Hi all,

Version: 10.3.20103.1000

A have a UltraTree bound to a BindingList<T>. If I remove the last item from the binding list to create an empty list, then the tree control throws the following exception.

Infragistics2.Win.UltraWinTree.v10.3.dll!Infragistics.Win.UltraWinTree.TreeNodesCollection.GetNodeFromListIndex(int listIndex = 0) + 0x23 bytes Infragistics2.Win.UltraWinTree.v10.3.dll!Infragistics.Win.UltraWinTree.TreeNodesCollection.dataList_ItemDeleted(System.ComponentModel.ListChangedEventArgs e) + 0x15 bytes Infragistics2.Win.UltraWinTree.v10.3.dll!Infragistics.Win.UltraWinTree.TreeNodesCollection.dataList_ListChanged(object sender, System.ComponentModel.ListChangedEventArgs e) + 0x2a bytes UltraTreeBinding.exe!UltraTreeBinding.Form1.Button1Click(object sender = {Text = "Remove Node"}, System.EventArgs e = {X = 49 Y = 8 Button = Left}) Line 58 + 0x12 bytes C#

If I replace the final Remove with a Clear(), then everything works fine. Can you take a look to see if this is a bug in the tree control?

Thanks

Steve

Sample code:

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

namespace UltraTreeBinding
{    
    public partial class Form1 : Form
    {
        private readonly BindingList dataSource = new BindingList();
        private Infragistics.Win.UltraWinTree.UltraTree ultraTree1;
        private Button button1;

        /// 
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 
        private void InitializeComponent()
        {
            ultraTree1 = new Infragistics.Win.UltraWinTree.UltraTree();
            button1 = new Button();
            ((ISupportInitialize)(ultraTree1)).BeginInit();
            SuspendLayout();
            
            // ultraTree1
            ultraTree1.Dock = DockStyle.Top;
            ultraTree1.Size = new Size(550, 350);
            ultraTree1.Name = "ultraTree1";
            
            // button1
            button1.Location = new Point(13, 370);
            button1.Size = new Size(75, 23);
            button1.Text = @"Remove Node";
            button1.Click += Button1Click;
            
            // Form1
            AutoScaleDimensions = new SizeF(6F, 13F);
            AutoScaleMode = AutoScaleMode.Font;
            ClientSize = new Size(551, 411);
            Controls.Add(button1);
            Controls.Add(ultraTree1);
            ((ISupportInitialize)(ultraTree1)).EndInit();
            ResumeLayout(false);
        }

        public Form1()
        {
            InitializeComponent();

            dataSource.Add("Node 1");
            dataSource.Add("Node 2");

            ultraTree1.DataSource = dataSource;
        }

        private void Button1Click(object sender, EventArgs e)
        {
            dataSource.RemoveAt(0);
        }
    }
}