EventToCommand
在用户插入价格和数量后,我正在使用 Galasoft 的代码来更新 Line Total 单元格。当我插入价格、数量并按 Enter 时,请帮我找到适当的方法来更改 Line Total。我试过InputBindings
了,但不幸的是没有用。
这是我的视图中的 Datagrid XAML:
<DataGrid IsReadOnly="False" x:Name="_StockCardItems" ItemsSource="{Binding InvoiceDetailsList, Mode=TwoWay}" SelectedItem="{Binding SelectedItem}" CanUserDeleteRows="True" CanUserAddRows="False">
<i:Interaction.Triggers>
<i:EventTrigger EventName="CurrentCellChanged">
<gs:EventToCommand PassEventArgsToCommand="True" Command="{Binding CurrentCellChangedCommand}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<DataGrid.InputBindings>
<KeyBinding Key="Enter" Command="{Binding CurrentCellChangedCommand}"/>
</DataGrid.InputBindings>
<DataGrid.Columns>
<DataGridTemplateColumn Header="Désignation" Width="400" IsReadOnly="True">
<DataGridTemplateColumn.CellTemplate >
<DataTemplate>
<TextBlock Margin="10,2" HorizontalAlignment="Left" Text="{Binding Path=Items.Designation}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn Header="Quantité" Width="150" IsReadOnly="False">
<DataGridTemplateColumn.CellTemplate >
<DataTemplate>
<TextBox Margin="10,0" HorizontalAlignment="Center" GotKeyboardFocus="TextBox_GotKeyboardFocus" GotMouseCapture="TextBox_GotMouseCapture" IsReadOnly="False" Text="{Binding Path=Quantity, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, Converter={StaticResource RemoveDoubleZero}}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn Header="PU" Width="150" >
<DataGridTemplateColumn.CellTemplate >
<DataTemplate>
<TextBox Margin="10,0" HorizontalAlignment="Center" IsReadOnly="False" GotKeyboardFocus="TextBox_GotKeyboardFocus" GotMouseCapture="TextBox_GotMouseCapture" Text="{Binding Path=UnitePrice, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, Converter={StaticResource RemoveDoubleZero}}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn Header="Montant HT" Width="150" >
<DataGridTemplateColumn.CellTemplate >
<DataTemplate>
<TextBlock Margin="10,2" HorizontalAlignment="Right" Text="{Binding Path=Line_Total,Mode=TwoWay,ValidatesOnExceptions=True,ValidatesOnDataErrors=True, StringFormat=n, ConverterCulture=fr-FR}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
这是CurrentCellChangedCommand
ViewModel 中的执行方法(SelectedItem
是一个 EF 实体):
private void RecalculateLineTotal()
{
if (SelectedItem != null)
SelectedItem.Line_Total = SelectedItem.Quantity * SelectedItem.UnitePrice;
}
提前致谢