C#数据未插入数据库，我这样写有什么问题吗？

                    SqlConnection cn = new SqlConnection("server=" + ComName + ";pwd=;uid=sa;database=数据");
                    SqlCommand cmd = cn.CreateCommand();
                    try
                    {
                        cmd.CommandText = "insert 数据(时间,设备编号,数据源) values("+this.date.Text + this.time.Text+"," + devnumber1[k] + "," + a1 + ")";
                        cmd.ExecuteNonQuery();
                    }
                    catch
                    {

                    }
                    finally
                    {
                        cn.Close();
                    }

调试时的cmd.commamdtext=insert 数据(时间,设备编号,数据源) values(2021年04月27日15:20:00,30 33 32 33 38 38 33 35 34 30 37 32 34 35 35 39 35 38 31 34 ,07 10 00 00 00 4B 96 80 00 00 00 57 6A 85 62 75 AA 0A 96 0B 98 0C 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 02 00 03 00 04 00 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 77 D9 )

观察数据库里并没有数据，这是为什么？是sql语法有什么问题吗？程序有什么错误吗？还是数据库有什么问题？

这是我建的数据库

sql肯定有问题了，字符串和时间要用单引号扩起。而且日期格式不要加中文年月日，应该这种格式2021-04-27 15:20:00

cmd.CommandText = "insert 数据(时间,设备编号,数据源) values('" + this.date.Text +" "+ this.time.Text + "','" + devnumber1[k] + "','" + a1 + "')";