c# - Cross-thread operation not valid: Control 'dataGridView1' accessed from a thread other than the thread it was created on

I have a Windows form which is taking forever to load data into my datagridview.

I keep getting the error in this line:

    dataGridView1.Rows.Add(row);

Cross-thread operation not valid: Control 'dataGridView1' accessed from a thread other than the thread it was created on.

Here is my code:

    public List _checked = new List();

    private void getBarcodProperty()
    {                

        string query = "select Name from RfidUnic where Barcode = @barcode";

        while (true)
        {
            while (_checked.Count > 0)
            {
                SQLiteCommand cmd = new SQLiteCommand(query, sqliteConnection);
                cmd.Parameters.AddWithValue("@barcode", _checked[0]);
                sqliteConnection.Open();


                SQLiteDataReader da = cmd.ExecuteReader();

                if (da.Read())
                {
                    if (!da.IsDBNull(0))
                    {
                        string[] row = new string[] { da[0].ToString(), "1", _checked[0] };
                        dataGridView1.Rows.Add(row);
                        _checked.RemoveAt(0);
                    }

                }
                else
                {
                    string[] row = new string[] { "empty", "1", _checked[0] };
                    dataGridView1.Rows.Add(row);
                    _checked.RemoveAt(0);
                }

                sqliteConnection.Close();
            }

        }
    }

Please show me where I am going wrong

Thanks