Tree View

[jakki]

Is it possible to show the Treeview in a list box

[harshadd]

A list box can have multiple coloumns But yiu ca not use it as a tree, why you want a list box when tree is available? Both are designed for diff purpose...

rgds
Harshad Dandekar

[jakki]

Tank you.. for your reply..

[jakki]

i want to populate a data from a data base..

i wrote a code for webapplication aspx.cs.. which is perfectly work's
code is

protected void Page_Load(objec t sender, EventArgs e)
{
if (!Page.IsPostBa ck)
{
PopulateRootLev el();
}
}
//select ParentId, GroupName,(sele ct count(*) FROM tree WHERE SubGroup=sc.Par entId) SubGroup,SubGro up FROM tree sc where ParentId=@paren tID
private void PopulateRootLev el()
{
SqlConnection objConn = new SqlConnection(" Data Source=CDTECHPR O2\\SQLEXPRESS; Initial Catalog=Image;I ntegrated Security=True") ;
SqlCommand objCommand = new SqlCommand("sel ect ParentId,GroupN ame,(select count(*) FROM tree WHERE SubGroup=sc.Par entId) childnodecount FROM tree sc where SubGroup IS NULL", objConn);
SqlDataAdapter da = new SqlDataAdapter( objCommand);
DataTable dt = new DataTable();
da.Fill(dt);
PopulateNodes(d t, TreeView1.Nodes );
}

private void PopulateNodes(D ataTable dt, TreeNodeCollect ion nodes)
{
foreach (DataRow dr in dt.Rows)
{
TreeNode tn = new TreeNode();
tn.Text = dr["GroupName"].ToString();
tn.Value = dr["ParentId"].ToString();
nodes.Add(tn);
//If node has child nodes, then enable on-demand populating
tn.PopulateOnDe mand = ((int)dr["childnodecount "] > 0);
}
}

private void PopulateSubLeve l(int parentid, TreeNode parentNode)
{
SqlConnection objConn = new SqlConnection(" Data Source=CDTECHPR O2\\SQLEXPRESS; Initial Catalog=Image;I ntegrated Security=True") ;
SqlCommand objCommand = new SqlCommand("sel ect ParentId,GroupN ame,(select count(*) FROM tree " + "WHERE SubGroup=sc.Par entId) childnodecount FROM tree sc where SubGroup=@SubGr oup", objConn);
objCommand.Para meters.Add("@Su bGroup", SqlDbType.Int). Value = parentid;
SqlDataAdapter da = new SqlDataAdapter( objCommand);
DataTable dt = new DataTable();
da.Fill(dt);
PopulateNodes(d t, parentNode.Chil dNodes);
}

protected void TreeView1_TreeN odePopulate(obj ect sender, TreeNodeEventAr gs e)
{
int s = int.Parse(e.Nod e.Value);
PopulateSubLeve l(s, e.Node);
}




but it should not work in C# windows application...


PopulateOnDeman d insted of what method what method i am going to use to dinamically populate a data... and this event is also not alaliable..

protected void TreeView1_TreeN odePopulate(obj ect sender, TreeNodeEventAr gs e)