I need to apply filtering on my gridview columns. For that i need to keep a dropdown that would contain the text of that column. For e.g. Emp ID column contains data as Emp1,Emp2,Emp3.. hence the filter would also contain the same data.

The filter needs to be kept in the gridview header and selecting the apt data, say Emp1 would bind the grid again and filter the grid with selected data.

My Question: Other that aspx dropdownlist and ajax combobox, which are FREE options available that could be use to fulfill the requirements.