Código:
private void button_actualizar_Click(object sender, EventArgs e) { string insertar_disp = @"UPDATE `dispositivos` SET descripcion='descripcion1' WHERE id='1'; UPDATE `dispositivos` SET descripcion='descripcion2' WHERE id='2'; UPDATE `dispositivos` SET descripcion='descripcion3' WHERE id='3'; UPDATE `dispositivos` SET descripcion='descripcion4' WHERE id='4';"; connection = new MySqlConnection(MyConString); MySqlCommand con7 = new MySqlCommand(insertar_disp, connection); connection.Open(); con7.ExecuteNonQuery(); connection.Close(); }
Datos de MySQL es:
Código:
Me da error:CREATE TABLE IF NOT EXISTS `dispositivos` ( `ID` int(11) NOT NULL AUTO_INCREMENT, `nombre` varchar(6) COLLATE latin1_spanish_ci NOT NULL, `estado` tinyint(2) NOT NULL, `descripcion` varchar(20) COLLATE latin1_spanish_ci NOT NULL, PRIMARY KEY (`ID`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_spanish_ci AUTO_INCREMENT=5 ; -- -- (Evento) desencadenante `dispositivos` -- DROP TRIGGER IF EXISTS `pic_remoto`.`logestado`; DELIMITER // CREATE TRIGGER `pic_remoto`.`logestado` AFTER UPDATE ON `pic_remoto`.`dispositivos` FOR EACH ROW BEGIN DECLARE Rele1 INT; DECLARE Rele2 INT; DECLARE Rele3 INT; DECLARE Rele4 INT; SET Rele1 = (SELECT estado FROM dispositivos WHERE nombre LIKE 'RELE 1'); SET Rele2 = (SELECT estado FROM dispositivos WHERE nombre LIKE 'RELE 2'); SET Rele3 = (SELECT estado FROM dispositivos WHERE nombre LIKE 'RELE 3'); SET Rele4 = (SELECT estado FROM dispositivos WHERE nombre LIKE 'RELE 4'); INSERT INTO log(RELE_1, RELE_2, RELE_3, RELE_4, USUARIO, FECHA_HORA) VALUES (Rele1, Rele2, Rele3, Rele4, USER(), NOW()); END // DELIMITER ; -- -- Volcar la base de datos para la tabla `dispositivos` -- INSERT INTO `dispositivos` (`ID`, `nombre`, `estado`, `descripcion`) VALUES (1, 'RELÉ 1', 0, 'vacío'), (2, 'RELÉ 2', 0, 'vacío'), (3, 'RELÉ 3', 0, 'vacío'), (4, 'RELÉ 4', 0, 'vacío');
No se controló System.ArgumentNullException
Message="La clave no puede ser nula.\r\nNombre del parámetro: key"
Source="mscorlib"
ParamName="key"
StackTrace:
en System.Collections.Hashtable.get_Item(Object key)
en MySql.Data.MySqlClient.MySqlPoolManager.GetPool(My SqlConnectionStringBuilder settings)
en MySql.Data.MySqlClient.MySqlConnection.Open()
en MySQL12.Form1.button_actualizar_Click(Object sender, EventArgs e) en C:\Documents and Settings\Hunter\Mis documentos\Visual Studio 2008\Projects\MySQL12\MySQL12\Form1.cs:línea 157
en System.Windows.Forms.Control.OnClick(EventArgs e)
en System.Windows.Forms.Button.OnClick(EventArgs e)
en System.Windows.Forms.Button.OnMouseUp(MouseEventAr gs mevent)
en System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
en System.Windows.Forms.Control.WndProc(Message& m)
en System.Windows.Forms.ButtonBase.WndProc(Message& m)
en System.Windows.Forms.Button.WndProc(Message& m)
en System.Windows.Forms.Control.ControlNativeWindow.O nMessage(Message& m)
en System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message& m)
en System.Windows.Forms.NativeWindow.DebuggableCallba ck(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
en System.Windows.Forms.UnsafeNativeMethods.DispatchM essageW(MSG& msg)
en System.Windows.Forms.Application.ComponentManager. System.Windows.Forms.UnsafeNativeMethods.IMsoCompo nentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
en System.Windows.Forms.Application.ThreadContext.Run MessageLoopInner(Int32 reason, ApplicationContext context)
en System.Windows.Forms.Application.ThreadContext.Run MessageLoop(Int32 reason, ApplicationContext context)
en System.Windows.Forms.Application.Run(Form mainForm)
en MySQL12.Program.Main() en C:\Documents and Settings\Hunter\Mis documentos\Visual Studio 2008\Projects\MySQL12\MySQL12\Program.cs:línea 18
en System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
en System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
en Microsoft.VisualStudio.HostingProcess.HostProc.Run UsersAssembly()
en System.Threading.ThreadHelper.ThreadStart_Context( Object state)
en System.Threading.ExecutionContext.Run(ExecutionCon text executionContext, ContextCallback callback, Object state)
en System.Threading.ThreadHelper.ThreadStart()
InnerException: