public void InitComplete(object sender, System.EventArgs e)
{
webPartManager = WebPartManager.GetCurrentWebPartManager(Page);

String browseModeName = WebPartManager.BrowseDisplayMode.Name;

foreach (WebPartDisplayMode mode in
webPartManager.SupportedDisplayModes)
{
String modeName = mode.Name;
if (mode.IsEnabled(webPartManager))
{
ListItem listItem = new ListItem(modeName, modeName);
ddlDisplayMode.Items.Add(listItem);
}
}
}