Hi Nedu,
Issue 1:
Please refer to this KB article for customize the filterbar entry in a grid.
< a rel='nofollow' href="http://www.syncfusion.com/support/kb/grid/Default.aspx?ToDo=view&questId=323">http://www.syncfusion.com/support/kb/grid/Default.aspx?ToDo=view&questId=323
Issue 2 & 3:
You can do this by adding the custom celltype in a grid. Please refer to the attached sample for more details.
http://www.syncfusion.com/Support/user/uploads/GGC_FilterBar_DropDownUserControl_45d58614.zipHere is a forum thread that discuss with the custom celltype.
http://www.syncfusion.com/support/forums/message.aspx?&MessageID=31307Best regards,
Haneef