string comparisons

Use http://msdn.microsoft.com/en-us/library/zkcaxw5y.aspx

The result is -1, 0 or 1 depending if the first is before, same or after.

   string a = "Player1";
   string b = "Player2";
   print(String.Compare (a, b));

This will print -1 since the first is smaller than the second.

   string a = "Phil";
   string b = "Alan";
   print(String.Compare (a, b));

This will print 1 since Phil is alphabetically after Alan.

Each char is compared until there is a mismatch, the result of it defines the return value.

EDIT:

 int result = String.Compare(exp, expToLevel); 
 if( result < 0) // Not enough exp
 else if (result == 0) // Just the right amount
 else if (result > 0) // More than enough

Posting in answer to let people see the lines.

This is my script now.On line 62 i need my ExpToLevel to be a string not an int but i already set it as a ExpToLevel int.

     //public int CurLevel;
     //public int NextLevel;
     //public int ExpToLevel;
     //public int Exp;
     public int CurLevel;
     public int NextLevel;
     public int ExpToLevel;
     public string Exp;
     public static RankManager Inst;
     public int MaxLevel;
     public WeaponManager Player;
     // Use this for initialization
     void Start () {
 
         Debug.Log ("Getting xp");
         Exp = PlayerPrefs.GetString("PlayerScore");
         Debug.Log ("Got xp");
         //NextLevel = CurLevel + 1;
         Inst = this;
 
     }
 
     // Update is called once per frame
     void Update () {
         //int xp;
     //  if (int.TryParse(Exp, out xp))
         //Exp = PlayerPrefs.GetInt ("PlayerScore");
         //Debug.Log ("Update xp");
 
         if (NetworkManager.Instance.MyPlayer.PlayerName != "") 
         {
             Player = NetworkManager.Instance.MyPlayer.Manager.FirstpersonCont;
 
             foreach(Gun g in Player.Weapons)
             {
                 if(CurLevel > g.UnlockLevel)
                 {
                     g.Unlocked = true;
                 }
                 else
                 {
                     g.Unlocked = false;
                 }
                 foreach(Sight s in g.Sights)
                 {
                     if(s.UnlockKills >= g.Kills)
                     {
                         s.Unlocked = true;
                     }
                     else
                     {
                         s.Unlocked = false;
                     }
                 }
             }
     }
         if (CurLevel >= MaxLevel)
         {
             CurLevel = MaxLevel;
         }
             if (Exp >= ExpToLevel) 
             {
                 CurLevel++;
                 NextLevel = CurLevel + 1;
                 ExpToLevel *= 2;
                 if(Network.peerType != NetworkPeerType.Disconnected)
                 {
                     NetworkManager.Instance.MyPlayer.Manager.networkView.RPC("UpdateRank",RPCMode.All,CurLevel);
                     PlayerPrefs.GetString("PlayerScore" + NetworkManager.Instance.PlayerName, Exp);
                     Debug.Log("RankManager Getting Int");
                 }
 
             }
 }
 }