TreeView在绑定数据时如何限制子节点下的子节点最多绑定的层数

Question

public void LoadFileType()
{
DataSet ds = new b2ccms_BLL.b2ccms_userMemberBLL().GetListZ("*", "u_id='" + M_Id + "'");
TreeNode tn = new TreeNode();
DataTable table = ds.Tables[0]; //查询第一节点数据
foreach (DataRow dr in table.Rows) //循环绑定节点并查询子节点
{
TreeNode tr = new TreeNode();
tn.Text = dr["u_name"].ToString();
tn.Value = dr["u_name"].ToString();
LoadChildNoed(dr["u_name"].ToString(), tn); //加载子节点
tn.ChildNodes.Add(tn);
}
tn.Expanded = true;
TreeView1.Nodes.Add(tn);
}
//加载子节点
public void LoadChildNoed(string Pid, TreeNode tr)
{
DataSet ds = new b2ccms_BLL.b2ccms_userMemberBLL().GetListZ("*", "u_referess='" + Pid + "'");
DataTable table = ds.Tables[0]; //查询子节点数据
foreach (DataRow dr in table.Rows) //循环绑定节点并查询子节点
{
TreeNode td = new TreeNode();
td.Value = dr["u_name"].ToString();
td.Text = dr["u_name"].ToString();
td.Expanded=false;
LoadChildNoed(dr["u_name"].ToString(), td); //递归绑定子节点
tr.ChildNodes.Add(td);
}
}
如何让子节点最多绑定到9层，9层之后的就不在显示了

Answer 1

public void LoadChildNoed(string Pid, TreeNode tr, int level)
{
if (level > 最大层数) return;
...
LoadChildNoed(dr["u_name"].ToString(), td, level + 1);
...
}

LoadChildNoed(dr["u_name"].ToString(), tn); //加载子节点
->
LoadChildNoed(dr["u_name"].ToString(), tn, 0); //加载子节点