Button click changes visibility of a DataGrid with a Trigger in WPF

问题

Hi i am trying to find some way to when a button is clicked changes the visibility of other control, like a DataGrid with a Trigger in XAML.

The button only changes the visibility of the DataGrid to Visible, it does other things in Code Behind, but this is something that i think that can be done in a Style with a Trigger.

I tried to find a solution and it seems to be possible to do but i can't understand how.

Thanks in advance.

回答1:

<Button Content="Button!">
    <Button.Triggers>
        <EventTrigger RoutedEvent="Button.Click">
            <BeginStoryboard>
                <Storyboard>
                    <ObjectAnimationUsingKeyFrames Storyboard.Target="{x:Reference dataGrid}"
                                                   Storyboard.TargetProperty="Visibility">
                        <DiscreteObjectKeyFrame KeyTime="0:0:0"
                                                Value="{x:Static Visibility.Visible}"/>
                    </ObjectAnimationUsingKeyFrames>
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>
    </Button.Triggers>
</Button>

{x:Reference dataGrid} references a DataGrid with the name dataGrid, alternatively you could just use Storyboard.TargetName. You would normally use the Storyboard.Target property if you do binding or references to resources.

回答2:

Just a suggestion, but how about, for something more understandable, having a Checkbox enabling/disabling the DataGrid display? This is what I usually do:

<DockPanel LastChildFill="True">
   <CheckBox DockPanel.Dock="Right" VerticalAlignment="Center" x:Name="DisplayBox"
                      Content="Display grid" Margin="4" IsChecked="False"/>
   <DataGrid Visibility="{Binding ElementName=DisplayBox, Path=IsChecked, Converter={StaticResource BoolToVisibilityConverter}}" />
</DockPanel>

And of course, you'll have to implement the appropriate converter

来源：https://stackoverflow.com/questions/5663394/button-click-changes-visibility-of-a-datagrid-with-a-trigger-in-wpf

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