Dojo DataGrid loading selected items - datagrid

Question

I have a DataGrid and want a user to select multiple items and click a button to do something with those items (such as delete). When only a few items are selected, the deleting works, but if the user selects all the items without scrolling slowly over them, some of the selected items are null.
I also tried grid.removeSelectedRows(), but that also doesn't work for non-loaded items.
I tried fetching first, too:
grid.store.fetch({count:grid.rowCount,onComplete:dojo.hitch(this,function(){
var items = grid.selection.getSelected();
grid.selection.clear();
if (items.length) {
dojo.forEach(items, function(selectedItem) {
if (selectedItem !== null) {
grid.store.deleteItem(selectedItem); //or do something else
}
});
}
grid.sort();
})});
Even with the fetch, there are still null items, and only the very top and bottom rows actually get deleted.
Is there a way to load the selected items in a grid?

Answer 1

My task was to "extend" selection first item values to the rest of the selection. I've faced similar problem as yours, but finally found a solution:
updateSelected = function() {
//Callback for processing a returned list of items.
function gotSelected(items, request) {
var selectedIndex = paramGrid.selection.selected;
console.debug(selectedIndex);
var firstItem;
var counter = 0;
for (var i=0;i<selectedIndex.length;i++){
if(selectedIndex[i]){
var item = items[i];
if (counter < 1){
firstItem = item;
counter ++;
}else{
paramStore.setValue(item, "valueSPO", firstItem.valueSPO);
paramStore.setValue(item, "valueSPI", firstItem.valueSPI);
paramStore.setValue(item, "valueSM", firstItem.valueSM);
paramStore.setValue(item, "state", firstItem.state);
}
}
}
}
function fetchFailed(error, request) {
console.log("lookup failed.");
console.log(error);
}
paramStore.fetch({
query: {id: '*'},
onComplete: gotSelected,
onError: fetchFailed,
});
}
After this you have to connect this function to a button in addOnLoad:
dojo.connect(button2, "onClick", updateSelected);