How to refactor similar code in conditional statements?

Question

I wanted to refactor this big piece of bloated code ,I feel like there is a better way to rewrite this. Does anyone have idea of how to do it?

if (ls.SelectedIndex == 1) { grid1.Visibility = Visibility.Visible; }
...
if (ls.SelectedIndex == 58) { grid58.Visibility = Visibility.Visible; }

Answer 1

Create array of Grid

var gridArray = new Grid[N];

Fill it:

gridArray[1] = grid1;
gridArray[2] = grid2;
...

Use:

gridArray[ls.SelectedIndex].Visibility = Visibility.Visible;