"error CS0116: A namespace cannot directly contain members such as fields or methods" in Unity

Question

I am working on a game in unity and in the script for controlling the buttons in the game mode menu. While writing this error occurred: error CS0116: A namespace cannot directly contain members such as fields or methods and i have no idea whats wrong. Heres the code:

using System.Collections.Generic;
using UnityEngine;

public class SecondaryMenuControl : MonoBehaviour
{

public bool isSurvival;  
public bool isSelectLevel;
public bool isGoBack;


} 

 // Start is called before the first frame update
    void Start()
    {

void OnMouseUp(){
    if(isSurvival)
    {
        SceneManager.LoadScene(MainScene);
    }

    if (isSurvival)
    {
        SceneManager.LoadScene(SelectLevelMenu);
    }

    if (isGoBack)
    {
        SceneManager.LoadScene(IntroMenu);  
    }

    }

    // Update is called once per frame
    void Update()
    {

    }
}

I hope somebody can help me.

Regards, Keno

Answer 1

Remove the stray bracket;

public class SecondaryMenuControl : MonoBehaviour
{

public bool isSurvival;  
public bool isSelectLevel;
public bool isGoBack;


} // remove this one!

// rest of the file

The error basically saids 'You defined some properties/fields/methods in a namespace' which you of course can't do. They all belong inside a class.

edit: this should be your output:

public class SecondaryMenuControl : MonoBehaviour
{

public bool isSurvival;  
public bool isSelectLevel;
public bool isGoBack;

private void OnMouseUp(){
    if(isSurvival)
    {
        SceneManager.LoadScene(MainScene);
    }

    if (isSurvival)
    {
        SceneManager.LoadScene(SelectLevelMenu);
    }

    if (isGoBack)
    {
        SceneManager.LoadScene(IntroMenu);  
    }

} // end of OnMouseUp
} // end of class

make sure you match an opening bracket with a closing one.