Windows 应用程序中"无法更新"Access2000数据库

using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\\DB\\db1.mdb;Persist Security Info=True"))
{
    conn.Open();

    using (OleDbCommand cmd = new OleDbCommand("Insert INTO table1(name,age) VALUES('aaa',20)", conn))
    {
        cmd.ExecuteNonQuery();
    }

    conn.Close();
}