How do I remove the filter three fields

Question

Good afternoon,
I own a gridGroupingControl, with two columns.
I also put the filter that comes in gridGroupingControl.
But in the filter appears by default: All, Custom ... Empty.
And then the list of column options.
Example filter column User:
(All)
(Custom. ..)
(Empty)
Alan
Roberth
Cleber
Eduardo
Diego

But I do not want these options appear in the filter:
(All)
(Custom. ..)
(Empty)

As I do I get those three filter options gridGroupingControl's column?

thank

Rajadurai C · Answer

Hi Tomio,Thanks for your interest in Syncfusion Products.We found that you have posted similar inquiry under the following forum thread which was answered.http://www.syncfusion.com/support/forums/grid-windows/99102/Please follow up with the above mentioned forum thread for any further queries related to this.Regards,Rajadurai