下面代码显示错误"未在计算机上注册:Mirosoft.Jet.OLEDB.4.0" try
            {
                OleDbConnection conn = new OleDbConnection();
                String connStr = "Provider = Mirosoft.Jet.OLEDB.4.0;Data Source=";
                connStr += @"Data\Student.mdb";
                MessageBox.Show("当前连接字符串为:\n" + connStr + "\n");
                conn.ConnectionString = connStr;
                conn.Open();                if (conn.State == ConnectionState.Open)
                {
                    MessageBox.Show("成功打开数据库连接");                }
                conn.Close();                if (conn.State == ConnectionState.Closed)
                {
                    MessageBox.Show("成功关闭数据库连接");
                }            }
            catch (Exception ex)
            {
                MessageBox.Show("数据库失败的原因可能是:\n"+ex.Message);
            }
        }