我不斷收到Error 1064
有這樣的文字:MySQL錯誤1064在C#與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
這是我的編碼:
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 { }
}
}
錯誤在此行中顯示出來:
MySqlDataReader reader = sql.ExecuteReader();
他爲什麼試圖與MariaDB建立連接? 我之前使用過Access數據庫,它以這種方式工作。
它幫助反向。但現在我得到以下錯誤: 已經有一個開放的DataReader與此連接關聯,必須先關閉它。
錯誤代碼行@ 「蒂施2」:
讀者= sql.ExecuteReader();
(IVE添加在其上方)
感謝您的幫助
在mysql中,分隔符是反引號,用反引號替換括號'「select * from Tisch 1」;「' – Mihai
謝謝,幫助!但即時通過我的代碼我發佈的下一個錯誤: – Dam1X