RowUpdating Event
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OleDbDataAdapter.RowUpdating Event

Occurs during Update before a command is executed against the data source. The attempt to update is made. Therefore, the event occurs.

Namespace: System.Data.OleDb
Assembly: System.Data (in

event OleDbRowUpdatingEventHandler^ RowUpdating {
	void add (OleDbRowUpdatingEventHandler^ value);
	void remove (OleDbRowUpdatingEventHandler^ value);

/** @event */
public void add_RowUpdating (OleDbRowUpdatingEventHandler value)

/** @event */
public void remove_RowUpdating (OleDbRowUpdatingEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

When you use Update, there are two events that occur per 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 the RowUpdating and RowUpdated events being used.

No code example is currently available or this language may not be supported.
using System;
using System.Data;
using System.Data.OleDb;

class Class1
    static void Main()
        string x = "Provider=SQLOLEDB;Data Source=(local);Integrated Security=SSPI;Initial Catalog=Northwind";

    public static void CreateDataAdapter(
        string connectionString)
        using (OleDbConnection connection = new OleDbConnection(connectionString))
            OleDbDataAdapter adapter = new OleDbDataAdapter(
                "SELECT * FROM Customers WHERE CustomerID = 'ALFKI'", connection);

            adapter.InsertCommand = new OleDbCommand(
                "INSERT INTO Customers (CustomerID, CompanyName) VALUES(?, ?)", 

                "@CustomerID", OleDbType.VarChar, 5, "CustomerID");
                "@CompanyName", OleDbType.VarChar, 30, "CompanyName");


            DataSet custDS = new DataSet();
            adapter.Fill(custDS, "Customers");

            DataRow custRow = custDS.Tables["Customers"].NewRow();
            custRow["CustomerID"] = "NEWCO";
            custRow["CompanyName"] = "New Company";

            // add handlers
            adapter.RowUpdating += new OleDbRowUpdatingEventHandler(OnRowUpdating);
            adapter.RowUpdated += new OleDbRowUpdatedEventHandler(OnRowUpdated);

            adapter.Update(custDS, "Customers");

            // remove handlers
            adapter.RowUpdating -= new OleDbRowUpdatingEventHandler(OnRowUpdating);
            adapter.RowUpdated -= new OleDbRowUpdatedEventHandler(OnRowUpdated);

            foreach (DataRow row in custDS.Tables["Customers"].Rows)
                if (row.HasErrors)

    protected static void OnRowUpdating(object sender, 
        OleDbRowUpdatingEventArgs args)
        if (args.StatementType == StatementType.Insert)
            System.IO.TextWriter writer = System.IO.File.AppendText("Inserts.log");
            writer.WriteLine("{0: Customer {1 Inserted.", 
                DateTime.Now, args.Row["CustomerID"]);

    protected static void OnRowUpdated(object sender, OleDbRowUpdatedEventArgs args)
        if (args.Status == UpdateStatus.ErrorsOccurred)
            args.Row.RowError = args.Errors.Message;
            args.Status = UpdateStatus.SkipCurrentRow;

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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