wpf 从代码中关闭 Material Design DialogHost
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Closing Material Design DialogHost from Code
提问by user3342256
I'm trying to find a way to initiate the close of an active DialogHost from code, but have been unable to find the right syntax. I think the main challenge is accessing the DialogHost from a class outside of the MainWindow code behind.
我试图找到一种方法来从代码启动关闭活动的 DialogHost，但一直无法找到正确的语法。我认为主要的挑战是从背后的 MainWindow 代码之外的类访问 DialogHost。
The entirety of my XAML:
我的 XAML 的全部内容：
<Window x:Class="MaterialDesignTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MaterialDesignTest"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525"
xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
TextElement.Foreground="{DynamicResource MaterialDesignBody}"
TextElement.FontWeight="Regular"
TextElement.FontSize="13"
TextOptions.TextFormattingMode="Ideal"
TextOptions.TextRenderingMode="Auto"
Background="{DynamicResource MaterialDesignPaper}"
FontFamily="{DynamicResource MaterialDesignFont}">
<materialDesign:DialogHost Identifier="RootDialog" Loaded="DialogHost_Loaded">
<Grid>
<StackPanel>
<Button Width="100" x:Name="SearchRestore" Margin="0 150 0 0" Command="{x:Static materialDesign:DialogHost.OpenDialogCommand}" materialDesign:DialogHost.DialogClosingAttached="SearchRestore_OnDialogClosing"
Content="Restore" Click="SearchRestore_Click">
<Button.CommandParameter>
<StackPanel Margin="10">
<TextBlock Text="Restoring..."/>
<Button Name="CircleButton" Margin="0 50 0 0" Style="{StaticResource MaterialDesignFloatingActionButton}"
Command="{Binding SaveComand}" IsHitTestVisible="False"
materialDesign:ButtonProgressAssist.IsIndicatorVisible="{Binding IsSaving}"
materialDesign:ButtonProgressAssist.Value="{Binding SaveProgressButton}">
<materialDesign:PackIcon Height="24" Width="24" Foreground="White">
<materialDesign:PackIcon.Style>
<Style TargetType="materialDesign:PackIcon" BasedOn="{StaticResource {x:Type materialDesign:PackIcon}}">
<Setter Property="Kind" Value="CloudSync" />
<Style.Triggers>
<DataTrigger Binding="{Binding IsSaveComplete}" Value="True">
<Setter Property="Kind" Value="Check" />
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:0.8" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
</DataTrigger>
</Style.Triggers>
</Style>
</materialDesign:PackIcon.Style>
</materialDesign:PackIcon>
</Button>
</StackPanel>
</Button.CommandParameter>
</Button>
</StackPanel>
</Grid>
</materialDesign:DialogHost>
And the code from which I need to initiate the close (this is in a view model, not the MainWindow code behind):
以及我需要从中启动关闭的代码（这是在视图模型中，而不是后面的 MainWindow 代码）：
private async void progressTimerTick(object sender, EventArgs e)
{
if (progress < 100 && cycles < 2)
{
if (progress == 99)
{
cycles++;
progress = 0;
}
IsSaveComplete = false;
IsSaving = true;
progress++;
SaveProgressButton = progress;
}
else
{
IsSaveComplete = true;
IsSaving = false;
progressTimer.Enabled = false;
SaveProgressButton = 0;
await PutTaskDelay();
//Close dialog here
}
}
回答by Talha Talip A??kg?z
There are 3 ways to close a dialog in MDIX:
在 MDIX 中有 3 种关闭对话框的方法：
var dialogResult = await DialogHost.Show(myDialogControl, (sender, args) =>
{
args.Session.Close(false);
});
or
或者
DialogHost.CloseDialogCommand.Execute(null,null);
or
或者
DialogHostInstance.IsOpen = false;
