OracleRowUpdatedEventArgs Class

 

Provides data for the RowUpdated event. This class cannot be inherited.

Namespace:   System.Data.OracleClient
Assembly:  System.Data.OracleClient (in System.Data.OracleClient.dll)

System.Object
  System.EventArgs
    System.Data.Common.RowUpdatedEventArgs
      System.Data.OracleClient.OracleRowUpdatedEventArgs

Public NotInheritable Class OracleRowUpdatedEventArgs
	Inherits RowUpdatedEventArgs

NameDescription
System_CAPS_pubmethodOracleRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

Initializes a new instance of the OracleRowUpdatedEventArgs class.

NameDescription
System_CAPS_pubpropertyCommand

Gets or sets the OracleCommand executed when Update is called.

System_CAPS_pubpropertyErrors

Gets any errors generated by the .NET Framework data provider when the Command was executed.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubpropertyRecordsAffected

Gets the number of rows changed, inserted, or deleted by execution of the SQL statement.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubpropertyRow

Gets the DataRow sent through an Update.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubpropertyRowCount

Gets the number of rows processed in a batch of updated records.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubpropertyStatementType

Gets the type of SQL statement executed.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubpropertyStatus

Gets the UpdateStatus of the Command property.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubpropertyTableMapping

Gets the DataTableMapping sent through an Update.(Inherited from RowUpdatedEventArgs.)

NameDescription
System_CAPS_pubmethodCopyToRows(DataRow())

Copies references to the modified rows into the provided array.(Inherited from RowUpdatedEventArgs.)

System_CAPS_pubmethodCopyToRows(DataRow(), Int32)

Copies references to the modified rows into the provided array. (Inherited from RowUpdatedEventArgs.)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

The RowUpdated event is raised when an Update to a row is completed.

When using Update, there are two events that occur for each data row updated. The order of execution is as follows:

  1. The values in the DataRow are moved to the parameter values.

  2. The OnRowUpdating event is raised.

  3. The command executes.

  4. If the command is set to FirstReturnedRecord, the first returned result is placed in the DataRow.

  5. If there are output parameters, they are placed in the DataRow.

  6. The OnRowUpdated event is raised.

  7. AcceptChanges is called.

The following example shows how to use both the RowUpdating and RowUpdated events.

The RowUpdating event returns this output:

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

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 Shared Sub OnRowUpdating(sender As Object, e As OracleRowUpdatingEventArgs)
        PrintEventArgs(e)
    End Sub 'OnRowUpdating

    'Handler for RowUpdated event.
    Private Shared Sub OnRowUpdated(sender As Object, e As OracleRowUpdatedEventArgs)
        PrintEventArgs(e)
    End Sub 'OnRowUpdated

    '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 OracleCommandBuilder = 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 'PrintEventArgs


    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 'PrintEventArgs
End Class 'Form1

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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