Convert Class To Stream

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C#

Unity

Unity3D

i am trying to save gamesdata in file but in gives error cannot Convert GameData to System.To.Stream

Severity Code Description Project File Line
Error CS1503 Argument 1: cannot convert from 'GameData' to 'System.IO.Stream' Assembly-CSharp-vs GameControle.cs 43


......... Help Me ........

using UnityEngine;
using System.Collections;
using System;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary; 


public class GameControler : MonoBehaviour {

    public static GameControler instance;

    private GameData data;

    public int cruntSchore;
    public int cruntLevel;

    public bool IsGameStartedFirstTime;
    public bool IsMusicOn;

    public int HighSchore;

    public bool[] Levels;

    // Use this for initialization
    void Start () {
	
	}


    public void Save() {
        FileStream file = null;
        try {
            BinaryFormatter bf = new BinaryFormatter();
            file = File.Create(Application.persistentDataPath + "/Gamedata.data");
            if(data != null){
                data.setHighSchore(HighSchore);
                data.setLevels(Levels);
                data.SetIsGameStartedFirstTime(IsGameStartedFirstTime);
                data.setIsMusicOn(IsMusicOn);
                bf.Serialize(data, file); //cannot Convert GameData to System.To.Stream 
            }
        } catch(Exception e) { }
        finally {
            file.Close();
        };

    }

[Serializable]
class GameData {
    private bool IsGameStartedFirstTime;
    private bool IsMusicOn;
    
    private int HighSchore;

    private bool[] Levels;

    public void SetIsGameStartedFirstTime(bool IsGameStartedFirstTime)
    {
        this.IsGameStartedFirstTime = IsGameStartedFirstTime;
    }
    public bool GetIsGameStartedFirstTime()
    {
        return IsGameStartedFirstTime;
    }
    public void setIsMusicOn(bool IsMusicOn)
    {
        this.IsMusicOn = IsMusicOn;
    }

    public bool getIsMusicOn()
    {
        return IsMusicOn;
    }

    public void setHighSchore(int HighSchore)
    {
        this.HighSchore = HighSchore;
    }

    public int getHighSchore()
    {
        return HighSchore;
    }

    public void setLevels(bool[] Levels)
    {
        this.Levels = Levels;
    }

    public bool[] getLevels()
    {
        return Levels;
    }
}