DomainContext.RejectChanges Method
[WCF RIA Services Version 1 Service Pack 2 is compatible with either .NET framework 4 or .NET Framework 4.5, and with either Silverlight 4 or Silverlight 5.]
Reverts all pending changes for this DomainContext.
Namespace: System.ServiceModel.DomainServices.Client
Assembly: System.ServiceModel.DomainServices.Client (in System.ServiceModel.DomainServices.Client.dll)
Syntax
'Declaration
Public Sub RejectChanges
'Usage
Dim instance As DomainContext
instance.RejectChanges()
public void RejectChanges()
public:
void RejectChanges()
member RejectChanges : unit -> unit
public function RejectChanges()
Examples
The following code example shows methods that call the SubmitChanges and RejectChanges methods.
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
_customerContext.SubmitChanges(AddressOf OnSubmitCompleted, Nothing)
End Sub
Private Sub RejectButton_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
_customerContext.RejectChanges()
CheckChanges()
End Sub
Private Sub CustomerGrid_RowEditEnded(ByVal sender As System.Object, ByVal e As System.Windows.Controls.DataGridRowEditEndedEventArgs)
CheckChanges()
End Sub
Private Sub CheckChanges()
Dim changeSet = _customerContext.EntityContainer.GetChanges()
ChangeText.Text = changeSet.ToString()
Dim hasChanges = _customerContext.HasChanges
SaveButton.IsEnabled = hasChanges
RejectButton.IsEnabled = hasChanges
End Sub
Private Sub OnSubmitCompleted(ByVal so As SubmitOperation)
If (so.HasError) Then
MessageBox.Show(String.Format("Submit Failed: {0}", so.Error.Message))
so.MarkErrorAsHandled()
End If
CheckChanges()
End Sub
private void SaveButton_Click(object sender, RoutedEventArgs e)
{
_customerContext.SubmitChanges(OnSubmitCompleted, null);
}
private void RejectButton_Click(object sender, RoutedEventArgs e)
{
_customerContext.RejectChanges();
CheckChanges();
}
private void CustomerGrid_RowEditEnded(object sender, DataGridRowEditEndedEventArgs e)
{
CheckChanges();
}
private void CheckChanges()
{
EntityChangeSet changeSet = _customerContext.EntityContainer.GetChanges();
ChangeText.Text = changeSet.ToString();
bool hasChanges = _customerContext.HasChanges;
SaveButton.IsEnabled = hasChanges;
RejectButton.IsEnabled = hasChanges;
}
private void OnSubmitCompleted(SubmitOperation so)
{
if (so.HasError)
{
MessageBox.Show(string.Format("Submit Failed: {0}", so.Error.Message));
so.MarkErrorAsHandled();
}
CheckChanges();
}