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treelist.CustomDrawNodeIndicator+= new CustomDrawNodeIndicatorEventHandler(treeList1_CustomDrawNodeIndicator);
private void treeList1_CustomDrawNodeIndicator(object sender, DevExpress.XtraTreeList.CustomDrawNodeIndicatorEventArgs e)
{
DevExpress.XtraTreeList.TreeList tmpTree = sender as DevExpress.XtraTreeList.TreeList;
DevExpress.Utils.Drawing.IndicatorObjectInfoArgs args = e.ObjectArgs as DevExpress.Utils.Drawing.IndicatorObjectInfoArgs;
if (args != null)
{
int rowNum = tmpTree.GetVisibleIndexByNode(e.Node) + 1;
tmpTree.IndicatorWidth = rowNum.ToString().Length * 10 + 10;//宽度跟随行数字大小改变
args.DisplayText = rowNum.ToString();
}
e.ImageIndex = -1;
}