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:
