http://blog.csdn.net/fwj380891124/article/details/6888077

treeList1.LookAndFeel.UseWindowsXPTheme = true;    //使用XP主题
  treeList1.LookAndFeel.UseDefaultLookAndFeel = false;

treeList1.OptionsView.ShowColumns = false;       //隐藏列名

treeList1.OptionsView.ShowColumns = false;       //显示展开按钮

treelist1.OptionView.ShowIndicator = false;    //隐藏最前面的行指示列

treeList1.Appearance.FocusedCell.BackColor = Color.LightSteelBlue;    //焦点行颜色渐变
  treeList1.Appearance.FocusedCell.BackColor2 = Color.SteelBlue;

treeList1.OptionsView.ShowHorzLines = false;     //隐藏行列边框
  treeList1.OptionsView.ShowVertLines = false;

treeList1.OptionsView.FocusRectStyle = DevExpress.XtraTreeList.DrawFocusRectStyle.None;  //隐藏焦点行边框

var node = treeList1.FocusedNode;

node["Name"] = "新名";

var node = treeList1.FocusedNode;

treeList1.DeleteNode(node);