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Intermittent Error

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answered on 14 Jan 2011, 02:33 PM

Hello Andy,

This error means that RadGrid is unable to find the aforementioned datakey in your datasource. Please verify if specified DataKeyNames are available in the grid data source.
I would also suggest you to open a forma support ticket and send us sample runnable application which replicates the error. Thus we will be able to test it locally and advise you further.

Greetings,
Maria Ilieva
the Telerik team

Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

answered on 24 Jan 2011, 04:40 PM

I cant post my entire response in 1 go, the server times out, so here it is in 3 parts:

Part 1 - There error messages:

Gridview/Dashboard.aspx.vb : tmrDashboard_Tick() : Parameters : Location_ID = 180 , Specialty = 114 , Status = 0,1 , TimeScale = 1 : There was a problem extracting DataKeyValues from the DataSource. Please ensure that DataKeyNames are specified correctly and all fields specified exist in the DataSource.

Gridview/Dashboard.aspx.vb : AjaxManager_AjaxRequest / LocationChange() : Parameters : Location_ID = 203 , Specialty = , Status = 0,1 , TimeScale = 1 : sname is neither a DataColumn nor a DataRelation for table .

(The blanks in the request are defaults in the database)

This runs 99% of the time, it only trips up now and again, but enough for the customer to be loosing confidence in the code.

Andy

answered on 24 Jan 2011, 05:05 PM

Part 2 - ASPX Page: I can't format as teh buttons are missing from the code format popup :

@ Page Language="VB" AutoEventWireup="false" CodeFile="Dashboard.aspx.vb" Inherits="GridViews_Dashboard"%>

@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

html xmlns="http://www.w3.org/1999/xhtml">

head id="Head" runat="server">

<title>Arrivals</title>

<telerik:RadScriptBlock ID="RadScriptBlock" runat="server">

function refreshGrid() {

$find(

"<%= AjaxManager.ClientID %>").ajaxRequest("Rebind");

}

function SliderLoaded(sender, args) {

sender.repaint();

$get(

"txtSliderValueArrivals").value = sender.get_value();

}

function pageLoad() {

var comboBox = $find("<%= ddlLocation.ClientID %>");

var tree = comboBox.get_items().getItem(0).findControl("rtvLocation");

var selectedNode = tree.get_selectedNode();

if (selectedNode) {

comboBox.set_text(selectedNode.get_text());

}

function StopPropagation(e) {

if (!e) {

e = window.event;

}

e.cancelBubble =

true;

}

function nodeClickingLocation(sender, args) {

var comboBox = $find("<%= ddlLocation.ClientID %>");

var node = args.get_node()

comboBox.set_text(node.get_text());

comboBox.trackChanges();

comboBox.get_items().getItem(0).set_value(node.get_text());

comboBox.get_items().getItem(0).get_attributes().setAttribute(

"nodeValue", node.get_value());

comboBox.commitChanges();

comboBox.hideDropDown();

$find(

"<%= AjaxManager.ClientID %>").ajaxRequest("LocationChange");

}

function DownOpenedHandlerLocation(sender, eventArgs) {

var tree = sender.get_items().getItem(0).findControl("rtvLocation");

var selectedNode = tree.get_selectedNode();

if (selectedNode) {

selectedNode.scrollIntoView();

}

</script>

</telerik:RadScriptBlock>

head>

body id="DashboardbodyMaster" runat="server">

<telerik:RadScriptManager ID="ScriptManager" runat="server"></telerik:RadScriptManager>

<telerik:RadAjaxManager ID="AjaxManager" runat="server" UpdatePanelsRenderMode="Inline" DefaultLoadingPanelID="LoadingPanel" OnAjaxRequest="AjaxManager_AjaxRequest">

<telerik:AjaxSetting AjaxControlID="AjaxManager">

<telerik:AjaxUpdatedControl ControlID="ddlSpecialty"/>

<telerik:AjaxUpdatedControl ControlID="btnAddToList"/>

<telerik:AjaxUpdatedControl ControlID="btnRefresh"/>