After populating a tree control using an on-demand method and clicking a submit button, the Nodes and CheckedNodes collections are empty. I am not re-populating the tree control in Page_Load if it is a postback. A similar post mentioned putting the tree control setup in Page_Init, but I'm assuming the control doesn't yet exist in Page_Init because no data appears when I use this approach.
Basically, in Page_Load() I have some code that reads:
if (IsPostBack)
{
System.Collections.Generic.IList<RadTreeNode> nodes = TreeView1.CheckedNodes;
foreach (RadTreeNode node in nodes)
...
}
The CheckedNodes collection is always empty. What am I doing wrong?
Basically, in Page_Load() I have some code that reads:
if (IsPostBack)
{
System.Collections.Generic.IList<RadTreeNode> nodes = TreeView1.CheckedNodes;
foreach (RadTreeNode node in nodes)
...
}
The CheckedNodes collection is always empty. What am I doing wrong?
1 Answer, 1 is accepted
0
Hi Kevin,
I tried to reproduce the described behavior but everything worked normally. Generally, Nodes added via Load-On-Demand are persisted on the server and they are available later after postback.
Can you provide more information about your TreeView definition and any code that might be interfering with the control's behavior?
Best wishes,
Simon
the Telerik team
Check out Telerik Trainer, the state of the art learning tool for Telerik products.
I tried to reproduce the described behavior but everything worked normally. Generally, Nodes added via Load-On-Demand are persisted on the server and they are available later after postback.
Can you provide more information about your TreeView definition and any code that might be interfering with the control's behavior?
Best wishes,
Simon
the Telerik team
Check out Telerik Trainer, the state of the art learning tool for Telerik products.