treeview控件，知道node的value和text，怎么获取id
public void grandsonnode(TreeNode childnode, string tt)
  {
  DataTable dt = bindtr().Tables[0];
  DataRow[] rows = dt.Select("moduleid='" + childnode.Parent.Value + "' and childid ='" + childnode.Value + "'");

  foreach (DataRow row in rows)
  {
  TreeNode node = new TreeNode();
  node.Text = row["OperateName"].ToString();//假设node.text=修改
  node.Value = row["OperateCode"].ToString();//假设node.value=111
  node.Expanded = false;
  childnode.ChildNodes.Add(node);
  Checked(childnode, node.Parent.Value,node .Value );
  }
  }

  public bool Checked(TreeNode tn, string sheettypeid,string operatecode) 
  {
  bool aaa = false;
  DataTable dt = operatorright().Tables[0];
  DataRow[] rows = dt.Select("sheettypeid='" + sheettypeid + "' and operatecode ='" + operatecode + "'");
  if (rows.Length > 0)
  {

  tn.ChildNodes[k].Checked = true; //k怎么定位到node.value=111的id，并将checked设置为true？
  tn.Checked = true;
  tn.Parent.Checked = true;
  }

请问 tn.ChildNodes[k].Checked = true; //k怎么定位到node.value=111的id，并将checked设置为true？


------解决方案--------------------
合并一下，类型于这个样子，可能dt2.Select("sheettypeid='" + sheettypeid + "' and operatecode ='" + operatecode + "'");里的sheettypeid 需要改一下

public void grandsonnode(TreeNode childnode, string tt)
{
DataTable dt = bindtr().Tables[0];
DataRow[] rows = dt.Select("moduleid='" + childnode.Parent.Value + "' and childid ='" + childnode.Value + "'");

foreach (DataRow row in rows)
{
TreeNode node = new TreeNode();
node.Text = row["OperateName"].ToString();//假设node.text=修改
node.Value = row["OperateCode"].ToString();//假设node.value=111
node.Expanded = false;
childnode.ChildNodes.Add(node);


DataTable dt2 = operatorright().Tables[0];
DataRow[] rows2 = dt2.Select("sheettypeid='" + sheettypeid + "' and operatecode ='" + operatecode + "'");
if (rows2.Length > 0)
{

node.Checked = true; //k怎么定位到node.value=111的id，并将checked设置为true？
tn.Checked = true;
tn.Parent.Checked = true;

}
}
------解决方案--------------------

探讨

合并一下，类型于这个样子，可能dt2.Select("sheettypeid='" + sheettypeid + "' and