OracleRowUpdatingEventArgs Class


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Provides data for the RowUpdating event.

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


Public NotInheritable Class OracleRowUpdatingEventArgs
	Inherits RowUpdatingEventArgs

System_CAPS_pubmethodOracleRowUpdatingEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

Initializes a new instance of the OracleRowUpdatingEventArgs class.


Gets or sets the OracleCommand to execute when performing the Update.


Gets any errors generated by the .NET Framework data provider when the Command executes.(Inherited from RowUpdatingEventArgs.)


Gets the DataRow that will be sent to the server as part of an insert, update, or delete operation.(Inherited from RowUpdatingEventArgs.)


Gets the type of SQL statement to execute.(Inherited from RowUpdatingEventArgs.)


Gets or sets the UpdateStatus of the Command property.(Inherited from RowUpdatingEventArgs.)


Gets the DataTableMapping to send through the Update.(Inherited from RowUpdatingEventArgs.)


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


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


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


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

The RowUpdating event is raised before an Update to a row.

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=2 status=0)

The RowUpdated event returns this output:

Event Arguments: (command=OracleCommand commandType=2 recordsAffected=1 row=DataRow[37] status=0)

'Handler for RowUpdating event.
Private Shared Sub OnRowUpdating(sender As Object, e As OracleRowUpdatingEventArgs)
End Sub 'OnRowUpdating

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

    '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("  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("  event args: (" & _
                    " command=" & _
                    args.Command.CommandText & _
                    " commandType=" & _
                    args.StatementType & _
                    " recordsAffected=" & _
                    args.RecordsAffected & _
                    " status=" & _
                    args.Status & _
End Sub 'PrintEventArgs

.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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