Damn. I was just thinking it could be a timing issue and was within about 10 secs of suggesting that :-}
>It turns out I needed to do this:
>
>
> private void grdAirWayBillDetails_PreviewKeyDown(object sender, KeyEventArgs e)
> {
> if (e.Key == Key.Enter)
> {
> this.grdAirWayBillDetails.CommitEdit();
> Dispatcher.BeginInvoke(new Action(() =>
> {
> AddDetailRow();
> }), DispatcherPriority.Background, null);
> }
> }
>>
>So now I just need to work out how to detect when I am on the last row and column in the grid.
>
>
>>Ah. I 'm guessing that 'AirWayBillDetail' is a MM thing - in which case I don't know what it does so your understanding is better than mine :-}
>>
>>Doesn't sound from the syntax as if it is actually added to the collection tho :-{
>>
>>>if I understand it correctly, that's what this line does:
>>>
>>>
AirWayBillDetailEntity entity = this.AirWayBillDetail.NewEntity(new AirWayBillDetailDefaults(this.AirWayBill.Entity.awb_pk));
>>>
>>>The rest of it is setting focus to the correct cell in the grid.
>>>
>>>Or have I misunderstood?
>>>
>>>
>>>>Haven't looked at this properly but would it make more sense (in AddDetailRow()) to just add the created entity to the collection to which the grid is bound ?
>>>>
>>>>>Anyone have any ideas on this?
>>>>>
>>>>>>Hi,
>>>>>>
>>>>>>I have a datagrid with two columns, one a dropdown/combo and the other a textbox for entering a value. Once a value is entered in the last row I want to automatically add another row to the datagrid and place the focus on the combo.
>>>>>>
>>>>>>This is the xaml for the grid:
>>>>>>
>>>>>>
<DataGrid AutoGenerateColumns="False" Grid.Row="1" Grid.Column="3"
>>>>>> Height="Auto"
>>>>>> HorizontalAlignment="Stretch"
>>>>>> Margin="0"
>>>>>> Name="grdAirWayBillDetails"
>>>>>> VerticalAlignment="Stretch"
>>>>>> Width="Auto"
>>>>>> IsSynchronizedWithCurrentItem="True"
>>>>>> ItemsSource="{Binding Mode=default}"
>>>>>> SelectionMode="Single"
>>>>>> GridLinesVisibility="None"
>>>>>> HeadersVisibility="Column"
>>>>>> Grid.ColumnSpan="2"
>>>>>>
>>>>>> CanUserAddRows="False"
>>>>>> CanUserDeleteRows="False"
>>>>>> SelectionUnit="Cell"
>>>>>> Grid.RowSpan="4">
>>>>>> <DataGrid.Resources>
>>>>>> <Style x:Key="AlignRight" TargetType="DataGridCell">
>>>>>> <Setter Property="HorizontalAlignment" Value="Right" />
>>>>>>
>>>>>> </Style>
>>>>>> <Style x:Key="AlignRightHeader" TargetType="DataGridColumnHeader">
>>>>>> <Setter Property="HorizontalAlignment" Value="Right" />
>>>>>> </Style> </DataGrid.Resources>
>>>>>> <DataGrid.Columns>
>>>>>> <DataGridComboBoxColumn Header="Charge Type" Width="2*"
>>>>>> DisplayMemberPath="cty_name"
>>>>>> SelectedValuePath="cty_pk"
>>>>>> SelectedValueBinding="{Binding awd_ctyfk, Mode=Default}"/>
>>>>>>
>>>>>> <DataGridTextColumn Header="Amount" Width="*" Binding="{Binding awd_amount, Mode=default}"
>>>>>> CellStyle="{StaticResource AlignRight}"
>>>>>> HeaderStyle="{StaticResource AlignRightHeader}"/>
>>>>>> </DataGrid.Columns>
>>>>>> </DataGrid>>>>>>>
>>>>>>This is my AddDetailRow() code:
>>>>>>
>>>>>>
private void AddDetailRow()
>>>>>> {
>>>>>> AirWayBillDetailEntity entity = this.AirWayBillDetail.NewEntity(new AirWayBillDetailDefaults(this.AirWayBill.Entity.awb_pk));
>>>>>>
>>>>>> // Select cell and begin edit
>>>>>> this.grdAirWayBillDetails.CommitEdit();
>>>>>>
>>>>>> this.grdAirWayBillDetails.Focus();
>>>>>> System.Windows.Controls.DataGridCellInfo cellInfo = new System.Windows.Controls.DataGridCellInfo(entity, this.grdAirWayBillDetails.Columns[0]);
>>>>>> this.grdAirWayBillDetails.SelectedCells.Clear();
>>>>>> this.grdAirWayBillDetails.SelectedCells.Add(cellInfo);
>>>>>> this.grdAirWayBillDetails.CurrentCell = cellInfo;
>>>>>> this.grdAirWayBillDetails.BeginEdit();
>>>>>> }>>>>>>
>>>>>>This code causes the total of the amount column in the grid to get calculated:
>>>>>>
>>>>>>
void AirWayBillDetail_StateChange(mmBaseBusinessObject bizObj, mmBusinessStateChangeEventArgs e)
>>>>>> {
>>>>>> if (e.State == mmBusinessState.Retrieved)
>>>>>> {
>>>>>> // Store the Air WayBill Detail in the DataGrid's data context
>>>>>> this.grdAirWayBillDetails.DataContext = this.AirWayBillDetail.EntityList;
>>>>>>
>>>>>> // Hide the new item row place holder in the Air WayBill Detail DataGrid
>>>>>> ((IEditableCollectionView)CollectionViewSource.GetDefaultView(grdAirWayBillDetails.ItemsSource)).NewItemPlaceholderPosition =
>>>>>> NewItemPlaceholderPosition.None;
>>>>>> }
>>>>>> //this.ShowAirWayBillTotal();
>>>>>> if (this.AirWayBillDetail.EntityList != null)
>>>>>> {
>>>>>> this.AirWayBillTotal = this.AirWayBillDetail.EntityList.Sum(x => x.awd_amount);
>>>>>> foreach (var c in this.AirWayBillDetail.EntityList)
>>>>>> {
>>>>>> c.PropertyChanged += CollectionItemChanged;
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> }>>>>>>
>>>>>>This is what I have in my CollectionItemChanged:
>>>>>>
>>>>>>
void CollectionItemChanged(object sender, PropertyChangedEventArgs e)
>>>>>> {
>>>>>> if (e.PropertyName == "awd_amount")
>>>>>> {
>>>>>> AirWayBillTotal = AirWayBillDetail.EntityList.Sum(x => x.awd_amount);
>>>>>> OnPropertyChanged("AirWayBillTotal");
>>>>>> AddDetailRow();
>>>>>> }
>>>>>> }>>>>>>
>>>>>>What is happening now is that if I press Tab after entering an amount, a new row gets added, but focus goes to the next control in the tab order after the grid. So I have two questions:
>>>>>>
>>>>>>1. How to check if I'm on the last row?
>>>>>>
>>>>>>2. How to set focus to the combo?
>>>>>>
>>>>>>
update:>>>>>>
>>>>>>I have got a bit further with this using the PreviewKeyDown event and checking for Return, then calling my AddDetailRow(), but when I do this the combobox is not visible!
