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!
