RowUpdated

This event is raised when row(s) have been updated by the Update() method.

Declaration

// C#
public event OracleRowUpdatedEventHandler RowUpdated;

Event Data

The event handler receives an OracleRowUpdatedEventArgs object which exposes the following properties containing information about the event.

Command

The OracleCommand executed during the Update.
Errors (inherited from RowUpdatedEventArgs)

The exception, if any, is generated during the Update.
RecordsAffected (inherited from RowUpdatedEventArgs)

The number of rows modified, inserted, or deleted by the execution of the Command.
Row (inherited from RowUpdatedEventArgs)

The DataRow sent for Update.
StatementType (inherited from RowUpdatedEventArgs)

The type of SQL statement executed.
Status (inherited from RowUpdatedEventArgs)

The UpdateStatus of the Command.
TableMapping (inherited from RowUpdatedEventArgs)

The DataTableMapping used during the Update.

Example

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

// C#

using System;
using System.Data;
using Oracle.DataAccess.Client;

class RowUpdatedSample
{
  // Event handler for RowUpdating event
  protected static void OnRowUpdating(object sender,
                                      OracleRowUpdatingEventArgs e)
  {
    Console.WriteLine("Row updating.....");
    Console.WriteLine("Event arguments:");
    Console.WriteLine("Command Text: " + e.Command.CommandText);
    Console.WriteLine("Command Type: " + e.StatementType);
    Console.WriteLine("Status: " + e.Status);
  }

  // Event handler for RowUpdated event
  protected static void OnRowUpdated(object sender,
                                     OracleRowUpdatedEventArgs e)
  {
    Console.WriteLine("Row updated.....");
    Console.WriteLine("Event arguments:");
    Console.WriteLine("Command Text: " + e.Command.CommandText);
    Console.WriteLine("Command Type: " + e.StatementType);
    Console.WriteLine("Status: " + e.Status);
  }

  static void Main()
  {
    string constr = "User Id=scott;Password=tiger;Data Source=oracle";
    string cmdstr = "SELECT EMPNO, ENAME, SAL FROM EMP";

    // Create the adapter with the selectCommand txt and the
    // connection string
    OracleDataAdapter adapter = new OracleDataAdapter(cmdstr, constr);

    // Create the builder for the adapter to automatically generate
    // the Command when needed
    OracleCommandBuilder builder = new OracleCommandBuilder(adapter);

    // Create and fill the DataSet using the EMP
    DataSet dataset = new DataSet();
    adapter.Fill(dataset, "EMP");

    // Get the EMP table from the dataset
    DataTable table = dataset.Tables["EMP"];

    // Indicate DataColumn EMPNO is unique
    // This is required by the OracleCommandBuilder to update the EMP table
    table.Columns["EMPNO"].Unique = true;

    // Get the first row from the EMP table
    DataRow row = table.Rows[0];

    // Update the salary
    double sal = double.Parse(row["SAL"].ToString());
    row["SAL"] = sal + .01;

    // Set the event handlers for the RowUpdated and the RowUpdating event
    // the OnRowUpdating() method will be triggered before the update, and
    // the OnRowUpdated() method will be triggered after the update
    adapter.RowUpdating += new OracleRowUpdatingEventHandler(OnRowUpdating);
    adapter.RowUpdated += new OracleRowUpdatedEventHandler(OnRowUpdated);

    // Now update the EMP using the adapter
    // The OracleCommandBuilder will create the UpdateCommand for the
    // adapter to update the EMP table
    // The OnRowUpdating() and the OnRowUpdated() methods will be triggered
    adapter.Update(dataset, "EMP");
  }
}

See Also: