private void btnSaveAsXml_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.DefaultExt = ".xml";
sfd.Filter = "XML file | *.xml | All Files | *.*";
sfd.AddExtension = true;
if (sfd.ShowDialog() == DialogResult.OK)
{
_controller.UpdateContext();;
_controller.SaveAsXML(sfd.FileName);
}
}