为什么实现不了删除功能
private void button1_Click(object sender, EventArgs e)
{
dataGridView1.Rows.RemoveAt(dataGridView1.CurrentRow.Index);
conn = new SqlConnection(connString);
SqlDataAdapter sda = new SqlDataAdapter("select * from dbo.Personal", conn);
DataSet ds = new DataSet();
sda.Fill(ds, "dbo.Personal");
dataGridView1.AutoGenerateColumns = true;
dataGridView1.DataSource = ds.Tables[0];
}
该按钮为什么实现不了删除功能?