/// <summary>
/// Deliberately adds BO to the grid's collection because current habanero model only
/// adds BO to grid when it is saved. This causes a problem when you call col.CreateBO(), since
/// it adds the BO twice and throws a duplicate key exception.
/// </summary>a
private void NewButtonClicked(object sender, EventArgs e)
{
_newBO = null;
IBusinessObject currentBO = CurrentBusinessObject;
if (currentBO != null)
{
if (!currentBO.IsValid())
{
_iboEditorControl.DisplayErrors();
return;
}
currentBO.Save();
}
IBusinessObjectCollection collection = _readOnlyGridControl.Grid.BusinessObjectCollection;
_readOnlyGridControl.Grid.SelectionChanged -= GridSelectionChanged;
_newBO = collection.CreateBusinessObject();
// _readOnlyGridControl.Grid.GetBusinessObjectCollection().Add(businessObject);
_readOnlyGridControl.SelectedBusinessObject = _newBO;
CurrentBusinessObject = _newBO;
UpdateControlEnabledState();
//collection.Add(businessObject);
_readOnlyGridControl.Grid.SelectionChanged += GridSelectionChanged;
GridSelectionChanged(null, null);
_iboEditorControl.Focus();
_iboEditorControl.ClearErrors();
_cancelButton.Enabled = true;
}
private void GridSelectionChanged(object sender, EventArgs e)
{
if (_newBO != null)
{
if (_newBO.Status.IsDirty)
{
if (_newBO.IsValid())
{
_newBO.Save();
}
else
{
_newBO = null;
}
}
}
if (_lastSelectedBusinessObject == null || _readOnlyGridControl.SelectedBusinessObject != _lastSelectedBusinessObject)
{
if (!CheckRowSelectionCanChange())
{
return;
}
SavePreviousBusinessObject();
SetSelectedBusinessObject();
}
}
/// <summary>
/// Using the RowValidating event did not work as expected, so this method provides
/// a way to check whether the grid selection should be forced back to the previous selection
/// </summary>
private bool CheckRowSelectionCanChange()
{
if (_lastSelectedBusinessObject != null && _readOnlyGridControl.SelectedBusinessObject != _lastSelectedBusinessObject)
{
if (!_lastSelectedBusinessObject.IsValid())
{
_iboEditorControl.DisplayErrors();
_readOnlyGridControl.SelectedBusinessObject = _lastSelectedBusinessObject;
return(false);
}
}
return(true);
}