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1、新建项目wpfApp6，添加Nuget引用，并初始化App.xaml 及 cs 类
app.cs 如下
public partial class App : PrismApplication { protected override Window CreateShell() { return Container.Resolve<MainView>(); } protected override void RegisterTypes(IContainerRegistry containerRegistry) { containerRegistry.RegisterDialog<UserControlA, UserControlAModel>("UserControlA"); } }
app.xaml 如下：
<Prism:PrismApplication x:Class="WpfApp6.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:WpfApp6" xmlns:Prism="http://prismlibrary.com/" > <Application.Resources> </Application.Resources> </Prism:PrismApplication>
说明如下：
app.cs 中设定了启动窗体
return Container.Resolve<MainView>();
app.cs 中注入了一个对话框，名称为：UserControlA ，并设定了viewModel数据上下文： UserControlAModel
containerRegistry.RegisterDialog<UserControlA, UserControlAModel>("UserControlA");
2、启动窗体
启动窗体必须写在Views文件夹中，且必须以View结尾，启动窗体的viewModel必须放在ViewModels文件夹中，且必须以Model结尾
xaml
<Window x:Class="WpfApp6.Views.MainView" 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:WpfApp6.Views" xmlns:Prism="http://prismlibrary.com/" Prism:ViewModelLocator.AutoWireViewModel="true" mc:Ignorable="d" Title="MainView" Height="450" Width="800"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="auto"/> </Grid.RowDefinitions> <StackPanel Orientation="Horizontal"> <Button Content="点击并弹出用户控件" Margin="5" Height="35" Width="150" Command="{Binding BtnCommand}" CommandParameter="UserControlA"></Button> </StackPanel> </Grid> </Window>
viewModel如下：
public class MainViewModel : BindableBase { /// <summary> /// 窗体Button按钮事件，用于点击后，弹出框 /// </summary> public DelegateCommand<string> BtnCommand { get; set; } /// <summary> /// 引入Prism 的 DialogService 服务，它可以弹出用户控件，或者窗体 /// </summary> private readonly IDialogService dialogService; public MainViewModel(IDialogService dialogService) { BtnCommand = new DelegateCommand<string>(open); this.dialogService = dialogService; } private void open(string obj) { //弹框传递的参数，键值对 IDialogParameters parameters = new DialogParameters(); parameters.Add("schoolId", 1); parameters.Add("schoolName", "河南大学"); //弹出框 并传递参数、设定弹出窗体关闭时的回调函数 dialogService.ShowDialog(obj, parameters,callback); } /// <summary> /// 弹出窗体关闭时的回调函数 /// </summary> /// <param name="result"></param> private void callback(IDialogResult result) { if (result.Result == ButtonResult.OK) { var closeParam = result.Parameters.GetValue<string>("closeParam"); } } }
3、弹出的用户控件
xaml
<UserControl x:Class="WpfApp6.UserControls.UserControlA" 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:WpfApp6.UserControls" mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="auto"/> <RowDefinition /> <RowDefinition Height="auto"/> </Grid.RowDefinitions> <TextBlock Text="温馨提示" FontSize="30" Grid.Row="0"/> <TextBlock Text="我是用户控件A" FontSize="30" Grid.Row="1" TextAlignment="Center"/> <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Right" Margin="5"> <Button Height="30" Width="100" Content="确定" Margin="5" Command="{Binding saveCommand}"/> <Button Height="30" Width="100" Content="取消" Margin="5" Command="{Binding cancelCommand}"/> </StackPanel> </Grid> </UserControl>
viewModel如下
using Prism.Commands; using Prism.Services.Dialogs; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace WpfApp6.UserControlModels { /// <summary> /// 被弹出的框，用户控件 /// </summary> public class UserControlAModel : IDialogAware { public string Title { get; set; } /// <summary> /// 关闭窗体请求事件 /// </summary> public event Action<IDialogResult> RequestClose; /// <summary> /// 保存按钮事件 /// </summary> public DelegateCommand saveCommand { get; set; } /// <summary> /// 取消按钮事件 /// </summary> public DelegateCommand cancelCommand { get; set; } public UserControlAModel() { this.Title = "用户控件A"; saveCommand = new DelegateCommand(save); cancelCommand = new DelegateCommand(cancel); } /// <summary> /// 保存，关闭窗体，并传值给主窗体 /// </summary> private void save() { OnDialogClosed(); } /// <summary> /// 取消，直接关闭窗体 /// </summary> private void cancel() { RequestClose.Invoke(new DialogResult(ButtonResult.No)); } /// <summary> /// 是否可关闭窗体，可以写一些业务逻辑，这里直接返回True /// </summary> /// <returns></returns> public bool CanCloseDialog() { return true; } /// <summary> /// 关闭窗体，并传值给主窗体 /// </summary> public void OnDialogClosed() { IDialogParameters parameters = new DialogParameters(); parameters.Add("closeParam", "我是closeParam值"); RequestClose?.Invoke(new DialogResult(ButtonResult.OK, parameters)); } /// <summary> /// 窗体打开后，接收主窗体传递的参数，并赋值给窗体的Title属性 /// </summary> /// <param name="parameters"></param> public void OnDialogOpened(IDialogParameters parameters) { var schoolName = parameters.GetValue<string>("schoolName"); var Id = parameters.GetValue<int>("Id"); this.Title = schoolName + "_" + Id; } } }
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