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!
