[Solved] Performance issues when TimePicker is registered in IE 7/8

[Andreas Kluth]

Hi all,

I'm currently evaluating the Telerik MVC controls (2011.2.712) to enhance an existing MVC3 app. Some part of the application is used to track times spent on a project, therefore using the TimePicker would be a nice usability increase.

However having a list of 5 entities having 7 TimePickers each (a total of 35 input fields) tends to result in a registering time of 2-4 seconds in IE8 (the TimePicker performs well in Chrome and Firefox). I first thought that this is due to the massive amount of jquery selectors generated by WriteInitializationScript,

jQuery('#PrototypeViewModels\\[0\\]_Monday').tTimePicker({effects:{list:[{name:'toggle'}],openDuration:200,closeDuration:200}, format:'HH:mm', minValue:new Date(2011,6,14,0,0,0,0), maxValue:new Date(2011,6,14,0,0,0,0), interval:15, openOnFocus:true});

 
but overwriting ViewComponentFactory and extending WriteInitializationScript in TimePicker by building a custom class, so that all input fields are selected at once by a jquery wildcard selector did not increase performance significantly.

<%@ Control Language="C#" Inherits="PerfomanceIssuePrototype.ViewUserControl<PerfomanceIssuePrototype.Models.TimeReport>" %>
<tr>
  <td><%: Html.Telerik().TimePickerFor( m => m.Monday ) %></td>
  <td><%: Html.Telerik().TimePickerFor( m => m.Tuesday   ) %></td>
  <td><%: Html.Telerik().TimePickerFor( m => m.Wednesday ) %></td>
  <td><%: Html.Telerik().TimePickerFor( m => m.Thursday ) %></td>
  <td><%: Html.Telerik().TimePickerFor( m => m.Friday ) %></td>
  <td><%: Html.Telerik().TimePickerFor( m => m.Saturday ) %></td>
  <td><%: Html.Telerik().TimePickerFor( m => m.Sunday ) %></td>
</tr>

Is there any known solution to this issue or can anybody with a better knowlege of jQuery have a look what happens when the input field is extended with tTimePicker that seems to cause the performance issue in IE8.

Thanks in advance,
Andreas Kluth

[gabriele]

I have the same problem. Even with other controls: DatePicker, DropDown and Combobox. The problem is with internet explorer 8. other browsers are all fast. what is the reason?