OracleRowUpdatedEventArgs Clase

Definición

Proporciona datos para el evento RowUpdated.Provides data for the RowUpdated event. Esta clase no puede heredarse.This class cannot be inherited.

public ref class OracleRowUpdatedEventArgs sealed : System::Data::Common::RowUpdatedEventArgs
public sealed class OracleRowUpdatedEventArgs : System.Data.Common.RowUpdatedEventArgs
type OracleRowUpdatedEventArgs = class
    inherit RowUpdatedEventArgs
Public NotInheritable Class OracleRowUpdatedEventArgs
Inherits RowUpdatedEventArgs
Herencia
OracleRowUpdatedEventArgs

Ejemplos

En el ejemplo siguiente se muestra cómo utilizar los RowUpdating eventos RowUpdated y.The following example shows how to use both the RowUpdating and RowUpdated events.

El RowUpdating evento devuelve este resultado:The RowUpdating event returns this output:

Event Arguments: (command=OracleCommand commandType=2status=0)

El RowUpdated evento devuelve este resultado:The RowUpdated event returns this output:

Event Arguments: (command= OracleCommend commandType=2 recordsAffected=1 row=System.Data.DataRow[37] status=0)

// handler for RowUpdating event
 private static void OnRowUpdating(object sender, OracleRowUpdatingEventArgs e) {
    PrintEventArgs(e);
 }
 
 //Handler for RowUpdated event.
 private static void OnRowUpdated(object sender, OracleRowUpdatedEventArgs e) {
    PrintEventArgs(e);
 }
 
 public static int Main(String[] args) {
    const string CONNECTION_STRING = "Data Source=Oracle8i;Integrated Security=yes";
    const string SELECT_ALL = "SELECT * FROM Scott.Emp";
 
    //Create DataAdapter.
    OracleDataAdapter rAdapter = new OracleDataAdapter(SELECT_ALL, CONNECTION_STRING);
    OracleCommandBuilder cb = new OracleCommandBuilder(rAdapter);
 
    //Create and fill DataSet (Select only first 5 rows.).
    DataSet rDataSet = new DataSet();
    rAdapter.Fill(rDataSet, 0, 5, "Table");
 
    //Modify DataSet.
    DataTable rTable = rDataSet.Tables["Table"];
    rTable.Rows[0][1] = "DYZY";
 
    //Add handlers.
    rAdapter.RowUpdating += new OracleRowUpdatingEventHandler( OnRowUpdating );
    rAdapter.RowUpdated += new OracleRowUpdatedEventHandler( OnRowUpdated );
 
    //Update--this operation fires two events (RowUpdating and RowUpdated) for each changed row. 
    rAdapter.Update(rDataSet, "Table");
 
    //Remove handlers.
    rAdapter.RowUpdating -= new OracleRowUpdatingEventHandler( OnRowUpdating );
    rAdapter.RowUpdated -= new OracleRowUpdatedEventHandler( OnRowUpdated );
    return 0;
 }
 
 private static void PrintEventArgs(OracleRowUpdatingEventArgs args) {
    Console.WriteLine("OnRowUpdating");
    Console.WriteLine("  event args: ("+
           " command=" + args.Command + 
           " commandType=" + args.StatementType + 
           " status=" + args.Status + ")");
 }
 
 private static void PrintEventArgs(OracleRowUpdatedEventArgs args) {
    Console.WriteLine("OnRowUpdated");
    Console.WriteLine( "  event args: ("+
           " command=" + args.Command +
           " commandType=" + args.StatementType + 
           " recordsAffected=" + args.RecordsAffected + 
           " status=" + args.Status + ")" );
 }
    'Handler for RowUpdating event.
    Private Shared Sub OnRowUpdating(sender As Object, e As OracleRowUpdatingEventArgs)
        PrintEventArgs(e)
    End Sub

    'Handler for RowUpdated event.
    Private Shared Sub OnRowUpdated(sender As Object, e As OracleRowUpdatedEventArgs)
        PrintEventArgs(e)
    End Sub
    
    'Entry point which delegates to C-style main Private Function.
    Public Overloads Shared Sub Main()
        System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs())
    End Sub
    
    Overloads Public Shared Function Main(args() As String) As Integer
        Const CONNECTION_STRING As String = "Data Source=Oracle8i;Integrated Security=yes"
        Const SELECT_ALL As String = "SELECT * FROM Scott.Emp"
        
        'Create DataAdapter.
        Dim rAdapter As New OracleDataAdapter(SELECT_ALL, CONNECTION_STRING)
        Dim cb As New OracleCommandBuilder(rAdapter)
        
        'Create and fill DataSet (Select only first 5 rows.).
        Dim rDataSet As New DataSet()
        rAdapter.Fill(rDataSet, 0, 5, "Table")
        
        'Modify DataSet.
        Dim rTable As DataTable = rDataSet.Tables("Table")
        rTable.Rows(0)(1) = "DYZY"
        
        'Add handlers.
        AddHandler rAdapter.RowUpdating, AddressOf OnRowUpdating
        AddHandler rAdapter.RowUpdated, AddressOf OnRowUpdated
        
        'Update--this operation fires two events (RowUpdating and RowUpdated) for each changed row.
        rAdapter.Update(rDataSet, "Table")
        
        'Remove handlers.
        RemoveHandler rAdapter.RowUpdating, AddressOf OnRowUpdating
        RemoveHandler rAdapter.RowUpdated, AddressOf OnRowUpdated
        Return 0
    End Function 'Main
    
    
    Overloads Private Shared Sub PrintEventArgs(args As OracleRowUpdatingEventArgs)
        Console.WriteLine("OnRowUpdating")
        Console.WriteLine("  event args: (" & " command=" & args.Command.CommandText & _
                        " commandType=" & args.StatementType & " status=" & args.Status & ")")
    End Sub
    
    
    Overloads Private Shared Sub PrintEventArgs(args As OracleRowUpdatedEventArgs)
        Console.WriteLine("OnRowUpdated")
        Console.WriteLine("  event args: (" & " command=" & args.Command.CommandText & _
                        " commandType=" & args.StatementType & " recordsAffected=" & _
                        args.RecordsAffected & " status=" & args.Status & ")")
    End Sub
End Class

Comentarios

El RowUpdated evento se genera cuando se Update completa un para una fila.The RowUpdated event is raised when an Update to a row is completed.

Cuando se Updateusa, hay dos eventos que se producen para cada fila de datos actualizada.When using Update, there are two events that occur for each data row updated. El orden de ejecución es el siguiente:The order of execution is as follows:

  1. Los valores de DataRow se mueven a los valores de parámetro.The values in the DataRow are moved to the parameter values.

  2. Se genera el evento OnRowUpdating.The OnRowUpdating event is raised.

  3. Se ejecuta el comando.The command executes.

  4. Si el comando se establece en FirstReturnedRecord, el primer resultado devuelto se coloca DataRowen.If the command is set to FirstReturnedRecord, the first returned result is placed in the DataRow.

  5. Si hay parámetros de salida, se colocan en DataRowel.If there are output parameters, they are placed in the DataRow.

  6. Se genera el evento OnRowUpdated.The OnRowUpdated event is raised.

  7. Se llama a AcceptChanges.AcceptChanges is called.

Constructores

OracleRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

Inicializa una nueva instancia de la clase OracleRowUpdatedEventArgs.Initializes a new instance of the OracleRowUpdatedEventArgs class.

Propiedades

Command

Obtiene o establece el objeto OracleCommand que se ejecuta cuando se llama al método Update(DataSet).Gets or sets the OracleCommand executed when Update(DataSet) is called.

Errors

Obtiene todos los errores generados por el proveedor de datos de .NET Framework al ejecutar la propiedad Command.Gets any errors generated by the .NET Framework data provider when the Command was executed.

(Heredado de RowUpdatedEventArgs)
RecordsAffected

Obtiene el número de filas modificadas, insertadas o eliminadas por la ejecución de la instrucción SQL.Gets the number of rows changed, inserted, or deleted by execution of the SQL statement.

(Heredado de RowUpdatedEventArgs)
Row

Obtiene la clase DataRow que se envió a través de un método Update(DataSet).Gets the DataRow sent through an Update(DataSet).

(Heredado de RowUpdatedEventArgs)
RowCount

Obtiene el número de filas procesadas en un lote de registros actualizados.Gets the number of rows processed in a batch of updated records.

(Heredado de RowUpdatedEventArgs)
StatementType

Obtiene el tipo de instrucción SQL ejecutada.Gets the type of SQL statement executed.

(Heredado de RowUpdatedEventArgs)
Status

Obtiene UpdateStatus de la propiedad Command.Gets the UpdateStatus of the Command property.

(Heredado de RowUpdatedEventArgs)
TableMapping

Obtiene la clase DataTableMapping que se envió a través de un método Update(DataSet).Gets the DataTableMapping sent through an Update(DataSet).

(Heredado de RowUpdatedEventArgs)

Métodos

CopyToRows(DataRow[])

Copia referencias a las filas modificadas en la matriz proporcionada.Copies references to the modified rows into the provided array.

(Heredado de RowUpdatedEventArgs)
CopyToRows(DataRow[], Int32)

Copia referencias a las filas modificadas en la matriz proporcionada.Copies references to the modified rows into the provided array.

(Heredado de RowUpdatedEventArgs)
Equals(Object)

Determina si el objeto especificado es igual que el objeto actual.Determines whether the specified object is equal to the current object.

(Heredado de Object)
GetHashCode()

Sirve como función hash predeterminada.Serves as the default hash function.

(Heredado de Object)
GetType()

Obtiene el Type de la instancia actual.Gets the Type of the current instance.

(Heredado de Object)
MemberwiseClone()

Crea una copia superficial del objeto Object actual.Creates a shallow copy of the current Object.

(Heredado de Object)
ToString()

Devuelve una cadena que representa el objeto actual.Returns a string that represents the current object.

(Heredado de Object)

Se aplica a