Hai

 In my web from I have 1 Treeview control , two buttons(Add, Delete) and one label. I have binded data from database to treeview control. Now If I select any node , then I'm displaying that node using label control. Now I have to Add and Delete nodes to the treeview control using Add and Delete Buttons.

 Anyone help me

How to solve this..

Thanks in Advance..     
 

 Take a look at http://aspnet.4guysfromrolla.com/articles/083006-1.aspx. It has a sample

Hi, 

sureshkumar.veesam:

Now If I select any node , then I'm displaying that node using label control. Now I have to Add and Delete nodes to the treeview control using Add and Delete Buttons.

1. If you want to display the selectednode in the label control, you can write some in the SelectedNodeChanged event, like below:

protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
    {
        this.lbl.Text = this.TreeView1.SelectedNode.Text;
    }

2. If you want to add the node, you can do like below:

 protected void Button1_Click(object sender, EventArgs e)
    {
        TreeNode tn = new TreeNode("New Node", "New", "defaut.aspx");
        //this.TreeView1.Nodes.Add(tn);// add the node at the rootnode

        //add the node in some treenode.===========
        TreeNode parentNode = (TreeNode)this.TreeView1.FindNode("Home");
        parentNode.ChildNodes.Add(tn);

====================================

    }

3. If you want to deleted the nodes, you can use the remove method, like below:

protected void Button1_Click(object sender, EventArgs e)
    {
               TreeNode tn = (TreeNode)this.TreeView1.FindNode("Home");
        this.TreeView1.Nodes.Remove(tn);

    }

Hope it helps.

 Hai Mr. Amanda

Thanks for your reply

Once try this code please...

protected void Page_Load(object sender, EventArgs e)
    {

        fill_Tree();
    }
    public void fill_Tree()
    {
        SqlConnection con = new SqlConnection("Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=Treeview;Data Source=SYS2");
        con.Open();
        SqlCommand SqlCmd = new SqlCommand("Select * from Parent", con);
        SqlDataReader Sdr = SqlCmd.ExecuteReader();
        SqlCmd.Dispose();
        string[,] ParentNode = new string[100, 2];
        int count = 0;
        while (Sdr.Read())
        {
            ParentNode[count, 0] = Sdr.GetValue(Sdr.GetOrdinal("ParentID")).ToString();
            ParentNode[count++, 1] = Sdr.GetValue(Sdr.GetOrdinal("ParentName")).ToString();
        }
       
        Sdr.Close();
        for (int loop = 0; loop < count; loop++)
        {
            TreeNode root = new TreeNode();
            root.Text = ParentNode[loop, 1];
            root.Target = "_blank";
            root.NavigateUrl = "TreeView.aspx";
            SqlCommand Module_SqlCmd = new SqlCommand("Select * from Child where ParentId =" + ParentNode[loop, 0], con);
            SqlDataReader Module_Sdr = Module_SqlCmd.ExecuteReader();
            while (Module_Sdr.Read())
            {
                TreeNode child = new TreeNode();
                child.Text = Module_Sdr.GetValue(Module_Sdr.GetOrdinal("ChildName")).ToString();
                // child.Target = "_blank";
                // child.NavigateUrl = "your_page_Url.aspx";
                root.ChildNodes.Add(child);
            }
            Module_Sdr.Close();
            TreeView1.Nodes.Add(root);
          //  lblMsg.Text = TreeView1.SelectedValue;
        }
        TreeView1.CollapseAll();
        con.Close();
        
    }
    protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
    {
        this.lblMsg.Text = this.TreeView1.SelectedNode.Text;
    }

 Tables

Parent

ParentId      ParentName

1                Names
2                Id

Child

ParentId      ChildName

1                 Sachin
1                 Sourav
1                 Rahul
2                  101
2                  102
2                  103

When I'm selecting a node, The Treeview is again gets binding...Try this .....     

 Hi,

You should adjust the Ispostback in the load event<

like below:

protected void Page_Load(object sender, EventArgs e)
    {

if(!IsPostback)

{

        fill_Tree();

}
    }

So it will not bind the treeview when you select  a node.

Hope it helps.