Convert string to int C#

I have some problem with my login. My login is so simple. User type name and then that name will be show up when it play. In my script I have some problem with convert string to int. I use playerprefs for saving that name, but playerprefs doesnt wont to saving the name. Please help me. I have to finished t$$anonymous$$s task in 1 week.

T$$anonymous$$s is my script

bool player1 = false; bool player2 = false;

 public static string EditPlayer1 = "";
 public static string EditPlayer2 = "";
 public static int IntEditPlayer1;
 public static int IntEditPlayer2;
 
 GUIStyle myFont;
 void start (){
     myFont = new GUIStyle ();
     myFont.fontSize= 12;
     
 }
 void OnGUI() {
     
     
     Event e = Event.current;
     
     if (e.keyCode == KeyCode.Return)
         player1 = true;
     else if (false == player1)     
         EditPlayer1 = GUI.TextField (new Rect (450, 230, 300, 50), EditPlayer1,200);
     IntEditPlayer1 = System.Int32.TryParse(EditPlayer1); <<< ERROR
     PlayerPrefs.SetInt ("Player1", IntEditPlayer1);
     
     if (e.keyCode == KeyCode.Return)
         player2 = true;
     else if (false == player2)   
         EditPlayer2 = GUI.TextField (new Rect (450, 310, 300, 50), EditPlayer2,200);
     IntEditPlayer2 = System.Int32.TryParse (EditPlayer2); <<< ERROR
     PlayerPrefs.SetInt ("Player2", IntEditPlayer2);
 }

 void Update(){
     Debug.Log ("EditUser"+EditPlayer1);
 }