public static void LoadItems(AjaxResponse prevResponse, IAjaxMng ajaxMng, ComboBox cbx, String bioCode, Params bioParams, Action<ComboBox, AjaxResponse> callback, Boolean addNullItem, Boolean useCache) {
if ((prevResponse != null) && (!prevResponse.Success)) {
if (callback != null)
callback(cbx, prevResponse);
return;
}
var v_cli = new JsonStoreClient {
AjaxMng = ajaxMng,
BioCode = bioCode
};
CbxItems storedItems = null;
if (useCache)
storedItems = _restoreItems(bioCode);
if (storedItems != null) {
_loadItems(cbx, storedItems, addNullItem);
if (callback != null)
callback(cbx, new AjaxResponse { Success = true });
} else {
v_cli.Load(bioParams, (s, a) => {
if (a.Response.Success) {
var cbxitems = new CbxItems {metadata = v_cli.JSMetadata, ds = v_cli.DS};
if (useCache)
_storeItems(bioCode, cbxitems);
_loadItems(cbx, cbxitems, addNullItem);
}
if (callback != null)
callback(cbx, a.Response);
});
}
}
private static void _loadItems(ComboBox cbx, CbxItems items, Boolean addNullItem) {
if ((items != null) && (items.metadata.Fields.Count > 1)) {
cbx.SelectedValuePath = items.metadata.Fields[0].Name;
cbx.DisplayMemberPath = items.metadata.Fields[1].Name;
if (addNullItem) {
var nullRow = items.NewRow();
nullRow.SetValue(cbx.SelectedValuePath, null);
nullRow.SetValue(cbx.DisplayMemberPath, "<не выбрано>");
((IList)items.ds).Insert(0, nullRow);
}
cbx.ItemsSource = items.ds;
if (addNullItem)
cbx.SelectedIndex = 0;
}
}
private static void _storeItems(String bioCode, CbxItems items) {
Utl.StoreUserObjectStrg("cbxItems-" + bioCode, items, new JsonConverter[] { new CbxItemsConverter() });
}
