Game Manager

using UnityEngine;
using System.Collections;
using System;
using UnityEngine.UI;



public class GameManager : MonoBehaviour {


    public static string PlayerName, PlayerSchool;
    public static long PlayerID;
    public static int PlayerScore;

    public int IdSize = 0;
    public int ApplicationLevel;

    public GameObject InputName;
    public GameObject InputID;
    public GameObject InputSchoolName;

    // Use this for initialization
    void Start()
    {

        PlayerName = "";
        PlayerID = 0;
        PlayerSchool = "";

    }



    public void OnClick()
    {


       string tempID = InputID.GetComponent<Text>().text;
       bool isNumeric = long.TryParse(tempID, out PlayerID);
       long InputNameLength = InputName.GetComponent<Text>().text.Length;
       long InputSchoolLenth = InputSchoolName.GetComponent<Text>().text.Length;



        // Validation

       if (isNumeric && tempID.Length == IdSize && InputNameLength > 0 && InputSchoolLenth > 0 && InputName.GetComponent<Text>().text != "Please Type in Correct Format" && InputSchoolName.GetComponent<Text>().text != "Please Type in Correct Format")
       {
           PlayerID = Convert.ToInt64(tempID);
           PlayerName = InputName.GetComponent<Text>().text;
           PlayerSchool = InputSchoolName.GetComponent<Text>().text;
           Application.LoadLevel(ApplicationLevel);
       }

       if (tempID.Length > IdSize || tempID.Length < IdSize || !isNumeric || InputID.GetComponent<Text>().text == "Please Type Correct ID")
       {
           InputID.GetComponent<Text>().text = "Please Type Correct ID";
           InputID.GetComponent<Text>().color = Color.red;
       }

       if (InputNameLength == 0 || InputName.GetComponent<Text>().text == "Please Type in Correct Format" )
       {
           InputName.GetComponent<Text>().text = "Please Type in Correct Format";
           InputName.GetComponent<Text>().color = Color.red;
       }

       if (InputSchoolLenth == 0 || InputSchoolName.GetComponent<Text>().text == "Please Type in Correct Format")
       {
           InputSchoolName.GetComponent<Text>().text = "Please Type in Correct Format";
           InputSchoolName.GetComponent<Text>().color = Color.red;
       }




        Debug.Log(PlayerName);
        Debug.Log(PlayerID);
        Debug.Log(PlayerSchool);


    }
}