小编kaj*_*ajo的帖子

这是App.xaml中的 XAML代码:

<Application x:Class="Company.Product.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    >
    <Application.Resources>
      <ResourceDictionary>
          <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="/Company.Windows.Themes.Theme1;component/Themes/System.Windows.xaml"/>
            <ResourceDictionary Source="/Company.Windows.Themes.Theme1;component/Themes/Company.Windows.Controls.xaml"/>
            <ResourceDictionary Source="/Company.Windows.Themes.Theme1;component/Themes/Company.Windows.Controls.Data.xaml"/>               
          </ResourceDictionary.MergedDictionaries>
      </ResourceDictionary>
    </Application.Resources>
</Application>

相当于:

App.xaml:

<Application x:Class="Company.Product.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    >
</Application>

在App.xaml.cs中:

public partial class App : Application
{
    public App()
    {               
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
        {
            Source = new Uri("/Company.Windows.Themes.Theme1;component/Themes/System.Windows.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
        {
            Source = new Uri("/Company.Windows.Themes.Theme1;component/Themes/Company.Windows.Controls.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
        {
            Source = new Uri("/Company.Windows.Themes.Theme1;component/Themes/Company.Windows.Controls.Data.xaml", UriKind.RelativeOrAbsolute)
        });
    }
}

一面注意:我是否需要调用Application.Current.Resources.MergedDictionaries.Clear(); 在这种情况下,我开始添加合并的词典？我想目前默认的MergedDictionaries集合最初是空的.

我正在编写我的第一个WPF应用程序,我想请求您帮助解决我遇到的问题.

我试图遵循MVVM模式,我来到了需要实现模态对话框的地步.我用谷歌搜索/阅读了一段时间,我能够找到解决方案.然而,当重构时,我遇到了一个困境,即使用DI(构造函数注入)作为服务定位器的替代.

我将参考这些:http://pastebin.com/S6xNjtWW.

我非常喜欢Roboblob的方法:

第一:他创建了一个模态对话框(界面)的抽象.我命名接口IModalDialog,它是这样的:

public interface IModalDialog
{
    bool? DialogResult { get; set; }
    object DataContext { get; set; }

    void Show();
    bool? ShowDialog();
    void Close();        

    event EventHandler Closed;
}

第二:模态对话服务的抽象:

public interface IModalDialogService
{       
    void ShowDialog<TDialogViewModel>(IModalDialog view, TDialogViewModel viewModel, Action<TDialogViewModel> onDialogClose) where TDialogViewModel : class;        
    void ShowDialog<TDialogViewModel>(IModalDialog view, TDialogViewModel viewModel) where TDialogViewModel : class;        
}

第三: IModalDialogService的具体实现:

    public class ModalDialogService : IModalDialogService
    {
    public void ShowDialog<TDialogViewModel>(IModalDialog view, TDialogViewModel viewModel, Action<TDialogViewModel> onDialogClose) where …