title: WPF- How to set event Up, Down, Left, Right without using the Up, Down, Left and Right Arrow Key?
body: <p>I am doing HCI (Human Computer Interaction) using face tracking. I am trying to control PC using face.</p>
  
  <p>I have 3x3 2 dimensional grid of button. 
  1 2 3
  4 5 6
  7 8 9</p>
  
  <p>Suppose, current focus on button 5. if I press up arrow then focus will be on 2, down arrow focus will be on 8 , left arrow 4 and right arrow 6.</p>
  
  <p>I want to implement functionality of Up,Down,Left and Right arrow functionality without using Up,Down,Left and Right arrow key. I have already done taking left,right, up and down decision. What eventhandling, setting up tabindex and further process need to be taken? </p>