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
code bean1 天前
【WPF】WPF 自定义控件之依赖属性
wpf
上元星如雨1 天前
WPF 加载和显示 GIF 图片的完整指南
wpf
微小冷2 天前
WPF中ListView控件详解
c#·wpf·数据绑定·listview·bingding
专注VB编程开发20年3 天前
WPF,Winform,HTML5网页,哪个UI开发速度最快?
大数据·c#·wpf
YANQ6623 天前
3.1 WPF画折线图、直方图、饼状图
wpf
上元星如雨3 天前
WPF demo:全屏加载界面
wpf
深漂阿碉3 天前
WPF自定义日历选择控件
wpf
六点的晨曦3 天前
WPF的三轴机械手控件动画
wpf
军训猫猫头3 天前
5.浏览本地文件获取路径与文件名称 C#例子 WPF例子
开发语言·c#·wpf
步、步、为营4 天前
.NET + WPF框架开发聊天、网盘、信息发布、视频播放功能
.net·wpf·音视频