GridViewColumn CellTemplate Code Behind

t.smith.htc picture t.smith.htc · Jun 14, 2011 · Viewed 10.5k times · Source

I have a listView that I construct at run-time, i.e. the columns are not known at compile-time.

I would like to apply a DataTemplate to the cells such that the TextAlignment property is TextAlignment.Right. When creating the columns:

foreach (var col in dataMatrix.Columns)
{
    gridView.Columns.Add(
        new GridViewColumn
        {
            Header = col.Name,
            DisplayMemberBinding = new Binding(string.Format("[{0}]", count)),
            CellTemplate = getDataTemplate(count),
        });
    count++;
}

private static DataTemplate getDataTemplate(int count)
{
    DataTemplate template = new DataTemplate();
    FrameworkElementFactory factory = new FrameworkElementFactory(typeof(TextBlock));
    factory.SetValue(TextBlock.TextAlignmentProperty, TextAlignment.Right);
    template.VisualTree = factory;

    return template;
}

The sample code above does not work properly as the cell contents is still aligned to the left.

Answer

Philippe Lignon picture Philippe Lignon · Oct 6, 2011

If you use DisplayMemberBinding, CellTemplate will not be used.

You must remove the line DisplayMemberBinding and add the binding as part of the data template:

private static DataTemplate getDataTemplate(int count)
{
    DataTemplate template = new DataTemplate();
    FrameworkElementFactory factory = new FrameworkElementFactory(typeof(TextBlock));
    factory.SetValue(TextBlock.TextAlignmentProperty, TextAlignment.Right);
    factory.SetBinding(TextBlock.TextProperty, new Binding(string.Format("[{0}]", count)));
    template.VisualTree = factory;

    return template;
}