wpf prism 《3》 弹窗 IOC
传统的弹窗 这种耦合度高new 窗体() . Show();
new 窗体() . ShowDialog();
使用Prism 主动的 IOC 弹窗的 必须 必须 必须 页面控件
https://i-blog.csdnimg.cn/direct/162922a2132e4a90abcc3171cca3f71f.png
弹窗的 必须 必须 必须 页面控件
弹窗的 必须 必须 必须 页面控件
弹窗的 必须 必须 必须 页面控件
弹窗的 必须 必须 必须 页面控件
》》否则 报上面的错误
https://i-blog.csdnimg.cn/direct/97fada087ecd446c85bfa4381f6deb34.png
https://i-blog.csdnimg.cn/direct/b934f3b3d57f4dc0b76025988f15a512.png
》》主步伐
<Window x:Class="BlankApp2.Views.MainView"
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"
Title="{Binding Title}" Height="350" Width="525" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="10">
<Button Content="弹窗1" Command="{Binding OpenCommand}" CommandParameter="Popup"></Button>
<Button Content="弹窗2" Command="{Binding OpenCommand}" CommandParameter="UCPopup"></Button>
<!--<Button Content="模块Student" Command="{Binding OpenCommand}" CommandParameter="ViewXX"></Button>
<Button Content="模块C" Command="{Binding OpenCommand}" CommandParameter="ViewC"></Button>
<Button Content="回退" Command="{Binding BackCommand}"></Button>-->
</StackPanel>
<ContentControl Grid.Row="1" prism:RegionManager.RegionName="ContentRegion" />
</Grid>
</Window>
》》主步伐对应的 ViewModel
using Prism.Commands;
using Prism.Dialogs;
using Prism.Mvvm;
using Prism.Navigation;
using Prism.Navigation.Regions;
using System;
namespace BlankApp2.ViewModels
{
public class MainViewModel : BindableBase
{
private string _title = "Prism Application";
public string Title
{
get { return _title; }
set { SetProperty(ref _title, value); }
}
public DelegateCommand<string> OpenCommand { get; private set; }
public IDialogService DialogService { get; }
public MainViewModel(IDialogService dialogService)
{
this.DialogService = dialogService;
this.OpenCommand = new DelegateCommand<string>(Open);
}
private void Open(string obj)
{
//传递给弹窗的参数信息
DialogParameters keys = new DialogParameters();
keys.Add("zen", "============zen============");
DialogService.ShowDialog(obj, keys, callback =>
{
if (callback.Result == ButtonResult.OK)
{
//弹窗传递的参数信息
string ss = callback.Parameters.GetValue<string>("Info");
}
});
}
}
}
》》》弹窗用户控件 、弹窗的ViewModel
https://i-blog.csdnimg.cn/direct/6f700b70767440a3b4afdfe99870d646.png
<UserControl x:Class="BlankApp2.Views.UCPopup"
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:local="clr-namespace:BlankApp2.Views"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="20"></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition Height="80"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock Text="{Binding Title}"></TextBlock>
<TextBlock Text="弹窗信息" FontSize="40" Grid.Row="1"></TextBlock>
<StackPanel Orientation="Horizontal" Margin="10" HorizontalAlignment="Right" Grid.Row="2">
<Button Content="确 定" Margin="10" Command="{Binding OKCommand}"></Button>
<Button Content="取 消" Margin="10" Command="{Binding CancelCommand}"></Button>
</StackPanel>
</Grid>
</UserControl>
using Prism.Commands;
using Prism.Dialogs;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace BlankApp2.ViewModels
{
public class UCPopupViewModel : IDialogAware
{
public string Title { get; set; }
public DialogCloseListener RequestClose { get; set; }
public DelegateCommand CancelCommand { get; set; }
public DelegateCommand OKCommand { get; set; }
public UCPopupViewModel()
{
CancelCommand = new DelegateCommand(Cancel);
OKCommand = new DelegateCommand(OKcmd);
}
private void OKcmd()
{
DialogParameters keys = new DialogParameters();
keys.Add("Info", "======INDO==========");
RequestClose.Invoke(keys, ButtonResult.OK);
}
private void Cancel()
{
RequestClose.Invoke(ButtonResult.Cancel);
}
//是否准许关闭弹窗
public bool CanCloseDialog()
{
return true;
}
//弹窗关闭时【窗体哪个 X】
public void OnDialogClosed()
{
DialogParameters keys = new DialogParameters();
keys.Add("Info", "======INDO==========");
RequestClose.Invoke(keys, ButtonResult.OK);
//throw new NotImplementedException();
}
//弹窗弹出时触发
public void OnDialogOpened(IDialogParameters parameters)
{
if (parameters.ContainsKey("zen"))
{
this.Title = parameters.GetValue<string>("zen");
}
//throw new NotImplementedException();
}
}
}
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