How to dynamically arrange buttons in Windows phone 8 app

Here is my code............

int i = 0; int j = 0;

int button_number = 1;

foreach (var element in jsonObj.ds.Table)

{

depot_collection.Add(element.depot);

Button btn = new Button();

btn.Height = 160;

btn.Width = 160;

btn.Content = element.terr;

btn.Background = new SolidColorBrush(Colors.Blue);

btn.Foreground = new SolidColorBrush(Colors.White);

btn.BorderBrush = new SolidColorBrush(Colors.Blue);

btn.Margin = new Thickness(-300 + (j * 290), 200 + (i * 290), 0, 0);//- (extra_row * 275),

LayoutRoot.Children.Add(btn);

if (button_number % 3 == 0)

{

i++;

j = 0;

}

else

{

j++;

}

button_number++;

}

Am I forward on right way? or have there any better concept to do this?