Tree

//建树的基本思路是：从根节点开始递归调用显示子树
private void InitTree(TreeNodeCollection Nds,string parentId)
{
DataView dv=new DataView();
TreeNode tmpNd;
string intId;
dv.Table=ds.Tables["tree"];
dv.RowFilter="ParentId="" + parentId + """ ;
foreach(DataRowView drv in dv)
{
tmpNd=new TreeNode();
tmpNd.ID=drv["NodeId"].ToString();
tmpNd.Text=drv["NodeName"].ToString();
tmpNd.ImageUrl="../images/"+drv["Icon"].ToString();
tmpNd.NavigateUrl="../"+drv["Address"].ToString();
Nds.Add(tmpNd);
intId=drv["ParentId"].ToString();
InitTree(tmpNd.Nodes,tmpNd.ID);
}
}