or


Hello,
How do I cancel the appointment editor popup after the user double-clicks an appointment? I need to implement some validation before I allow the user to edit an appointment. This is an example of my code, but the set_cancel method is not valid apparently.
function onAppointmentDoubleClick(sender, eventArgs) { var ID = '<%=ID%>'; if (ID == '0') { eventArgs.set_cancel(true); } }<telerik:RadEditor Skin="Windows7" ToolsFile="~/Content/tools.xml" RegisterWithScriptManager="false" ID="TestEditor1" runat="server" DialogHandlerUrl="Telerik.Web.UI.DialogHandler.axd" SpellCheckSettings-AjaxUrl="/Telerik.Web.UI.SpellCheckHandler.axd" EditModes="Design,Preview" SpellCheckSettings-FragmentIgnoreOptions="All" SpellCheckSettings-WordIgnoreOptions="RepeatedWords,UPPERCASE"></telerik:RadEditor>