Hi Palak,
The filter with the editing like a textbox filter can be achieved by the Dynamic filter which has been added as a feature after 7.1 releases. This dynamic filter has the edit part which acts as a textbox and the filter happens on each key stroke.
The sample is available in our sample browser on the below location:
{Install Drive}:\Syncfusion\{Version Number}\Windows\Grid.Grouping.Windows\Samples\2.0\Filters and Expressions\Dynamic Filter Demo
Regarding the sample in the previous update of this forum, I am able to download and make us of the sample attached. If you still unable to download please try with the following link to download:
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=ExampleGrid968824263.zipLet me know if you have any queries.
Regards,
Nirmal