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();

利用Prism 自动的 IOC 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

弹窗的 必须 必须 必须 页面控件

》》否则 报上面的错误


》》主程序

csharp 复制代码
<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>

》》主程序对应的 ViewModel

csharp 复制代码
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

csharp 复制代码
<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>
csharp 复制代码
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();
        }
    }
}
相关推荐
麻花20139 小时前
C#之WPF的C1FlexGrid空间的行加载事件和列事件变更处理动态加载的枚举值
开发语言·c#·wpf
lcintj9 小时前
【WPF】Prism学习(九)
学习·wpf·prism
界面开发小八哥9 小时前
界面控件DevExpress WPF中文教程:网格视图数据布局的列和卡片字段
wpf·界面控件·devexpress·ui开发·用户界面
△曉風殘月〆9 小时前
如何在WPF中嵌入其它程序
wpf
Crazy Struggle10 小时前
功能齐全的 WPF 自定义控件资源库(收藏版)
.net·wpf·ui控件库
shepherd枸杞泡茶1 天前
WPF动画
c#·.net·wpf
lcintj1 天前
【WPF】Prism学习(十)
学习·wpf·prism
wyh要好好学习1 天前
WPF数据加载时添加进度条
ui·wpf
code_shenbing1 天前
跨平台WPF框架Avalonia教程 三
前端·microsoft·ui·c#·wpf·跨平台·界面设计
lcintj2 天前
【WPF】Prism学习(八)
学习·wpf·prism