如何在C＃的WinForms应用程序一个多树视图这样吗？ [英] How to create a MultiColumn treeview like this in C# Winforms app?

问题描述

 父COL1 col2的COL3 
 | 
 | ____儿童数据1数据2数据3 
 | 
 | ____ CHILD2数据1数据2数据3 
  

解决方案

使用 ObjectListView 库，是非常强大的，很容易使用。

下面是一个完整的例子：

1）编译ObjectListView源代码，以获得 ObjectListView.dll 结果
2）创建一个新的Windows窗体应用程序，并添加 ObjectListView.dll 作为参考结果
3）打开Form1.cs的代码和内部复制下面的代码：

 公共部分Form1类：表格
 {
 //嵌入类
类节点
 {
公共字符串名称{;私人集; } 
公共字符串列1 {搞定;私人集; } 
公共字符串列2 {搞定;私人集; } 
公共字符串栏3 {搞定;私人集; } 
公开名单<节点>儿童{搞定;私人集; } 
公共节点（字符串名称，字符串COL1，COL2字符串，字符串COL3）
 {
 this.Name =名称; 
 this.Column1 = COL1; 
 this.Column2 = COL2; 
 this.Column3 = COL3; 
 this.Children =新的List<节点>（）; 
} 
} 
 
 //私有字段
私有列表<节点>数据; 
私人BrightIdeasSoftware.TreeListView treeListView; 
 
 //构造
公共Form1中（）
 {
的InitializeComponent（）; 
 AddTree（）; 
 InitializeData（）; 
 FillTree（）; 
} 
 
 //私有方法
私人无效FillTree（）
 {
 //设置树使用要知道如果一个节点是委托扩展
 this.treeListView.CanExpandGetter = X => （X为节点）.Children.Count> 0; 
 //设置树使用要知道一个节点
 this.treeListView.ChildrenGetter = X =>中孩子委托; （X为节点）。儿童; 
 
 //创建树列，并设置委托给打印所需的对象proerty 
变种nameCol =新BrightIdeasSoftware.OLVColumn（姓名，姓名）; 
 nameCol.AspectGetter = X => （X为节点）.Name点; 
 
变种COL1 =新BrightIdeasSoftware.OLVColumn（列1，列1）; 
 col1.AspectGetter = X => （X为节点）.Column1; 
 
变种COL2 =新BrightIdeasSoftware.OLVColumn（列2，列2）; 
 col2.AspectGetter = X => （X为节点）.Column2; 
 
变种COL3 =新BrightIdeasSoftware.OLVColumn（栏3，栏3）; 
 col3.AspectGetter = X => （X为节点）.Column3; 
 
 //添加列到树
 this.treeListView.Columns.Add（nameCol）; 
 this.treeListView.Columns.Add（COL1）; 
 this.treeListView.Columns.Add（COL2）; 
 this.treeListView.Columns.Add（COL3）; 
 
 //设置树根
 this.treeListView.Roots =数据; 
} 
 
私人无效InitializeData（）
 {
 //创建假的节点
变种parent1 =新节点（PARENT1， - ，  - ， - ）; 
 parent1.Children.Add（新节点（CHILD_1_1，A，X，1））; 
 parent1.Children.Add（新节点（CHILD_1_2，A，Y，2））; 
 parent1.Children.Add（新节点（CHILD_1_3，A，Z，3））; 
 
变种parent2 =新节点（PARENT2， - ， - ， - ）; 
 parent2.Children.Add（新节点（CHILD_2_1，B，W，7））; 
 parent2.Children.Add（新节点（CHILD_2_2，B，Z，8））; 
 parent2.Children.Add（新节点（CHILD_2_3，B，J，9））; 
 
变种parent3 =新节点（PARENT3， - ， - ， - ）; 
 parent3.Children.Add（新节点（CHILD_3_1，C，R，10））; 
 parent3.Children.Add（新节点（CHILD_3_2，C，T，12））; 
 parent3.Children.Add（新节点（CHILD_3_3，C，H，14））; 
 
数据=新的List<节点> {parent1，parent2，parent3}; 
} 
 
私人无效AddTree（）
 {
 treeListView =新BrightIdeasSoftware.TreeListView（）; 
 treeListView.Dock = DockStyle.Fill; 
 this.Controls.Add（treeListView）; 
} 
} 
  

结果：

Parent         Col1    Col2    Col3  
|
|____ Child    Data1   Data2  Data3
|
|____ Child2   Data1    Data2  Data3

解决方案

Use the ObjectListView library, is very powerful and pretty easy to use.

Here's a full example:

1) compile the ObjectListView source code to get a ObjectListView.dll
2) create a new Windows Forms Application and add the ObjectListView.dll as reference
3) Open the Form1.cs code and copy the following code inside:

public partial class Form1 : Form
{
    // embedded class
    class Node
    {
        public string Name { get; private set; }
        public string Column1 { get; private set; }
        public string Column2 { get; private set; }
        public string Column3 { get; private set; }
        public List<Node> Children { get; private set; }
        public Node(string name, string col1, string col2, string col3)
        {
            this.Name = name;
            this.Column1 = col1;
            this.Column2 = col2;
            this.Column3 = col3;
            this.Children = new List<Node>();
        }
    }

    // private fields
    private List<Node> data;
    private BrightIdeasSoftware.TreeListView treeListView;

    // constructor
    public Form1()
    {
        InitializeComponent();
        AddTree();
        InitializeData();
        FillTree();
    }

    // private methods
    private void FillTree()
    {
        // set the delegate that the tree uses to know if a node is expandable
        this.treeListView.CanExpandGetter = x => (x as Node).Children.Count > 0;
        // set the delegate that the tree uses to know the children of a node
        this.treeListView.ChildrenGetter = x => (x as Node).Children;

        // create the tree columns and set the delegates to print the desired object proerty
        var nameCol = new BrightIdeasSoftware.OLVColumn("Name", "Name");
        nameCol.AspectGetter = x => (x as Node).Name;

        var col1 = new BrightIdeasSoftware.OLVColumn("Column1", "Column1");
        col1.AspectGetter = x => (x as Node).Column1;

        var col2 = new BrightIdeasSoftware.OLVColumn("Column2", "Column2");
        col2.AspectGetter = x => (x as Node).Column2;

        var col3 = new BrightIdeasSoftware.OLVColumn("Column3", "Column3");
        col3.AspectGetter = x => (x as Node).Column3;

        // add the columns to the tree
        this.treeListView.Columns.Add(nameCol);
        this.treeListView.Columns.Add(col1);
        this.treeListView.Columns.Add(col2);
        this.treeListView.Columns.Add(col3);

        // set the tree roots
        this.treeListView.Roots = data;
    }

    private void InitializeData()
    {
        // create fake nodes
        var parent1 = new Node("PARENT1", "-", "-", "-");
        parent1.Children.Add(new Node("CHILD_1_1", "A", "X", "1"));
        parent1.Children.Add(new Node("CHILD_1_2", "A", "Y", "2"));
        parent1.Children.Add(new Node("CHILD_1_3", "A", "Z", "3"));

        var parent2 = new Node("PARENT2", "-", "-", "-");
        parent2.Children.Add(new Node("CHILD_2_1", "B", "W", "7"));
        parent2.Children.Add(new Node("CHILD_2_2", "B", "Z", "8"));
        parent2.Children.Add(new Node("CHILD_2_3", "B", "J", "9"));

        var parent3 = new Node("PARENT3", "-", "-", "-");
        parent3.Children.Add(new Node("CHILD_3_1", "C", "R", "10"));
        parent3.Children.Add(new Node("CHILD_3_2", "C", "T", "12"));
        parent3.Children.Add(new Node("CHILD_3_3", "C", "H", "14"));

        data = new List<Node> { parent1, parent2, parent3 };
    }

    private void AddTree()
    {
        treeListView = new BrightIdeasSoftware.TreeListView();
        treeListView.Dock = DockStyle.Fill;
        this.Controls.Add(treeListView);
    }
}

Result:

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