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);
}
}