public static ASPxComboBox MarkItemsAsDisabled <T>(this ASPxComboBox source, Func <T, bool> predicate)
{
var dataSource = source.DataSource as IEnumerable <T>;
if (dataSource != null)
{
var filteredDataSource = dataSource.Where(predicate);
source.JSProperties["cpDisabledItems"] = filteredDataSource
.ToDictionary(x => source.FetchInternalValue(x), x => true);
}
return(source);
}
