private void btnOk_Click(object sender, EventArgs e)
        {
            if(isCreateNew)
            {
                if (createData != null)
                {
                    createData.Invoke(getFormData());
                    this.Close();
                }
                return;
            } 

            if(updateData != null)
            {
                updateData.Invoke(getFormData());
                this.Close();
            }
        }