Ability to add custom buttons to the command item collection. 

We are using RadGrid in SharePoint Visual Webpart with FilterType="CheckList". What we need is to be able to filter the checklist further with auto filter textbox.
1. When the filter icon is clicked, it fills with all available options (say 100 + records).
2. User enters few characters (say first 4) in the textbox and the list gets filtered with the all options starting with... (resulting in 8 records)
3. User then selects the required option for the final filter.

Please find attached image for clarification.

Kendo ui Grid is taking more than 10 secs to load Data.It contains approx 16000 records.I am using Ajax call to get data from Database.Please let me know how to reduce the load time.In ASP grid it is taking not more than 3 secs to load the data of 16000 records.

As per the current implementation of the RadGrid control, if we set the CurrentFilterFunction, that will be used for that column and even with no value, the same filter function will be used (specified in the CurrentFilterFunction).

This is not user friendly and one should expect that "NoFilter" will be invoked when there is no value.

There is no possibility for invoking the "NoFilter" command when the following properties are set:
ShowFilterIcon = False and AutoPostBackOnFilter = True

please refer the following link for more information:
http://www.telerik.com/forums/filter-not-resetting-if-filtervalue-is-empty-in-client-side-filtering

You have very useful property - EnableTimeIndependentFiltering for GridDateTimeColumn. But I need to use ItemTemplate and EditItemTemplate and this future missing in GridTemplateColumn. I try to use FilterTemplate with RadDatePicker, but then I have only "equal to" option for filtering. I don't want this. So my suggestion to you is to develop EnableTimeIndependentFiltering for the cases when user have to use GridTemplateColumn with DataType=System.DateTime.