public static void SetDataSource(this TreeView tvw, string RootName, Object DataSource, string ValueMember, string DisplayMember, object NodeToSelect = null, Control[] ControlsToClear = null)
{
tvw.BeginUpdate();
tvw.ClearDataSource(ControlsToClear);

TreeNode root = new TreeNode(RootName) { Name = “Root” };
tvw.Nodes.Add(root);

CurrencyManager currencyManager = (CurrencyManager)tvw.BindingContext[DataSource];
if (currencyManager.Count > 0)
{
IList innerList = currencyManager.List;

PropertyDescriptor pdDisplay = currencyManager.GetItemProperties()[DisplayMember];
if (pdDisplay == null) { MsgBox.Error(“Invalid Display Member: ” + DisplayMember, “Unable to set Datasource”); return; }

PropertyDescriptor pdValue = currencyManager.GetItemProperties()[ValueMember];
if (pdDisplay == null) { MsgBox.Error(“Invalid Value Member: ” + ValueMember, “Unable to set Datasource”); return; }

foreach (object record in innerList)
{
string Text = pdDisplay.GetValue(record).ReturnEmptyIfNull();
string Value = pdValue.GetValue(record).ReturnEmptyIfNull();

TreeNode childNode = new TreeNode(Text) { Name = tvw.setName(Value), Tag = record };
root.Nodes.Add(childNode);
}
}
tvw.EndUpdate();
tvw.Format();

if (NodeToSelect != null) { tvw.SelectNode(NodeToSelect.ToString()); tvw.Focus(); }

}

It’s look very great :D
Could we select multiple nodes at once?

1) add a node enabled property.
2) allow for nodes with or without check boxes.
3) allow for nodes without images to not draw empty space.
4) are tri-state check-boxes useful?

I override all the node drawing so I have to draw the plus/minus image and also the lines myself at the correct indentation.

Hitesh:

I will be adding the checkbox drawing with the ability to override the images shown.

Marco Pozzati:

I hope to add the ability to have a second string drawn in a different text/font etc.

How does it look with 2007 themes ? I think it is the most difficult theme to apply to the treeview
It is really nice to see you were able to change the – + icons of the treeview. I’m curious how do you have achieved this !

Finally are we still able to custom draw the nodes ?