C# 使用DataGridView控件显示数据库中的数据

private void AllSearch_Load(object sender, EventArgs e)
{
        MySqlConnection conn;
        string constr = "server=localhost;database=数据库名;uid=账号;pwd=密码;";
        conn = new MySqlConnection(constr);
        conn.Open();

        MySqlCommand co = new MySqlCommand("select * from 表名;", conn);


        MySqlDataAdapter adapt = new MySqlDataAdapter();

        adapt.SelectCommand = co;

        DataSet ds = new DataSet();

        adapt.Fill(ds, "t");    //第二个参数:表名，随便取

        dataGridView1.DataSource = ds.Tables["t"];

        conn.Close();
}