How to add a DataGrid Dynamically using CodeBehind

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C#

WPF

C#4.0

DataGrid

private void button2_Click(object sender, RoutedEventArgs e)
       {

           connectionstring = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:/Project/Book.accdb";
           connection = new OleDbConnection(connectionstring);
           sql = "Select*from Authors";

           try
           {
               connection.Open();
               oledbAdapter = new OleDbDataAdapter(sql, connection);
               oledbAdapter.Fill(dt);

               // dataGrid1.DataContext = dt;

           }
           catch (Exception ex)
           {
               MessageBox.Show(ex.ToString());
           }

           DataGrid dg2 = new DataGrid();
           dg2.Height = 200;
           dg2.Width = 200;
           dg2.AutoGenerateColumns = true;
           dg2.AlternatingRowBackground = Brushes.Black;
           dg2.Background = Brushes.Red;
           dg2.BorderBrush = Brushes.Pink;
           dg2.HorizontalGridLinesBrush = Brushes.Black;
           dg2.DataContext = dt;
           stackPanel1.Children.Add(dg2);

       }

it is expected that the code should display the DataGrid with its underlying Data. but it is not happening.
it gives only a Red back ground. no data at all .No Grid lines also. I am missing something very seriously. please i request somebody help

Regards

Iqbal
NB: I am just started learning