GridView扩展控件，支持冻结行、列等，dropDwList扩展-GridView extension control, support a freeze rows, columns, etc., dropDwList extension

extended gridview. this grid view is able to add new rows or columns to the datasource. you can also enable individual cell clicks. it works as rudimentary radgrid from telerik. it add "hidden" column with a textbox on each cell. To show the hidden

automatically get new rows every 3 (or any) seconds [by Javascr ipt timeout] from server [by jQuery get method] and then those new rows to gridView [by jQuery HTML manipulation].

GridView multiple rows select helper