小编Ste*_*ven的帖子

我只想在我的两个数据网格都选择了项目时才启用按钮。现在，当两个数据网格都具有选择项时，将启用该功能。有任何想法吗？

<Button x:Name="button" Content="Z" Grid.Column="1" Margin="0,240,0,0" VerticalAlignment="Top" FontFamily="Wingdings 3" FontSize="21.333" ToolTip="Set the selected alarm for the selected alarm time">
                    <Button.Style>
                        <Style TargetType="Button">
                            <Setter Property="IsEnabled" Value="True" />
                            <Setter Property="Opacity" Value="1" />
                            <Style.Triggers>
                                <MultiDataTrigger>
                                    <MultiDataTrigger.Conditions>
                                        <Condition Binding="{Binding ElementName=alarmProfilesDataGrid, Path=SelectedItem}" Value="{x:Null}"/>
                                        <Condition Binding="{Binding ElementName=alarmFilesDataGrid, Path=SelectedItem}" Value="{x:Null}"/>
                                    </MultiDataTrigger.Conditions>
                                    <MultiDataTrigger.Setters>
                                        <Setter Property="IsEnabled" Value="False" />
                                        <Setter Property="Opacity" Value=".5" />
                                        </MultiDataTrigger.Setters>
                                </MultiDataTrigger>
                            </Style.Triggers>
                        </Style>
                    </Button.Style>
                </Button>