How to scroll the items in stack panel in WPF Using Buttons

Hi, all.

I have a requirement like I need to bind some buttons to stack panel and I need to put two buttons below if I click on Down button I need to show the items which are below the default came items like the same for up button also.

What I have tried:

I just bind items to stack panel programmatically.

if (ds != null && ds.Tables[0].Rows.Count > 0)
{

for (int i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
{
Button[] Button = new Button[ds.Tables[0].Rows.Count];
try
{
Button[i] = new Button();
string id = ds.Tables[0].Rows[i][0].ToString();
string status = ds.Tables[0].Rows[i][1].ToString();
if (status == "Pending")
{
Button[i].Background = Brushes.Red;
}
if (status == "Cancelled")
{
Button[i].Background = Brushes.Orange;
}
if (status == "Completed")
{
Button[i].Background = Brushes.Green;
}
// string s1 = ds.Tables[0].Rows[i][1].ToString();
Button[i].Content = id;
Button[i].Tag = id;
Button[i].Click += btn_Click;
Button[i].Height = 41;
Button[i].Width = 120;
Button[i].Foreground = Brushes.White;
Button[i].FontWeight = FontWeights.Bold;
Button[i].FontStyle = FontStyles.Italic;
Button[i].FontSize = 14;
stackPanel1.Children.Add(Button[i]);
}
catch (Exception ex)
{
}
}

}
private void btnup_Click(object sender, RoutedEventArgs e)
{
//what should i do here
}

private void btndown_Click(object sender, RoutedEventArgs e)
{
//what should i do here
}