robertgalvinjr
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robertgalvinjr
asked on 28 Jan 2010, 09:13 PM
I am using a RadTreeview with a LINQ (to SQL) datasource. I would like to know is there a way to detect when the data has completely loaded? I need to have certain nodes prechecked and realize I can do this within the nodedatabound event, but I want to basically:
-Wait until the full data load has completed (so all children are present)
-Check a node like a user/client would have (and have all of the corresponding actions to happen)
-Wait until the full data load has completed (so all children are present)
-Check a node like a user/client would have (and have all of the corresponding actions to happen)
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Schlurk
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answered on 29 Jan 2010, 03:10 PM
I think one of the better events to do this in is either the OnClientLoad event (client-side) or the OnLoad server-side event. I know that the data has at least fully loaded by then. Are you looking to set a checkbox as checked and then have the usual event sequence fire?
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robertgalvinjr
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answered on 29 Jan 2010, 03:18 PM
Thanks for reply - I actually just did this from the client side by hooking into the OnLoad for the Body tag. Also coupled it wuth the AjaxRequest to make it all happen.
And then in the code behind just did a rebind of the data so the correpsonding ListView updated based on the checked nodes:
Also had to add an AjaxSetting manually to get the display to fresh:
| <body onload="SetChecked()"> |
| <telerik:RadCodeBlock runat="server" ID="RadCodeBlock1"> |
| <script type="text/javascript"> |
| function SetChecked() { |
| var tree = $find("<%= tvCategories.ClientID %>"); |
| var node = tree.findNodeByValue("<%= preSelectedNodeID %>"); |
| if (node) { |
| node.check(); |
| node.set_expanded(true); |
| var ajaxManager = $find("<%= RadAjaxManager1.ClientID %>"); |
| ajaxManager.ajaxRequest("client"); |
| } |
| } |
| </script> |
| </telerik:RadCodeBlock> |
And then in the code behind just did a rebind of the data so the correpsonding ListView updated based on the checked nodes:
| protected void RadAjaxManager1_AjaxRequest(object sender, Telerik.Web.UI.AjaxRequestEventArgs e) |
| { |
| lvPPT.DataBind(); |
| } |
Also had to add an AjaxSetting manually to get the display to fresh:
| <telerik:RadAjaxManager runat="server" |
| DefaultLoadingPanelID="RadAjaxLoadingPanel1" EnableHistory="True" |
| ID="RadAjaxManager1" |
| OnAjaxRequest="RadAjaxManager1_AjaxRequest"> |
| <AjaxSettings> |
| <telerik:AjaxSetting AjaxControlID="RadAjaxManager1"> |
| <UpdatedControls> |
| <telerik:AjaxUpdatedControl ControlID="tvCategories" /> |
| </UpdatedControls> |
| </telerik:AjaxSetting> |
| ... |