DataTable.AcceptChanges DataTable.AcceptChanges DataTable.AcceptChanges DataTable.AcceptChanges Method

Definizione

Convalida tutte le modifiche apportate a questa tabella sin dall'ultima chiamata al metodo AcceptChanges().Commits all the changes made to this table since the last time AcceptChanges() was called.

public:
 void AcceptChanges();
public void AcceptChanges ();
member this.AcceptChanges : unit -> unit
Public Sub AcceptChanges ()

Esempi

Nell'esempio seguente testa ogni tabella per gli errori.The following example tests each table for errors. Se è possono risolvere gli errori della tabella (passando a una funzione non definita), AcceptChanges viene chiamato; in caso contrario, RejectChanges viene chiamato.If the table's errors can be reconciled (by passing it to an undefined function), AcceptChanges is called; otherwise, RejectChanges is called.

private void AcceptOrReject(DataTable table)
{
    // If there are errors, try to reconcile.
    if(table.HasErrors)
    { 
        if(Reconcile(table))
        {
            // Fixed all errors.
            table.AcceptChanges();
        }
        else
        {
            // Couldn'table fix all errors.
            table.RejectChanges();
        }
    }
    else
        // If no errors, AcceptChanges.
        table.AcceptChanges();
}

private bool Reconcile(DataTable thisTable)
{
    foreach(DataRow row in thisTable.Rows)
    {
        //Insert code to try to reconcile error.

        // If there are still errors return immediately
        // since the caller rejects all changes upon error.
        if(row.HasErrors)
            return false;
    }
    return true;
}
Private Sub AcceptOrReject(table As DataTable)
    ' If there are errors, try to reconcile.
        If (table.HasErrors) Then
            If (Reconcile(table)) Then
                ' Fixed all errors.
                table.AcceptChanges()
            Else
                ' Couldn'table fix all errors.
                table.RejectChanges()
            End If
        Else
            ' If no errors, AcceptChanges.
            table.AcceptChanges()
        End If
 End Sub
 
Private Function Reconcile(thisTable As DataTable) As Boolean
    Dim row As DataRow
    For Each row in thisTable.Rows
       'Insert code to try to reconcile error.

       ' If there are still errors return immediately
       ' since the caller rejects all changes upon error.
       If row.HasErrors Then
           Reconcile = False
           Exit Function
       End If
    Next row
    Reconcile = True
 End Function

Commenti

Quando AcceptChanges viene chiamato, qualsiasi DataRow oggetto ancora in modalità di modifica termina correttamente le relative modifiche.When AcceptChanges is called, any DataRow object still in edit mode successfully ends its edits. Il DataRowState cambia anche: tutti i Added e Modified righe diventare Unchanged, e Deleted vengono rimosse le righe.The DataRowState also changes: all Added and Modified rows become Unchanged, and Deleted rows are removed.

Il AcceptChanges metodo viene chiamato in genere su una DataTable dopo aver tentato di aggiornare il DataSet utilizzando il DbDataAdapter.Update (metodo).The AcceptChanges method is generally called on a DataTable after you attempt to update the DataSet using the DbDataAdapter.Update method.

Si applica a

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