[CLOSED] TreeGrid update

Hello,

I would want to do the following but it doesn't work as expected.

When I click a button a Ajax.request is sent to the server which returns a response in Json format. The response is in fact the content of my treegrid and I want to refresh the treeGrid with this response. I get the response correctly but unfortunately the treeGrid doesn't refresh.

As follow is the diffrent code I use:

The request is made with this ajax request

Code:

---

Ext.Ajax.request({
url: '<%= Url.Action("action", "controller") %>',
method: 'POST',
params: { data: data },
success: function(p1, p2) {
var nodes = eval(p1.responseText);
if(nodes.length > 0){
treeGrid.initChildren(nodes);
}
}
});

---

Here is the code of the action

Code:

---

[AcceptVerbs(HttpVerbs.Post)]
publicActionResult action(string data)
{
 
List<Dictionary<string, object>> dict = newList<Dictionary<string,object>>();
dict.Add(newDictionary<string, object>() { { "dateApproval", "tester" }, { "leaf", true } });
 
returnthis.Json(dict);
}

---

The TreeGrid is defined as follow

Code:

---

<ext:TreeGridID="treeGrid"runat="server"Title="titre"
AutoScroll="true"Height="200">
<Columns>
<ext:TreeGridColumnDataIndex="dateApproval"Width="200"/>
</Columns>
</ext:TreeGrid>

---

What is going wrong in my code and what should be done the have the code behave as wished?

Romuald.

Hi,

In the action you have to use TreeNodeCollction and call ToJson method for serialization
For example see the code of the http handler in the following example
https://examples1.ext.net/#/TreePane...Using_Handler/