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I have a datatable with column that im sorting first alphabeticaly then when user clicks on a button i want it to be sort numericaly how can i do this , i can't set parser: number because my datatable with it's datasource is already created and rendered .

any ideas ?

Thanks.

Thanks for the response satyam ,

I can't use the column definition as in that example because i already have my datatable created ,
i was hoping that there's a way to change a sortfunction after the datatable has been displayed ,
like setting the datatable's attribute sortFunction and maybe refresh the datatable or requery it afterwards.
is this possible ?

Thanks.