我不断收到Error 1064
有这样的文字:MySQL错误1064在C#与XAMPP
An unhandled exception of type 'MySql.Data.MySqlClient.MySqlException' occurred in MySql.Data.dll Additional information: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '[Tisch 1]' at line 1
这是我的编码:
using MySql.Data.MySqlClient;
namespace Tischreservierung1000
{
public partial class Reservierung : Form
{
private MySqlConnection con;
private MySqlCommand sql;
private MySqlConnection connection = new MySqlConnection();
public Reservierung()
{
InitializeComponent();
String connect = "Server=localhost;Port=3306;Database=tischreservierer;uid=Tischreservierer;";
con = new MySqlConnection(connect);
//Prüfe ob Tisch 1 schon reserviert ist
con.Open();
sql = con.CreateCommand();
sql.CommandText = "select * from [Tisch 1];";
MySqlDataReader reader = sql.ExecuteReader();
while (reader.Read())
{
if (reader.GetString(3) == "Reserviert") { T1Res = false; } else { }
if (T1Res == false) { T1R.BackgroundImage = null ; T1R.BackColor = Color.DarkRed; T1S1R.BackColor = Color.DarkRed; if (reader.GetInt32(2) == 2) { T1S2R.BackColor = Color.DarkRed; } } else { }
}
}
//Prüfe ob Tisch 2 schon reserviert ist
sql = con.CreateCommand();
sql.CommandText = "select * from `Tisch 2`;";
reader = sql.ExecuteReader();
while (reader.Read())
{
if (reader.GetString(3) == "Reserviert") { T2Res = false; } else { }
if (T2Res == false) { T2R.BackgroundImage = null; T2R.BackColor = Color.DarkRed; T2S1R.BackColor = Color.DarkRed; if (reader.GetInt32(2) == 2) { T2S2R.BackColor = Color.DarkRed; } } else { }
}
}
错误在此行中显示出来:
MySqlDataReader reader = sql.ExecuteReader();
他为什么试图与MariaDB建立连接? 我之前使用过Access数据库,它以这种方式工作。
它帮助反向。但现在我得到以下错误: 已经有一个开放的DataReader与此连接关联,必须先关闭它。
错误代码行@ “蒂施2”:
读者= sql.ExecuteReader();
(IVE添加在其上方)
感谢您的帮助
在mysql中,分隔符是反引号,用反引号替换括号'“select * from Tisch 1”;“' – Mihai
谢谢,帮助!但即时通过我的代码我发布的下一个错误: – Dam1X