WPF Prism 7.0+ IDialogAware（对话框）

 

示例：Prism 创建对话 Dialog，实现 IDialogAware 接口

第一步：创建区域

public partial class MessageControl : UserControl
{
    public MessageControl()
    {
        InitializeComponent();
        DataContext = new MessageControlViewModel();
    }
}
public partial class MessageControlViewModel : BindableBase, IDialogAware
{
    /// <summary>
    /// 确定按钮
    /// </summary>
    public DelegateCommand ConfirmCommand { set; get; }
    /// <summary>
    /// 取消按钮
    /// </summary>
    public DelegateCommand CacleCommand { set; get; }
    public MessageControlViewModel()
    {
        ConfirmCommand = new DelegateCommand(() =>
        {
            DialogParameters keyValuePairs = new DialogParameters();
            keyValuePairs.Add("showdialog", true);
            RequestClose?.Invoke(new DialogResult(ButtonResult.OK, keyValuePairs));
        });
        CacleCommand = new DelegateCommand(() =>
        {
            RequestClose?.Invoke(new DialogResult(ButtonResult.No));
        });
    }
    private string _title = string.Empty;
    public string Title
    {
        get { return _title; }
        //数据同步方法：RaisePropertyChanged();
        set { _title = value; RaisePropertyChanged(); }
    }

    public event Action<IDialogResult> RequestClose;

    public bool CanCloseDialog()
    {
        return true;
    }
    public void OnDialogClosed()
    {
    }
    public void OnDialogOpened(IDialogParameters parameters)
    {
        Title = parameters.GetValue<string>("value");
    }
}

 

 第二步：IOC注入

protected override void RegisterTypes(IContainerRegistry containerRegistry)
{
            //仅注册视图
            containerRegistry.RegisterDialog<MessageDialog>();

            //注册视图时绑定VM
            containerRegistry.RegisterDialog<MessageDialog, MessageDialogViewModel>();

            //添加别名
            containerRegistry.RegisterDialog<MessageDialog>("DialogName");
}