How can I stop timer(in other words stop browser refresh/page refresh), while dragging a task from RadGrid to RadScheduler and how can I start timer(in other words start browser refresh/page refresh), after the task is dropped.
My drag and drop is similar to this demo
http://demos.telerik.com/aspnet-ajax/scheduler/examples/draganddropintegration/defaultcs.aspx?product=scheduler

This is my code for RadScheduler:
<telerik:RadScheduler ID="rsTicketsSchedule" runat="server" AllowInsert="False" DisplayDeleteConfirmation="False"
                            Localization-HeaderToday="Today" EnableCustomAttributeEditing="True" EnableDescriptionField="True"
                            Height="100%" EnableExactTimeRendering="true" EnableViewState="true" OverflowBehavior="Scroll"
                            ShowAllDayRow="false" OnAppointmentDataBound="TicketsSchedule_AppointmentDataBound"
                            OnNavigationComplete="rsTicketsSchedule_NavigationComplete" OnNavigationCommand="rsTicketsSchedule_NavigationCommand"
                            OnTimeSlotCreated="rsTicketsSchedule_TimeSlotCreated" OnAppointmentUpdate="onApptUpdate"
                            OnClientAppointmentDoubleClick="rsClientAppointmentDoubleClick" OnClientAppointmentClick="singleClick"
                            OnClientAppointmentContextMenu="CheckTimerStatus" OnClientAppointmentContextMenuItemClicked="handleClick"
                            OnClientFormCreated="ClientFormCreated" OnDataBound="rsTicketsSchedule_DataBound"
                            OnClientAppointmentMoveEnd="AppointmentMoved" OnClientAppointmentDeleting="OnClientAppointmentDeleting"
                            OnClientAppointmentMoveStart="StopTimer" 
                            CustomAttributeNames="HasAttachment"    DataReminderField="Reminder" OnClientAppointmentEditing= "StopTimer"    >
                           <AppointmentTemplate>
                                 <div>
                                         <asp:Panel ID="RecurrencePanel" CssClass="rsAptRecurrence" runat="server" Visible="false" />
                                         <asp:Panel ID="RecurrenceExceptionPanel" CssClass="rsAptRecurrenceException" runat="server"
                                              Visible="false" />
                                       <%--  <asp:Panel ID="ReminderPanel" CssClass="rsAptReminder" runat="server" Visible="true" />--%>
                                         <div id="ApptImageDiv" style="text-align:right; position:absolute; width:95%;" >
                                             <asp:Image ID="ApptAttachmentImg" runat="server"  Width="16px" Height="17px" style=" margin-right:5px; background:url(img/sprite-alpha.png)-166px -34px no-repeat; background-position: -98px -66px; border:transparent; " 
                                                           Visible='<%# String.IsNullOrEmpty(Container.Appointment.Attributes["HasAttachment"])? false : Boolean.Parse(Container.Appointment.Attributes["HasAttachment"]) %>'
                                              />
                                          </div>
                                         <%#Eval("Subject") %>     
                                  
                                  </div>
                            </AppointmentTemplate    >
                        
                            <AppointmentContextMenus     >
                            </AppointmentContextMenus>
                            <DayView UserSelectable="True" GroupBy="TechName" GroupingDirection="Horizontal" />
                            <WeekView UserSelectable="True" GroupBy="TechName" GroupingDirection="Vertical" />
                            <MonthView UserSelectable="True" GroupBy="TechName" GroupingDirection="Vertical" />
                            <TimelineView ColumnHeaderDateFormat="h:mm tt" GroupingDirection="Vertical" HeaderDateFormat="MM/dd/yyyy h:mm tt"
                                NumberOfSlots="21" SlotDuration="00:30:00" StartTime="08:00:00" />
                            <AdvancedForm EnableCustomAttributeEditing="True" Modal="True" />
                            <ResourceTypes>
                                <telerik:ResourceType Name="TechName" />
                                <telerik:ResourceType Name="TicketState" />
                            </ResourceTypes>
                            <Reminders Enabled="true"></Reminders>
                                
                        </telerik:RadScheduler>

Thanks for your help in advance

<%

@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>

<!

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 runat="server">

<title></title>

<telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server" />

<script type="text/javascript">

function Is_Event_selected(sender, args) {

debugger;

var lstbox = $find("lstEvents");

var chkedItems_Count = lstbox.get_checkedItems().length;

args.IsValid = chkedItems_Count > 0;

}

</script>

</

head>

<

body>

<form id="form1" runat="server">

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

<Scripts>

<%

--Needed for JavaScript IntelliSense in VS2010--%>

<%

--For VS2008 replace RadScriptManager with ScriptManager--%>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" />

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" />

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" />

</Scripts>

</telerik:RadScriptManager>

<script type="text/javascript">

//Put your JavaScript code here.

</script>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

</telerik:RadAjaxManager>

<div>

<asp:CustomValidator ID="CV_lstEvents" runat="server" ValidateEmptyText="true" ClientValidationFunction="Is_Event_selected"

ControlToValidate="lstEvents" ErrorMessage="please Select Items(s)" ValidationGroup="Event_Group_Validation">

</asp:CustomValidator>

<telerik:RadListBox ID="lstEvents" runat="server" Width="100%" MaxHeight="225px"

CheckBoxes="true" AutoPostBack="false" EmptyMessage="Select Event" CausesValidation="false" >

<Items>

<telerik:RadListBoxItem Text="Ajax Controls" Value="0" />

<telerik:RadListBoxItem Text="BI Controls" Value="1" />

<telerik:RadListBoxItem Text="SilverLight" Value="2" />

<telerik:RadListBoxItem Text="KenDo UI" Value="3" />

</Items>

</telerik:RadListBox>

<asp:Button ID="btn" runat="server" ValidationGroup="Event_Group_Validation" />

</div>

</form>

</

body>

</

html>

1. The control should allow the placing of "Select a Following..." in the EmptyMessage
2. The AutoCustomText should be able to be set to False
3. The MarkFirstMatch should be able to be set to True.
4. A standard .NET validator should be able to validate that nothing is selected (the EmpyMessage is being displayed). 

A sample of what ideal code would look like would look something like this:

(the code below worked great, BTW)

Thanks, Laird Rixford
Insurance Website Builder