datagridview绑定实体类后添加新行

 BindingSource bdSource = new BindingSource();//全局变量

/// <summary>
/// 获取线的名称
/// </summary>
private void GetLineName()
{
var models = _maintenanceBLL.GetLineModels();
bdSource.DataSource = models;
dgvLineName.DataSource = bdSource;
//dgvLineName.DataSource = models;
dgvLineNameSet();
}

　　

/// <summary>
        /// 线名称新增
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnlineAdd_Click(object sender, EventArgs e)
        {
            bdSource.AddNew();
        }