Find and select a node in TreeView

[Mario]

Hello,
i make a RadTreeView so:

<telerik:RadTreeView ID="RadTreeView1" Runat="server" DataFieldID="playerID"
                  DataFieldParentID="parentID" DataSourceID="ObjectDataSource1"
                  DataTextField="playerName" DataValueField="Route"
                  onnodedatabound="RadTreeView1_NodeDataBound"
                    Width="100%" oncontextmenuitemclick="RadTreeView1_ContextMenuItemClick">

It works fine.
playerID - Primary key
parentID - for TreeView
playerName - String
Route - a value between 1 to 4 (1-Main, 2-Partial, ...)

Once a new record is inserted into the database, I get back the new playerID.

PlayerBLL players = new PlayerBLL();
        string text = SaveSQL.GetSaveSql(txtCreateMainRouteName.Text.Trim());

        if (Page.IsValid)
        {
            PlayerID = players.InsertRouteAndStation(text, 1, null);
            RadTreeView1.DataSourceID = "ObjectDataSource1";
            RadTreeView1.DataBind();
        }

How can i select the new Node in the TreeView with the new playerID?

Best regards
Reiner

[Bozhidar]

Hi Mario,

You cannot directly use the item ID, because it is not bound to any public property of the treeview. The DataFieldID is only used internaly to bind the TreeView and it's not available on the server.

To implement the search, you can use the NodeDataBound server event, where you can set a custom attribute of the node, holding the playerID value. Then you can just use the server method FindNodeByAttribute. Here's a small example:

protected void RadTreeView1_NodeDataBound(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
{
    e.Node.Attributes.Add("playerID", (e.Node.DataItem as DataRowView)["playerID"].ToString());
}

protected RadTreeNode FindNode(string id)
{
    return RadTreeView1.FindNodeByAttribute("playerID", id);
}

 
Greetings,
Bozhidar
the Telerik team