Something interesting with code

Hey guys, I have a code for door animation. But in game when I press "E" , the door does animation twice. So, if the door was closed, I press E key and it's playing closing animation, then it opening and then it closing again, after that it's open. The same thing with closing. using UnityEngine; using System.Collections; using UnityEngine.Networking;

 public class Door : NetworkBehaviour {
 
     
     public Animator anim;
     [SyncVar] bool DoorOpen;
 
     void Start () {
         anim = GetComponent<Animator>();
         DoorOpen = false;
     }
 
     
     
     void OnTriggerStay(Collider col)
     {
         if (col.gameObject.tag == "Player" && Input.GetKeyDown(KeyCode.E) == true) {
 
             
                     if (DoorOpen == false)
                      {
                       DoorOpen = true;
                       //DoorControl("Open");
                      }
                     else
                      {
                       DoorOpen = false;
                       //DoorControl("Close");
                      }
             }
         }
 
     void Update()
     {
         if (DoorOpen == true)
         {
             DoorControl("Open");
         }
         else
         {
             DoorControl("Close");
         }
         Debug.Log(DoorOpen);
     }
 
 
     void DoorControl(string direction)
     {
         anim.SetTrigger(direction);
     }
 
     
 }