How do I add the contents of a list to a listview with both of them being from different form

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C#

ListView

I am trying to the contents of my List to a listView. My list is a list of objects and is in a separate form from my ListView. Here's is a snippet of my code

<pre>public partial class Form1 : Form
    {
       
        String path = "HighScore.txt";
         LeaderBoard score=new LeaderBoard();
        public List<HighScore> OrdereadList = new List<HighScore>();
        List<HighScore> highScores = new List<HighScore>();

public void add()
{
int count=0;
 foreach (var highScore in OrdereadList)
            {
                count++;
                Console.WriteLine("Adding stuff");
                addItem(count.ToString(), highScore.Name, highScore.Level, highScore.Result, highScore.Time.ToString());
            }
}



        }
        public void addItem(string num,string name,string level, string result,string time)
        {
            ListViewItem number = new ListViewItem(num);
            ListViewItem.ListViewSubItem rowName = new ListViewItem.ListViewSubItem(number, name);
            ListViewItem.ListViewSubItem rowLevel = new ListViewItem.ListViewSubItem(number, level);
            ListViewItem.ListViewSubItem rowResult = new ListViewItem.ListViewSubItem(number, result);
            ListViewItem.ListViewSubItem rowTime= new ListViewItem.ListViewSubItem(number, time);

               
            number.SubItems.Add(rowName);
            number.SubItems.Add(rowLevel);
            number.SubItems.Add(rowResult);
            number.SubItems.Add(rowTime);

            //score.lstLeaderBoard.Items.Add(number);

        }

And here's is my other form LeaderBoard and my attempt

public partial class LeaderBoard : Form
    {

        Form1 form;
        public LeaderBoard(Form1 frm)
        {
            InitializeComponent();
            form = frm;
        }
       
        public void addItem(string num, string name, string level, string result, string time)
        {
            ListViewItem number = new ListViewItem(num);
            ListViewItem.ListViewSubItem rowName = new ListViewItem.ListViewSubItem(number, name);
            ListViewItem.ListViewSubItem rowLevel = new ListViewItem.ListViewSubItem(number, level);
            ListViewItem.ListViewSubItem rowResult = new ListViewItem.ListViewSubItem(number, result);
            ListViewItem.ListViewSubItem rowTime = new ListViewItem.ListViewSubItem(number, time);


            number.SubItems.Add(rowName);
            number.SubItems.Add(rowLevel);
            number.SubItems.Add(rowResult);
            number.SubItems.Add(rowTime);

            lstLeaderBoard.Items.Add(number);

        }

        private void LeaderBoard_Load(object sender, EventArgs e)
        {
            int count=0;
            foreach(var item in form.OrdereadList)
            {
                count++;
                addItem(count.ToString(),item.Name,item.Level,item.Result,item.Time.ToString());
               
            }


            
        }

        
           

    }

What I have tried:

After searching online, I think I have discovered the cause of my problem during my several attempts. Any time I'm implementing my code, I create a new instance of either the LeaderBoard class or the Form1 class; one of the things I tried to fix was
lang="C#">

Form1 form;
public LeaderBoard(Form1 frm)
{
    InitializeComponent();
    form = frm;
}

But it didn't seem to work. I also tried placing the method that generated the items in the List for Form1 into a constructor method and then creating a new instance of form1 in my leaderBoard class, but it didn't work. I also figured since my Leader board will always be blank, I could create a new instance and add an item to it, but this didn't seem to work either.