客户端添加IDialogService 弹窗服务
在首页点击添加备忘录或待办事项按钮的时候，希望有一个弹窗，进行相对应的内容添加操作。
一.在Views文件夹中，再创建一个Dialog 文件夹，用于放置备忘录和待办事项的弹窗界面。
1.1 备忘录（AddToDoView.xaml）界面设计
XML
<UserControl x:Class="MyToDo.Views.Dialog.AddMemoView"
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:MyToDo.Views.Dialog"
xmlns:md="http://materialdesigninxaml.net/winfx/xaml/themes"
mc:Ignorable="d"
Width="450" Height="280">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition/>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>
<!--标题-->
<TextBlock Text="添加待办" FontWeight="Bold" FontSize="20" Padding="20,10" />
<!--中间内容部分-->
<DockPanel Grid.Row="1" LastChildFill="False">
<StackPanel DockPanel.Dock="Top" Orientation="Horizontal" Margin="20,10">
<TextBlock Text="状态:" />
<ComboBox>
<ComboBoxItem>待办</ComboBoxItem>
<ComboBoxItem>已完成</ComboBoxItem>
</ComboBox>
</StackPanel>
<TextBox Margin="20,0" md:HintAssist.Hint="请输入待办概要" DockPanel.Dock="Top"/>
<TextBox Margin="20,10" md:HintAssist.Hint="请输入待办内容" DockPanel.Dock="Top"
TextWrapping="Wrap" AcceptsReturn="True" MinHeight="100" />
</DockPanel>
<!--底部按钮-->
<StackPanel Grid.Row="2" Margin="10" Orientation="Horizontal" HorizontalAlignment="Right">
<Button Content="取消" Margin="0,0,10,0" Style="{StaticResource MaterialDesignOutlinedButton}"/>
<Button Content="确认"/>
</StackPanel>
</Grid>
</UserControl>TextBox 其他属性介绍
TextWrapping：设置TextBox 是否换行
AcceptsReturn：允许输入多行文本
MinHeight：设置最小高度
1.2 待办事项（AddMemoView.xaml）界面设计
XML
<UserControl x:Class="MyToDo.Views.Dialog.AddMemoView"
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:MyToDo.Views.Dialog"
xmlns:md="http://materialdesigninxaml.net/winfx/xaml/themes"
mc:Ignorable="d"
Width="450" Height="280">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition/>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>
<!--标题-->
<TextBlock Text="添加备忘录" FontWeight="Bold" FontSize="20" Padding="20,10" />
<!--中间内容部分-->
<DockPanel Grid.Row="1" LastChildFill="False">
<TextBox Margin="20,0" md:HintAssist.Hint="请输入备忘录概要" DockPanel.Dock="Top"/>
<TextBox Margin="20,10" md:HintAssist.Hint="请输入备忘录内容" DockPanel.Dock="Top"
TextWrapping="Wrap" AcceptsReturn="True" MinHeight="100" />
</DockPanel>
<!--底部按钮-->
<StackPanel Grid.Row="2" Margin="10" Orientation="Horizontal" HorizontalAlignment="Right">
<Button Content="取消" Margin="0,0,10,0" Style="{StaticResource MaterialDesignOutlinedButton}"/>
<Button Content="确认"/>
</StackPanel>
</Grid>
</UserControl>二.界面设计完成后,接着在ViewModel 中，同样创建一个Dialog 文件夹，放置对应的界面后台处理逻辑。并且要继承自 IDialogAware 接口。
2.1 创建 AddToDoViewModel 类，继承 IDialogAware接口，并实现接口。
cs
public class AddToDoViewModel : IDialogAware
{
public string Title { get; set; }
public event Action<IDialogResult> RequestClose;
public bool CanCloseDialog()
{
return true;
}
public void OnDialogClosed()
{
}
public void OnDialogOpened(IDialogParameters parameters)
{
}
}2.2 创建 AddMemoViewModel类，继承 IDialogAware接口，并实现接口。
cs
public class AddMemoViewModel : IDialogAware
{
public string Title { get; set; }
public event Action<IDialogResult> RequestClose;
public bool CanCloseDialog()
{
return true;
}
public void OnDialogClosed()
{
}
public void OnDialogOpened(IDialogParameters parameters)
{
}
}三.接着，在App.xaml 中使用 RegisterDialog 注册弹窗，进行依赖注入
四.完成以上步骤后,在主窗口界面进行使用.
1.修改主窗口 IndexView.xaml 界面，当点击对应按钮时，弹出对应的Dialog.
1.1 给主页备忘录和待办事项按钮添加对应的命令，以及命令携带的参数
1.2 对应的后台（IndexViewModel）逻辑处理，并且通过IDialogService 去调用到弹窗界面
cs
public class IndexViewModel:BindableBase
{
public IndexViewModel(IDialogService dialogService)
{
TaskBars=new ObservableCollection<TaskBar>();
ToDoDtos = new ObservableCollection<ToDoDto>();
MemoDtos = new ObservableCollection<MemoDto>();
ExecuteCommand = new DelegateCommand<string>(Execute);
CreateTaskBars();
CreateTestDate();
this.dialogService = dialogService;
}
public DelegateCommand<string> ExecuteCommand { get; private set; }
private ObservableCollection<TaskBar> taskBars;
public ObservableCollection<TaskBar> TaskBars
{
get { return taskBars; }
set { taskBars = value; RaisePropertyChanged(); }
}
private ObservableCollection<ToDoDto> toDoDtos;
public ObservableCollection<ToDoDto> ToDoDtos
{
get { return toDoDtos; }
set { toDoDtos = value; RaisePropertyChanged(); }
}
private ObservableCollection<MemoDto> memoDtos;
private readonly IDialogService dialogService;
public ObservableCollection<MemoDto> MemoDtos
{
get { return memoDtos; }
set { memoDtos = value; RaisePropertyChanged(); }
}
void CreateTaskBars()
{
TaskBars.Add(new TaskBar() { Icon="ClockFast",Title="汇总",Content="9",Color="#FF0CA0FF",Target=""});
TaskBars.Add(new TaskBar() { Icon = "ClockCheckOutline", Title = "已完成", Content = "9", Color = "#FF1ECA3A", Target = "" });
TaskBars.Add(new TaskBar() { Icon = "ChartLineVariant", Title = "完成比例", Content = "9%", Color = "#FF02C6DC", Target = "" });
TaskBars.Add(new TaskBar() { Icon = "PlaylistStar", Title = "备忘录", Content = "18", Color = "#FFFFA000", Target = "" });
}
void CreateTestDate()
{
for (int i = 0; i < 10; i++)
{
ToDoDtos.Add(new ToDoDto { Title="待办"+i,Content="正在处理中.."});
MemoDtos.Add(new MemoDto { Title = "备忘" + i, Content = "我的密码" });
}
}
private void Execute(string obj)
{
switch(obj)
{
case "新增备忘录":
dialogService.Show("AddMemoView");
break;
case "新增待办事项":
dialogService.Show("AddToDoView");
break;
}
}
}注意： dialogService.Show中，直接填写字符串，就能找到对应的弹窗。是因为在App中，所有的模块注入都是根据名称来进行依赖注入的。所以写对应的字符串就可以了。