Beispiel #1
0
        private void treeList1_VirtualTreeGetChildNodes(object sender, DevExpress.XtraTreeList.VirtualTreeGetChildNodesInfo e)
        {
            Cursor current = Cursor.Current;

            Cursor.Current = Cursors.WaitCursor;
            if (!loadDrives)
            {
                string[] roots = Directory.GetLogicalDrives();
                e.Children = roots;
                loadDrives = true;
            }
            else
            {
                try
                {
                    var path = (string)e.Node;
                    if (Directory.Exists(path))
                    {
                        var dirs  = Directory.GetDirectories(path);
                        var files = Directory.GetFiles(path);
                        var arr   = new string[dirs.Length + files.Length];
                        dirs.CopyTo(arr, 0);
                        files.CopyTo(arr, dirs.Length);
                        e.Children = arr;
                    }
                    else
                    {
                        e.Children = new object[] { }
                    };
                }
                catch { e.Children = new object[] { }; }
            }
            Cursor.Current = current;
        }
        private void treeList1_VirtualTreeGetChildNodes(object sender, DevExpress.XtraTreeList.VirtualTreeGetChildNodesInfo e)
        {
            String sCurrentNode = e.Node as String;

            if (sCurrentNode == null)
            {
                e.Children = new string[] { "Root node 1",
                                            "Root node 2",
                                            "Root node 3" };
            }
            else
            {
                e.Children = CreateChildrenNodes(sCurrentNode);
            }
        }