任何帮助将不胜感激...

Answer 1

显然这个问题很老了，但我找不到这个问题的任何答案，所以我想我会尽量避免一些人在未来遇到挫折。

要显示多个列，首先将 UseColumns 属性更改为 true。
然后将所需的列添加到 Columns 集合属性。
接下来使用 NodeControls 集合属性创建将显示的数据类型列表，以及它们的格式(复选框、文本框等)。确保设置 1) DataPropertyName(稍后会用到)，2) ParentColumn(显示 treeView 中的哪一列应该显示数据。最后，新建一个继承自Node类的类，并为每个NodeControl添加一个同名的公共(public)属性。然后在添加节点时，使用具有正确值的新类。

 private class ColumnNode: Node
        {
            public string NodeControl1="";  // This sould make the DataPropertyName specified in the Node Collection.
            public string NodeControl2 = "";
            public string NodeControl3 = "";
            public ColumnNode(string nodeControl1, string nodeControl2, int nodeControl3)
            {
                NodeControl1 = nodeControl1;
                NodeControl2 = nodeControl2;
                NodeControl3 = nodeControl3.ToString();
            }
        }

然后当添加 TreeModel _model = new TreeModel();

_treeViewAdv.Model = _model;
_treeViewAdv.BeginUpdate();
for (int i = 0; i < 20; i++)
{

    Node parentNode = new ColumnNode("root" + i, "",0);
    _model.Nodes.Add(parentNode);

    for (int n = 0; n < 2; n++)
    {
        Node childNode = new ColumnNode("child" + n,"Further Information",1);
        parentNode.Nodes.Add(childNode); 
    }

}
_treeViewAdv.EndUpdate();

作为引用，本例中 treeViewAdv 的设计器代码如下所示:

private Aga.Controls.Tree.TreeViewAdv _treeViewAdv;
private Aga.Controls.Tree.TreeColumn Column1;
private Aga.Controls.Tree.TreeColumn Column2;
private Aga.Controls.Tree.TreeColumn Column3;
private Aga.Controls.Tree.NodeControls.NodeTextBox NodeControl1;
private Aga.Controls.Tree.NodeControls.NodeTextBox NodeControl2;
private Aga.Controls.Tree.NodeControls.NodeTextBox NodeControl3;

private InitializeComponent()
{     
    // Left out all other initialization, since this was long enough already.
    this.treeViewAdvPrint = new Aga.Controls.Tree.TreeViewAdv();
    this.Column1 = new Aga.Controls.Tree.TreeColumn();
    this.Column2 = new Aga.Controls.Tree.TreeColumn();
    this.Column3 = new Aga.Controls.Tree.TreeColumn();
    this.NodeControl1 = new Aga.Controls.Tree.NodeControls.NodeTextBox();
    this.NodeControl2 = new Aga.Controls.Tree.NodeControls.NodeTextBox();
    this.NodeControl3= new Aga.Controls.Tree.NodeControls.NodeTextBox();

    // 
    // _treeViewAdv
    // 
    this._treeViewAdv.BackColor = System.Drawing.SystemColors.Window;
    this._treeViewAdv.Columns.Add(this.Column1);
    this._treeViewAdv.Columns.Add(this.Column2);
    this._treeViewAdv.Columns.Add(this.Column3);
    this._treeViewAdv.DefaultToolTipProvider = null;
    this._treeViewAdv.DragDropMarkColor = System.Drawing.Color.Black;
    this._treeViewAdv.GridLineStyle = ((Aga.Controls.Tree.GridLineStyle)((Aga.Controls.Tree.GridLineStyle.Horizontal | Aga.Controls.Tree.GridLineStyle.Vertical)));
    this._treeViewAdv.LineColor = System.Drawing.SystemColors.ControlDark;
    this._treeViewAdv.Location = new System.Drawing.Point(12, 12);
    this._treeViewAdv.Model = null;
    this._treeViewAdv.Name = "_treeViewAdv";
    this._treeViewAdv.NodeControls.Add(NodeControl1);
    this._treeViewAdv.NodeControls.Add(NodeControl2);
    this._treeViewAdv.NodeControls.Add(NodeControl3);
    this._treeViewAdv.SelectedNode = null;
    this._treeViewAdv.Size = new System.Drawing.Size(443, 356);
    this._treeViewAdv.TabIndex = 6;
    this._treeViewAdv.Text = "_treeViewAdv";
    this._treeViewAdv.UseColumns = true;

    // 
    // Column1
    // 
    this.Column1.Header = "Column 1";
    this.Column1.SortOrder = System.Windows.Forms.SortOrder.None;
    this.Column1.TooltipText = null;
    this.Column1.Width = 290;
    // 
    // Column3
    // 
    this.Column3.Header = "Column 3";
    this.Column3.SortOrder = System.Windows.Forms.SortOrder.None;
    this.Column3.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
    this.Column3.TooltipText = null;
    // 
    // Column2
    // 
    this.Column2.Header = "Column 2";
    this.Column2.SortOrder = System.Windows.Forms.SortOrder.None;
    this.Column2.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
    this.Column2.TooltipText = null;
    this.Column2.Width = 91;
    // 
    // NodeControl1
    // 
    this.NodeControl1.DataPropertyName = "NodeControl1";
    this.NodeControl1.IncrementalSearchEnabled = true;
    this.NodeControl1.LeftMargin = 3;
    this.NodeControl1.ParentColumn = this.Column1;
    // 
    // NodeControl2
    // 
    this.NodeControl2.DataPropertyName = "NodeControl2";
    this.NodeControl2.IncrementalSearchEnabled = true;
    this.NodeControl2.LeftMargin = 3;
    this.NodeControl2.ParentColumn = this.Column2;
    // 
    // NodeControl3
    // 
    this.NodeControl3.DataPropertyName = "NodeControl3";
    this.NodeControl3.IncrementalSearchEnabled = true;
    this.NodeControl3.LeftMargin = 3;
    this.NodeControl3.ParentColumn = this.Column3;
}