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这个在和我玩,我似乎无法弄清楚 - 我需要一些外部帮助,兄弟!

我想要一个没有标题、最小化、最大化和关闭按钮的弹出窗口,因为我们想自己设置样式并在弹出窗口的屏幕上添加自定义关闭按钮。

所以我按照这些链接找到了我现在的位置:

https://msdn.microsoft.com/en-us/library/ff921081(v=pandp.40).aspx https://msdn.microsoft.com/en-us/library/gg405494(v=pandp.40) .aspx https://www.codeproject.com/Articles/269364/MVVM-PRISM-Modal-Windows-by-using-Interaction-Requ

但我仍然无法弄清楚如何实现这一目标。基本窗口有“确定”和“取消”按钮,但这些是默认设置,我不希望这样,这就是我采用“自定义视图”方式的原因。

这是我的主窗口的 xaml:

<Window x:Class="Prototype.Views.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:prism="http://prismlibrary.com/"
        prism:ViewModelLocator.AutoWireViewModel="True"
        xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
        xmlns:views="clr-namespace:Prototype.Views"
        Height="349.146" Width="727.317"
        WindowState="Maximized">
    <Grid>
        <Button Command="{Binding RaiseCustomPopupViewCommand}">Show Popup Window</Button>

        <i:Interaction.Triggers>
            <prism:InteractionRequestTrigger SourceObject="{Binding CustomPopupViewRequest, Mode=OneWay}">
                <prism:PopupWindowAction IsModal="True" CenterOverAssociatedObject="True">
                    <prism:PopupWindowAction.WindowStyle>
                        <Style TargetType="Window">
                            <Setter Property="ShowInTaskbar" Value="False"/>
                            <Setter Property="WindowStyle" Value="None"/>
                            <Setter Property="ResizeMode" Value="NoResize"/>
                        </Style>
                    </prism:PopupWindowAction.WindowStyle>
                    <prism:PopupWindowAction.WindowContent>
                        <views:CustomPopupView  />
                    </prism:PopupWindowAction.WindowContent>
                </prism:PopupWindowAction>
            </prism:InteractionRequestTrigger>
        </i:Interaction.Triggers>
    </Grid>
</Window>

这里是主窗口的代码:

public class MainWindowViewModel : BindableBase
{
    public InteractionRequest<INotification> CustomPopupViewRequest { get; private set; }

    public MainWindowViewModel()
    {
        CustomPopupViewRequest = new InteractionRequest<INotification>();
    }

    public DelegateCommand RaiseCustomPopupViewCommand => new DelegateCommand(RaiseCustomPopupView, CanRaiseCustomPopupView);

    public string InteractionResultMessage { get; private set; }

    private void RaiseCustomPopupView()
    {
        InteractionResultMessage = "";
        CustomPopupViewRequest.Raise(new Notification { Content = "Message for the CustomPopupView", Title = "Custom Popup" });
    }

    private bool CanRaiseCustomPopupView()
    {
        return true;
    }
}

InteractionRequestTriggerSourceObject 是一个 UserControl。

这是它的xaml:

<UserControl x:Class="Prototype.Views.CustomPopupView"
             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:prism="http://prismlibrary.com/"
             prism:ViewModelLocator.AutoWireViewModel="True"
             xmlns:local="clr-namespace:Prototype.Views"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300"
             MinWidth="300" MinHeight="100">
    <StackPanel Orientation="Vertical" Background="Gray">
        <Button DockPanel.Dock="Right"
                Content="Close"/>
    </StackPanel>
</UserControl>

如您所见,我在 UserControl 中有一个“关闭”按钮。

我尝试使用命令,但即使那样我也无法访问窗口或执行某些操作来关闭窗口。

是否有某种棱镜命令或我不知道的东西?

是否可以使用按钮以我想要的方式关闭窗口?

任何帮助将不胜感激!:)

4

1 回答 1

1

没关系,我只是设法自己解决了这个问题:)。

我的想法不同,但我真正想要的是CancelCommand.

这就是我们在 UserControl 中实现它的方式,没有其他更改。一切都和上面描述的一样,但是 CustomPopup 现在的 ViewModel 中有以下内容:

public class CustomPopupViewModel : BindableBase, IInteractionRequestAware
{
    public CustomPopupViewModel()
    {
        CancelCommand = new DelegateCommand(CancelInteraction);
    }

    private CustomPopupSelectionNotification notification;

    public INotification Notification
    {
        get
        {
            return this.notification;
        }
        set
        {
            if (value is CustomPopupSelectionNotification)
            {
                this.notification = value as CustomPopupSelectionNotification;
                this.OnPropertyChanged(() => this.Notification);
            }
        }
    }

    public Action FinishInteraction { get; set; }

    public System.Windows.Input.ICommand CancelCommand { get; private set; }

    public void CancelInteraction()
    {
        if (notification != null)
        {
            notification.SelectedItem = null;
            notification.Confirmed = false;
        }

        FinishInteraction();
    }
}

您还会注意到我们有一个名为 的类CustomPopupSelectionNotification

这是它的代码:

public class CustomPopupSelectionNotification : Confirmation
{
    public CustomPopupSelectionNotification()
    {
        Items = new List<string>();
        SelectedItem = null;
    }

    public CustomPopupSelectionNotification(IEnumerable<string> items) : this()
    {
        foreach (string item in items)
        {
            Items.Add(item);
        }
    }

    public IList<string> Items { get; private set; }

    public string SelectedItem { get; set; }
}   

所以简而言之,我只是cancelling弹出窗口,而不是尝试close它。

然后我将该命令添加CancelCommand到我的 UserControl 上的“关闭”按钮中。

于 2017-02-24T08:42:01.610 回答