Set displayfield of combo and binding its store dyanamically

bindStore() is suitable for changing data only provided that its fields are the same.
Reference : http://ift.tt/1ubPebU

I need to destroy some members.Here is the solution.

Ext.destroyMembers(combobox, 'displayTpl');

combobox.displayTpl = Ext.create('Ext.XTemplate',

'<tpl for=".">' +

'{[typeof values === "string" ? values : values["' + combobox.displayField + '"]]}' +

'<tpl if="xindex < xcount">' + combobox.delimiter + '</tpl>' +

'</tpl>'

);

Ext.destroyMembers(combobox, 'picker');

Set displayfield of combo and binding its store dyanamically