How to display a popup Window when the HyperLink cell is clicked

<TextBlock Text="Popup window with hyperlinkcellclick value" Foreground="DeepPink" FontSize="10" Grid.Row="0" Grid.ColumnSpan="2" />

                                <TextBlock Text="Value" Grid.Row="2" Grid.Column="0" />

                                <TextBlock Name="value" Grid.Row="2" Grid.Column="1" Foreground="Maroon"/>

                                <Button Content="Close pop Up" Click="Button_Click" Grid.Row="4" Grid.ColumnSpan="2"/>

this.pivotGridControl1.HyperlinkCellClick +=new HyperlinkCellClick(pivotGrid1_HyperlinkCellClick);

private void pivotGrid1_HyperlinkCellClick(object sender, HyperlinkCellClickEventArgs e)

        {

            popup.IsOpen = true;

            popup.Visibility = Visibility.Visible;

            value.Text = e.PivotCellInfo.FormattedText;

        }

        private void Button_Click(object sender, RoutedEventArgs e)

        {

            popup.IsOpen = false;

            popup.Visibility = Visibility.Collapsed;

        }