C# wpf Datagrid content alignment center via code

Question

I generate a Datagrid and want to center the content.

this is my code:

DataGrid tabelle = new DataGrid();
tabelle.ItemsSource = dt.DefaultView;
tabelle.RowHeight = 50;
tabelle.VerticalContentAlignment = VerticalAlignment.Center;
tabelle.HorizontalContentAlignment = HorizontalAlignment.Center;

It doesnt work... but why?

Answer 1

DataGridCell template does not use VerticalContentAlignment and HorizontalContentAlignment properties of DataGrid.

There are ways to get desired alignment. Take a look here: DataGrid row content vertical alignment

here is a solution in code

DataGrid tabelle = new DataGrid();
tabelle.ItemsSource = dt.DefaultView;
tabelle.RowHeight = 50;

// cell style with centered text
var cellStyle = new Style
                {
                    TargetType = typeof (TextBlock),
                    Setters =
                    {
                        new Setter(TextBlock.TextAlignmentProperty, TextAlignment.Center),
                        new Setter(TextBlock.VerticalAlignmentProperty, VerticalAlignment.Center),
                    }
                };

// assign new style for text columns when they are created
tabelle.AutoGeneratingColumn += (sender, e) =>
{
    var c = e.Column as DataGridTextColumn;
    if (c != null)
        c.ElementStyle = cellStyle;
};

Answer 2

cellStyle = new Style(typeof(DataGridCell)) { Setters = { new Setter(TextBlock.TextAlignmentProperty, TextAlignment.Center) } };

tabelle.CellStyle = cellStyle;