public MainWindow()
{
InitializeComponent();
// number of children for each person (4 levels)
// item count is 1 + count + count^2 + count^3 + count^4
// (e.g. count = 10 => ~10,000 people)
int count = 10;
// build person tree
_person = new Person();
#region CreatingPersons
using (new Benchmark("Building person tree", _txtPerson))
{
for (int i = 0; i < count; i++)
{
var pi = new Person();
_person.Children.Add(pi);
for (int j = 0; j < count; j++)
{
var pj = new Person();
pi.Children.Add(pj);
for (int k = 0; k < count; k++)
{
var pk = new Person();
pj.Children.Add(pk);
for (int l = 0; l < count; l++)
{
var pl = new Person();
pk.Children.Add(pl);
}
}
}
}
}
#endregion
#region Populating
// put person in a list so we can bind to it
var list = new ObservableCollection<Person>();
list.Add(_person);
// show items in bound controls
using (new Benchmark("Bound TreeView", _txtTree))
{
_tree.ItemsSource = list;
}
using (new Benchmark("Bound FlexGrid", _txtFlex))
{
_flex.ItemsSource = list;
}
// show items in unbound controls
using (new Benchmark("Unbound TreeView", _txtTreeUnbound))
{
ShowPersonOnTree(_person, _treeUnbound);
}
using (new Benchmark("Unbound FlexGrid", _txtFlexUnbound))
{
ShowPersonOnGrid(_person, _flexUnbound);
}
#endregion
// try doing this with a TreeView ;-)
_flex.CollapseGroupsToLevel(5);
_flexUnbound.CollapseGroupsToLevel(5);
// hide row headers
_flex.HeadersVisibility = HeadersVisibility.Column;
_flexUnbound.HeadersVisibility = HeadersVisibility.Column;
}
private void _btnAddRoot_Click(object sender, RoutedEventArgs e)
{
var list = _flex.CollectionView.SourceCollection as ObservableCollection<Person>;
var root = new Person();
list.Insert(0, root);
}
void ShowPersonOnTree(Person p, TreeView t)
{
t.Items.Clear();
AddPersonToTree(p, t.Items);
}
// populate unbound FlexGrid
void ShowPersonOnGrid(Person p, C1FlexGrid flex)
{
// initialize grid
flex.Rows.Clear();
flex.Columns.Clear();
// add columns we want to show
var c = new Column();
c.Header = "Name";
c.Binding = new System.Windows.Data.Binding("Name");
c.Width = new GridLength(1, GridUnitType.Star);
flex.Columns.Add(c);
c = new Column();
c.Header = "Children";
c.Binding = new System.Windows.Data.Binding("Children.Count");
c.HorizontalAlignment = HorizontalAlignment.Right;
flex.Columns.Add(c);
using (flex.Rows.DeferNotifications())
{
AddPersonToGrid(p, flex, 0);
}
}
void AddPersonToTree(Person p, ItemCollection items)
{
// create an item for this person
var item = new TreeViewItem();
item.Tag = p;
item.Header = p.Name;
// add this person to the tree
items.Add(item);
// and add any children
foreach (var child in p.Children)
{
AddPersonToTree(child, item.Items);
}
}
void AddPersonToGrid(Person p, C1FlexGrid flex, int level)
{
// create a row for this person
Row row;
if (p.Children.Count > 0 || true)
{
var gr = new GroupRow();
gr.Level = level;
row = gr;
}
else
{
row = new Row();
}
row.DataItem = p;
// add this person to the grid
flex.Rows.Add(row);
// and add any children
foreach (var child in p.Children)
{
AddPersonToGrid(child, flex, level + 1);
}
}