Add items in listview from another form

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C#

C#3.5

I am working in .Net Framework Compact Edition to design pocket pc application. I have 2 forms named frmData, frmMain. I have list view in frmMain. In list view I have 4 columns. ID, Room, Location, Time. I am getting value of ID, Room, location and time on frmData. I want to get that data and put it into listview of frmMain. On frmData there might be more than 1 records to be saved in list. When I click on btnUpdate on frmData, frmData will get closed and frmMain gets activated.

What I have tried:

This code is for frmData

public static ListViewItem item = new ListViewItem();

private void btnSave_Click(object sender, EventArgs e)
{
    DateTime dt = DateTime.Now.ToUniversalTime();
    string format = dt.ToString("yyyy-MM-dd HH:mm:ss");
    string[] row = { txtEPC.Text, cmbRoom.Text, txtShelf.Text, format };
    
    item.Text = txtEPC.Text;
    item.SubItems.Add(cmbRoom.Text);
    item.SubItems.Add(txtShelf.Text);
    item.SubItems.Add(format);
}

private void btnUpdateMain_Click(object sender, EventArgs e)
{
    this.close();
}

This code is for frmMain

private void frmMain_Activated(object sender, EventArgs e)
{
    try
    {
        listView1.Items.Clear();
        listView1.Items.Add(frmData.item);
    }
    catch (Exception)
    {
                    
    }   
}

I also tried with this one

frmMain objform1= new frmMain();
private void btnSave_Click(object sender, EventArgs e)
{
    DateTime dt = DateTime.Now.ToUniversalTime();
    string format = dt.ToString("yyyy-MM-dd HH:mm:ss");
    string[] row = { txtEPC.Text, cmbRoom.Text, txtShelf.Text, format };
    listViewItem lst = new ListViewItem;
    objform1.listview1.Items.add(lst); //changed modifier of listview1 to public
    
    item.Text = txtEPC.Text;
    item.SubItems.Add(cmbRoom.Text);
    item.SubItems.Add(txtShelf.Text);
    item.SubItems.Add(format);
}