RootLocation Property

using System;
using System.Drawing;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.Misc;
using Infragistics.Win.Misc.UltraWinNavigationBar;
using Infragistics.Win.UltraWinTree;

    public class FileSystemSupport
    {
        private static readonly string PATH_SEPARATOR = "\\";
        private UltraNavigationBar navigationBar = null;
        private UltraTree tree = null;

        public void Populate()
        {
            try
            {
                System.Windows.Forms.Cursor.Current = System.Windows.Forms.Cursors.WaitCursor;

                //  Set up the root location to represent the 'Computer' location.
                UltraNavigationBarLocation rootLocation = this.navigationBar.RootLocation;
                
                //  Remove any existing members from the root's Locations collection.
                if ( rootLocation.HasLocations )
                    rootLocation.Locations.Clear();

                //  Clear the tree's Nodes collection and add the root node.
                this.tree.Nodes.Clear();
                UltraTreeNode rootNode = this.tree.Nodes.Add( "Computer", "Computer" );

                //  Set the Text for the root location and root node
                rootLocation.Text = rootNode.Text;

                //  Note that we set the IncludeTextInFullPath property to false
                //  so that directory paths can be parsed without the end user
                //  having to type the name of the root. This will also prevent
                //  the text from appearing when the control is in edit mode.
                rootLocation.IncludeTextInFullPath = false;
                
                //  Add the logical drives of this local machine to the root's Locations/Nodes collections.
                NavigationBarLocationsCollection locations = rootLocation.Locations;
                TreeNodesCollection nodes = rootNode.Nodes;

                //  Assign the appropriate image to the root location/node
                rootLocation.Settings.Appearance.Image = this.GetImage(Images.Computer);
                rootNode.Override.NodeAppearance.Image = this.GetImage(Images.Computer);

                DriveInfo[] drives = DriveInfo.GetDrives();
                for ( int i = 0; i < drives.Length; i ++ )
                {
                    DriveInfo drive = drives[i];
                    
                    //  Skip the drives we don't want to present to the end user.
                    if ( drive.DriveType == DriveType.Ram ||
                         drive.DriveType == DriveType.NoRootDirectory ||
                         drive.IsReady == false )
                        continue;

                    //  Get the name of the drive, and remove the path separator.
                    //  Also, get the volume name and use 'Local Disk' if none is assigned.
                    string driveName = drive.Name;
                    driveName = driveName.Replace( PATH_SEPARATOR, string.Empty );
                    string volumeLabel = drive.VolumeLabel;
                    volumeLabel = volumeLabel != null && volumeLabel.Length > 0 ? volumeLabel : "Local Disk";

                    //  Create a new UltraNavigationBarLocation instance, using the drive's name
                    //  as the key, and the volume label/drive name as the DisplayText.
                    UltraNavigationBarLocation location = new UltraNavigationBarLocation( driveName, driveName );

                    //  Use the DisplayText property to format the combination of the drive letter
                    //  and volume name so that we present it to the end user in a readable form.
                    location.DisplayText = string.Format("{0} ({1})", volumeLabel, driveName );

                    //  Add the location to the root's Locations collection.
                    locations.Add( location );

                    //  Add an accompanying tree node for the location we just added
                    UltraTreeNode node = rootNode.Nodes.Add( location.Key, location.DisplayTextResolved );

                    //  Assign the appropriate image to the location/node
                    location.Settings.Appearance.Image = this.GetImage(drive.DriveType);
                    node.Override.NodeAppearance.Image = this.GetImage(drive.DriveType);

                    //  Assign an instance of a wrapper class which associates the node,
                    //  location and directory to each object to the Tag property.
                    node.Tag = new DirectoryWrapper( drive.RootDirectory, location );
                    location.Tag = new DirectoryWrapper( drive.RootDirectory, node );
                }
            }
            finally
            {
                System.Windows.Forms.Cursor.Current = System.Windows.Forms.Cursors.Default;
            }
        }
    }