Invoke the DataSet.RejectChanges to call the DataTable.RejectChanges method on all DataTable objects contained by the DataSet.

DataRow objects contained by the DataSet can each be set into edit mode by invoking the DataRow.BeginEdit method. After invoking the DataRow.EndEdit method, changes can be rejected by calling the DataTable.RejectChanges on the DataTable to which the DataRow objects belong.

When the DataTable.RejectChanges method is called, any rows still in edit-mode cancel their edits. New rows are removed. Modified and deleted rows return back to their original state (DataRowState.Unchanged).

The following example shows a class derived from the DataSet class. The RejectChanges event invoked from within a function.

Private Sub RejectChangesInDataSet()
    ' Instantiate the derived DataSet.
    Dim derivedData As DerivedDataSet
    derivedData = New DerivedDataSet()

   ' Insert code to change values.

   ' Invoke the RejectChanges method in the derived class.
   derivedData.RejectDataSetChanges()
End Sub
   
Public Class DerivedDataSet
    Inherits System.Data.DataSet
     
    Public Sub RejectDataSetChanges()
        ' Invoke the RejectChanges method.
        Me.RejectChanges()
    End Sub
 End Class

private void RejectChangesInDataSet()
{
    // Instantiate the derived DataSet.
    DerivedDataSet derivedData = new DerivedDataSet();

    // Insert code to change values.

    // Invoke the RejectChanges method in the derived class.
    derivedData.RejectDataSetChanges();


public  class DerivedDataSet:System.Data.DataSet 
{
    public void RejectDataSetChanges()
    {
        // Invoke the RejectChanges method.
        this.RejectChanges();
    

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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

.NET Compact Framework