private void createFilterExpressionsAndFilteredCollection(out bool filterChanged, bool force)
{
QueryCreator queryCreator = new QueryCreator(filtersForColumns);
queryCreator.CreateFilter(ref query);
filterChanged = (query.IsQueryChanged || (query.FilterString != String.Empty && isRefresh));
if ((force && query.FilterString != String.Empty) || (query.FilterString != String.Empty && filterChanged))
{
IEnumerable collection = ItemsSource as IEnumerable;
if (ItemsSource is ListCollectionView)
{
collection = (ItemsSource as ListCollectionView).SourceCollection as IEnumerable;
}
var observable = ItemsSource as System.Collections.Specialized.INotifyCollectionChanged;
if (observable != null)
{
observable.CollectionChanged -= new System.Collections.Specialized.NotifyCollectionChangedEventHandler(observable_CollectionChanged);
observable.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(observable_CollectionChanged);
}
#region Debug
#if DEBUG
System.Diagnostics.Debug.WriteLine("QUERY STATEMENT: " + query.FilterString);
string debugParameters = String.Empty;
query.QueryParameters.ForEach(p =>
{
if (debugParameters.Length > 0)
{
debugParameters += ",";
}
if (p != null)
{
debugParameters += p.ToString();
}
});
System.Diagnostics.Debug.WriteLine("QUERY PARAMETRS: " + debugParameters);
#endif
#endregion
if (query.FilterString != String.Empty)
{
var result = collection.AsQueryable().Where(query.FilterString, query.QueryParameters.ToArray <object>());
filteredCollection = result.Cast <object>().ToList();
}
}
else
{
filteredCollection = null;
}
query.StoreLastUsedValues();
}
private void createFilterExpressionsAndFilteredCollection(out bool filterChanged)
{
QueryCreator queryCreator = new QueryCreator(filtersForColumns);
queryCreator.CreateFilter(ref query);
filterChanged = (query.IsQueryChanged || (query.FilterString != String.Empty && isRefresh));
if (query.FilterString != String.Empty && filterChanged)
{
IEnumerable collection = ItemsSource as IEnumerable;
if (ItemsSource is ListCollectionView)
{
collection = (ItemsSource as ListCollectionView).SourceCollection as IEnumerable;
}
#region Debug
#if DEBUG
System.Diagnostics.Debug.WriteLine("QUERY STATEMENT: " + query.FilterString);
string debugParameters = String.Empty;
query.QueryParameters.ForEach(p =>
{
if (debugParameters.Length > 0)
{
debugParameters += ",";
}
debugParameters += p.ToString();
});
System.Diagnostics.Debug.WriteLine("QUERY PARAMETRS: " + debugParameters);
#endif
#endregion
var result = collection.AsQueryable().Where(query.FilterString, query.QueryParameters.ToArray <object>());
filteredCollection = result.Cast <object>().ToList();
}
else
{
filteredCollection = null;
}
query.StoreLastUsedValues();
}
