从其他方法调用时不添加行

Question

我试图将行添加到通过不同方法调用的datagridview中，但是它不起作用。然后，我尝试在Click事件中触发添加行，并且行得通。

有人可以给我提示或提示来解决此问题吗？

表格1：

    private void btnTag_Click(object sender, EventArgs e)
    {
        var type = Type.GetType("Payroll." + dynamic_form);
        dynamic form = Activator.CreateInstance(type) as Form;
        form.GetEmployeeID(empid);
        this.Close();

    }

表格2：

public void GetEmployeeID(Dictionary<int, List<int>> emp_id)
{
    //this is the add rows it's not working
    dgvTaggedEmployee.Rows.Add("sample", "sample");

    employee_id = emp_id;

    foreach (KeyValuePair<int, List<int>> item in employee_id)
    {
        foreach (int value in item.Value)
        {
            if (dbcon.OpenCon() == true)
            {
                string query = "SELECT * from tbl_payroll_employee_basic where payroll_employee_id="+value.ToString()+"";
                cmd = new MySqlCommand(query, dbcon.con);
                read = cmd.ExecuteReader();
                read.Read();
                dgvTaggedEmployee.Rows.Add(read["payroll_employee_last_name"].ToString() + ", " + read["payroll_employee_first_name"].ToString() + read["payroll_employee_middle_name"].ToString(), "0");
                MessageBox.Show(value.ToString(), read["payroll_employee_last_name"].ToString() + ", " + read["payroll_employee_first_name"].ToString() + read["payroll_employee_middle_name"].ToString());
                dbcon.CloseCon();
            }
        }
    }
}