ReDraw the data table Header

Karthikraja

I have a data table with drop down option , when i change the drop down value few columns should be displayed/hided based on codition this is done. when i rearraning the column by drag and drop and do change the drop down valueto laod set of recrtods with different column header still i could seee old column whchi i have drag and dropped it is not removed from the new datatable ,any help on this appreciated..