int row = DataGridView1.SelectedRows.Count;
            if (MessageBox.Show("确认删除选中的" + row.ToString() + "条记录吗？", "请确认",MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                while (row > 0)
                {
                    ((DataRowView)DataGridView1.SelectedRows[0].DataBoundItem).Row.Delete();
                    row -= 1;
                }
            }