EXTjs gridfilter: How to clearfilter without reloading store?

Question

In extjs GridFilters, is there a way to clear the filters without reloading the store?
This is the rquirement:
There is a grid(#1) and another grid(#2) below the gri

Answer 1

After some Firebug stepping, I found this works quite well.

var store = this.getStore();
store.remoteFilter = false;
store.clearFilter();
store.remoteFilter = true;
store.filter(...);

remoteFilter does not seem to be a documented property, but it will suspend xhr calls while it's set to false.

When you set remoteFilter to false, when clearFilter() is called, the load() function is stepped over.