Доброго времени суток, вопрос таков: как сделать так что если нет одной ветки выпадалась следующая
void PopulateNode(Object sender, TreeNodeEventArgs e)
{
switch (e.Node.Depth)
{
case 0:
PopulateInstitute(e.Node);
break;
case 1:
PopulateFacultets(e.Node);
PopulateDiscipline(e.Node);
break;
case 2:
PopulateDiscipline(e.Node);
break;
default:
break;
}
}
void PopulateInstitute(TreeNode node)
{
DataSet ResultSet = RunQuery("SELECT kod, name FROM division_list WHERE not name is null order by name");
if (ResultSet.Tables.Count > 0)
{
foreach (DataRow row in ResultSet.Tables[0].Rows)
{
TreeNode newNode = new TreeNode();
newNode.Text = row["Name"].ToString();
newNode.Value = row["kod"].ToString();
newNode.PopulateOnDemand = true;
newNode.SelectAction = TreeNodeSelectAction.None;
newNode.Collapse();
}
}
}
void PopulateFacultets(TreeNode node)
{
DataSet ResultSet = RunQuery("SELECT name, kod FROM subdivision_list WHERE division_kod= " + node.Value);
if (ResultSet.Tables.Count > 0)
{
// Iterate through and create a new node for each row in the query results.
// Notice that the query results are stored in the table of the DataSet.
foreach (DataRow row in ResultSet.Tables[0].Rows)
{
}
}
}
public string d; public string NA; public string Fac; public string Inst;
void PopulateDiscipline(TreeNode node)
{
if (ResultSet.Tables.Count > 0)
{
foreach (DataRow row in ResultSet.Tables[0].Rows)
{
TreeNode NewNode = new TreeNode(row["Name"].ToString());
NA = row["Name"].ToString();
d = NewNode.Value;
Fac = node.Value;
Inst = row["division"].ToString();
string url;
url = "webform1.aspx?Name=" + NA + "&ID=" + d + "&Fac=" + Fac + "&Ins=" + Inst;
NewNode.NavigateUrl = (url);
}
}
}