[Users] Layers with Feature Grid

[truongxuan quang]

Hello all 

I am doing as following 
example http://api.geoext.org/1.0/examples/feature-grid.html, in my web I would 
do for more than 3 layers of feature grids in different json file by 
using combobox to control and switch visible of layer and refresh feature of 
grid, but when I changed my combobox as you can see bellow 

 var datastore = new Ext.data.SimpleStore({
    fields: ['alpha2code','name'],
    data: [["basin","topp:basin"],["rainfall","rainfall 
station"],["tram1","Stations1"]]
  });

I face with problem that I dont know how to refresh a map and feature grid after 
switch my combobox for control layers
My problem is I did not know Geoext scripts or functions  similar to my work. 
Could you please give me idea about this case 

Many thanks

Quang


      
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