Filter a DataGrid on a Text box

Question

I search an example or sample to filter the WPF DataGrid column elements by a textbox.

S

Answer 1

I have written my own FilterDataGrid Control, it's much more flexible than the ones provided on CodeProject or elsewhere. I can neither post the full code here, nor can I publish it.

But: Since your datasource is most likely wrapped into a ICollectionView, you can do something like this:

    public void ApplyFilters()
    {
        ICollectionView view = CollectionViewSource.GetDefaultView(ItemsSource);
        if (view != null)
        {
            view.Filter = FilterPredicate; 
        }
    }

    private bool FilterPredicate(object item)
    {
        var yourBoundItemOrRow = item as BoundItemType;

        return aFilterObject.Matches(yourBoundItemOrRow);
    }

You can implement any filter logic easily based on this concept. Even very, very powerful filters. Note: I have those methods in my own class derived from datagrid. They can be adapted to work outside of the grid, too, for example in a UserControl