关闭弹出窗口

Question

我是PRISM和WPF的新手，对我的英语也很抱歉。 我的问题如下： 我有一个数据网格，当用户想删除行时，我通过确认弹出窗口（棱镜）通知他/她。如果他/她接受，则将删除所选行，但如果他/她取消该过程，则在关闭此窗口后，数据网格不会恢复其焦点。 所选记录仅为灰色而非蓝色，如默认情况下。

取消弹出后。这不好！ Image1

一定是这样！ Image2

这是我的ViewModel：

 /// <summary>
/// DataManipulationViewModel 
/// </summary>
public class DataManipulationViewModel : BindableBase
{
    private ObservableCollection<PriceCalcDS.BUTORLAPRow> collectionButorlap;
    private ObservableCollection<PriceCalcDS.BUTORLAPRow> currentButorlap;
    private ICollectionView colViewButorlap;
    private readonly ICommand deleteCommandButorlap;
    private Confirmation confirmation;

    /// <summary>
    /// Confirmation to deleting records
    /// </summary>
    public InteractionRequest<IConfirmation> ConfirmationRequestDeletingRecords { get; private set; }

    /// <summary>
    /// Current BUTORLAP
    /// </summary>
    public ObservableCollection<PriceCalcDS.BUTORLAPRow> CurrentButorlap
    {
        get { return currentButorlap; }
        set
        {
            this.SetProperty(ref this.currentButorlap, value);
        }
    }

    /// <summary>
    /// The rows of the table BUTORLAP
    /// </summary>
    public ICollectionView ColViewButorlap
    {
        get { return colViewButorlap; }
        set
        {
            this.SetProperty(ref this.colViewButorlap, value);
        }
    }

    /// <summary>
    /// Delete command
    /// </summary>
    public ICommand DeleteCommandButorlap
    {
        get { return deleteCommandButorlap; }
    }

    /// <summary>
    /// Constructor
    /// </summary>
    public DataManipulationViewModel()
    {
        DataBase.FillDataSet();
        this.collectionButorlap = new ObservableCollection<PriceCalcDS.BUTORLAPRow>();
        this.currentButorlap = new ObservableCollection<PriceCalcDS.BUTORLAPRow>();


        FillDtButorlap();

        this.colViewButorlap = new ListCollectionView(collectionButorlap);


        this.colViewButorlap.CurrentChanged += SelectedButorlapChanged;


        this.deleteCommandButorlap = new DelegateCommand<object>(this.DeleteRecordButorlap);


        this.ConfirmationRequestDeletingRecords = new InteractionRequest<IConfirmation>();
        this.confirmation = new Confirmation();
    }

    /// <summary>
    /// SelectedChanged event
    /// </summary>
    private void SelectedButorlapChanged(object sender, EventArgs e)
    {
        // Deleteing previous values from currentButorlap
        this.currentButorlap.Clear();

        if (colViewButorlap.CurrentItem != null)
        {
            this.currentButorlap.Add(colViewButorlap.CurrentItem as PriceCalcDS.BUTORLAPRow);
        }
    }

    /// <summary>
    /// Fill collectionButorlap with the rows of the table BUTORLAP
    /// </summary>
    private void FillDtButorlap()
    {
        foreach (var item in StaticDataSet.priceCalcDs.BUTORLAP.Rows)
        {
            collectionButorlap.Add(item as PriceCalcDS.BUTORLAPRow);
        }
    }

    /// <summary>
    /// Deleting rows of the table BUTORLAP
    /// </summary>
    /// <param name="parameter">Deleting rows (selected in DataGrid)</param>
    private void DeleteRecordButorlap(object parameter)
    {
        IList selection = (IList)parameter;
        List<object> deletingRows = new List<object>();

        if (selection.Count != 0)
        {
            // Save deleting rows
            foreach (var selectionValue in selection)
            {
                deletingRows.Add(selectionValue);
            }

            // Notica init
            this.confirmation.Title = "Figyelmeztetés";

            if (deletingRows.Count == 1)
            {
                this.confirmation.Content = "Biztosan törli a kijelölt rekordot?";
            }
            else
            {

                this.confirmation.Content = "Biztosan törli a kijelölt rekordokat?";
            }

            // Notify user
            this.ConfirmationRequestDeletingRecords.Raise(
                this.confirmation,
                c =>
                {
                    if (c.Confirmed)
                    {
                        // If user accpted request, the rows will be deleted
                        foreach (var deletingRow in deletingRows)
                        {
                            collectionButorlap.Remove(deletingRow as PriceCalcDS.BUTORLAPRow);
                        }
                    }
                    else
                    {
                        //If user cancelled request

                    }
                });
        }
    }         
}

这是我的XAML：

<UserControl
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
         xmlns:prism="http://www.codeplex.com/prism"
         xmlns:support="clr-namespace:Support"
         xmlns:PriceCalcDSTableAdapters="clr-namespace:PriceCalculator.Common.Dataset.PriceCalcDSTableAdapters;assembly=PriceCalculator.Common" x:Name="ucDataManipulation" x:Class="PriceCalculator.Modules.DataManipulation.Views.DataManipulationView" 
         mc:Ignorable="d" d:DesignWidth="1365" d:DesignHeight="750" Height="Auto" Width="Auto">
<UserControl.Resources>
    <Color x:Key="TitleBgColor">#FF183B3F</Color>
    <Color x:Key="TitleColor">#FF07333A</Color>
    <Color x:Key="ButtonColor">#FF3E4949</Color>
</UserControl.Resources>
<UserControl.Background>
    <LinearGradientBrush EndPoint="0.5,1" MappingMode="RelativeToBoundingBox" StartPoint="0.5,0">
        <GradientStop Color="#FF022F36"/>
        <GradientStop Offset="0.994" Color="{DynamicResource ViewBaseColor}"/>
    </LinearGradientBrush>
</UserControl.Background>
<i:Interaction.Triggers>
    <prism:InteractionRequestTrigger SourceObject="{Binding ConfirmationRequestDeletingRecords, Mode=OneWay}">
        <prism:PopupWindowAction IsModal="True" CenterOverAssociatedObject="True"/>
    </prism:InteractionRequestTrigger>
</i:Interaction.Triggers>
<Grid x:Name="gridDataManipulation" Cursor="Arrow" Focusable="True" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.CanContentScroll="True" UseLayoutRounding="True">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="20"/>
        <ColumnDefinition Width="10"/>
        <ColumnDefinition Width="100"/>
        <ColumnDefinition Width="8*"/>
        <ColumnDefinition Width="100"/>
        <ColumnDefinition Width="8*"/>
        <ColumnDefinition Width="100"/>
        <ColumnDefinition Width="165*"/>
        <ColumnDefinition Width="100"/>
        <ColumnDefinition Width="10"/>
        <ColumnDefinition Width="20"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="25"/>
        <RowDefinition/>
        <RowDefinition Height="16"/>
        <RowDefinition Height="24"/>
        <RowDefinition Height="23"/>
        <RowDefinition Height="12"/>
    </Grid.RowDefinitions>
    <Border x:Name="brdFrame" BorderThickness="2" Padding="0" Margin="0,10,0,0" Grid.RowSpan="5" Grid.Column="1" Grid.ColumnSpan="9">
        <Border.BorderBrush>
            <SolidColorBrush Color="{DynamicResource FrameColor}"/>
        </Border.BorderBrush>
    </Border>
    <TextBlock x:Name="txbTitle" TextWrapping="Wrap" Text="ADATMANIPULÁCIÓ" Margin="0,1,0,0" FontSize="16" FontFamily="Microsoft Sans Serif" FontWeight="Bold" TextAlignment="Center" Foreground="White" Height="20" Width="160" VerticalAlignment="Top" HorizontalAlignment="Left" Grid.Column="2" Grid.ColumnSpan="3">
        <TextBlock.Background>
            <SolidColorBrush Color="{DynamicResource TitleColor}"/>
        </TextBlock.Background>
    </TextBlock>
    <TabControl x:Name="tcDataManipulation" TabStripPlacement="Top" Margin="0,15,0,0" Grid.Row="1" Grid.Column="2" BorderBrush="White" Grid.ColumnSpan="7">
        <TabControl.Background>
            <SolidColorBrush Color="{DynamicResource FrameColor}"/>
        </TabControl.Background>
        <TabItem Header="BÚTORLAP" Margin="0" Padding="10,2" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" FontSize="13.333" BorderThickness="2">
            <TabItem.BorderBrush>
                <SolidColorBrush Color="{DynamicResource ButtonColor}"/>
            </TabItem.BorderBrush>
            <TabItem.Background>
                <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                    <GradientStop Color="#FFF0F0F0" Offset="0"/>
                    <GradientStop Color="{DynamicResource FrameColor}" Offset="1"/>
                </LinearGradientBrush>
            </TabItem.Background>
            <Grid x:Name="gridButorlap" Margin="0">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="35*"/>
                    <ColumnDefinition Width="57"/>
                    <ColumnDefinition Width="66"/>
                    <ColumnDefinition Width="129"/>
                    <ColumnDefinition Width="80*"/>
                    <ColumnDefinition Width="70"/>
                    <ColumnDefinition Width="195"/>
                    <ColumnDefinition Width="30*"/>
                    <ColumnDefinition Width="100"/>
                    <ColumnDefinition Width="501*"/>
                    <ColumnDefinition Width="36*"/>
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition Height="16*"/>
                    <RowDefinition Height="397*"/>
                    <RowDefinition Height="53*"/>
                    <RowDefinition Height="27"/>
                    <RowDefinition Height="20"/>
                    <RowDefinition Height="20"/>
                    <RowDefinition Height="20"/>
                    <RowDefinition Height="36"/>
                    <RowDefinition Height="16*"/>
                </Grid.RowDefinitions>
                <DataGrid x:Name="dgButorlap" ItemsSource="{Binding Path=ColViewButorlap, Mode=TwoWay}" EnableRowVirtualization="True" IsSynchronizedWithCurrentItem="True" IsReadOnly="True" AutoGenerateColumns="False" Margin="5,0,5,10" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" Grid.Column="1" Grid.Row="1" Grid.ColumnSpan="9">
                    <DataGrid.RowStyle>
                        <Style TargetType="{x:Type DataGridRow}">
                            <Setter Property="support:DataGridRowBehavior.IsDataGridRowFocussedWhenSelected" Value="true"/>
                        </Style>
                    </DataGrid.RowStyle>
                    <DataGrid.Columns>
                        <DataGridTextColumn Header="NÉV" Binding="{Binding Path=BL_NEV}"/>
                        <DataGridTextColumn Header="EGYSÉG" Binding="{Binding Path=BL_EGYSEG}"/>
                        <DataGridTextColumn Header="ÁR" Binding="{Binding Path=BL_AR}"/>
                        <DataGridTextColumn Header="HOSSZÚSÁG" Binding="{Binding Path=BL_HOSSZ}"/>
                        <DataGridTextColumn Header="SZÉLESSÉG" Binding="{Binding Path=BL_SZEL}"/>
                        <DataGridTextColumn Header="KIHOZATAL" Binding="{Binding Path=BL_KIHOZATAL}"/>
                    </DataGrid.Columns>
                </DataGrid>
                <Label Content="Felvitel/Módosítás" Margin="5,1,9,5" Foreground="White" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Grid.Row="3" Padding="0" Grid.Column="1" Grid.ColumnSpan="2"/>
                <DataGrid x:Name="dgBlFelvitelModositas" ItemsSource="{Binding Path=CurrentButorlap}" CanUserAddRows="False" AutoGenerateColumns="False" Margin="5,3,5,0" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" Grid.Row="4" Grid.Column="1" Grid.RowSpan="3" Grid.ColumnSpan="9">
                    <DataGrid.Columns>
                        <DataGridTextColumn Header="NÉV" Binding="{Binding Path=BL_NEV}"/>
                        <DataGridTextColumn Header="EGYSÉG" Binding="{Binding Path=BL_EGYSEG}"/>
                        <DataGridTextColumn Header="ÁR" Binding="{Binding Path=BL_AR}"/>
                        <DataGridTextColumn Header="HOSSZÚSÁG" Binding="{Binding Path=BL_HOSSZ}"/>
                        <DataGridTextColumn Header="SZÉLESSÉG" Binding="{Binding Path=BL_SZEL}"/>
                        <DataGridTextColumn Header="KIHOZATAL" Binding="{Binding Path=BL_KIHOZATAL}"/>
                    </DataGrid.Columns>
                </DataGrid>             
                <Button x:Name="btnBLNewRecord" Content="ÚJ FELVITELE" Style="{DynamicResource btnStyle}" RenderTransformOrigin="0.5,0.5" Grid.Row="7" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" FontSize="13.333" Foreground="White" Grid.Column="1" Grid.ColumnSpan="2" Margin="5,16,18,0"/>
                <Button x:Name="btnBLModifyRecord" Content="MÓDOSÍTÁS" Style="{DynamicResource btnStyle}" Command="{Binding ModifyCommand}" CommandParameter="{Binding ElementName=dgBlFelvitelModositas, Path=SelectedItems}" RenderTransformOrigin="0.5,0.5" Grid.Row="7" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" FontSize="13.333" Grid.Column="3" Foreground="White" Margin="0,16,29,0"/>
                <Button x:Name="btnBLDeleteRecord" Content="TÖRLÉS" Style="{DynamicResource btnStyle}" Command="{Binding DeleteCommandButorlap}" CommandParameter="{Binding ElementName=dgButorlap, Path=SelectedItems}" RenderTransformOrigin="0.5,0.5" Grid.Row="7" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" FontSize="13.333" Grid.Column="4" Foreground="White" Grid.ColumnSpan="2" Margin="0,16,50,0"/>
            </Grid>
        </TabItem>

请帮助我，我该如何解决这个问题？ 我正在使用MVVM模式，如果解决方案是在xaml或ViewModel中，那将会很棒。

Answer 1

你应该把你的元素重点放回去（因为你的对话偷走了它:)）。

所有你需要做的，就是当他取消，得到你的对象，然后把焦点放回去时：

Keyboard.Focus(object_you_want_focused);

您可以在MSDN上找到更多信息（如果它显示＆＃34;不可用＆＃34;，将版本更改为.Net 4，您就会看到它......）