private TreeNode CreateGroupNode(MgLayerGroup group) { var node = new TreeNode(); node.Name = group.GetObjectId(); node.Text = group.GetLegendLabel(); node.Checked = group.IsVisible(); node.SelectedImageKey = node.ImageKey = IMG_GROUP; var meta = new GroupNodeMetadata(group); node.Tag = meta; _groups[group.GetObjectId()] = meta; //node.ContextMenuStrip = _legend.GroupContextMenu; return node; }