how to show/ hide column in a extjs 3 grid panel

Question

I have a grid panel i need to show / hide columns in a grid panel depending on the value of a checkbox. If the checkbox is checked i need to display column in the grid and i

Answer 1

if take a look at the ExtJS API, particulary the ColumModel there is a setHidden method, it would hide/show a column in a GridPanel.

myGrid.getColumnModel().setHidden(0, true);

you should also hook the onchange event of your check box so you can show or hide the column