关闭OpenFileDialog时如何更改视图? [英] How to Change View when OpenFileDialog is Closed?

问题描述

这是我的第一个MVVM应用程序，我想知道在用户使用OpenFileDialog完成操作后如何切换到另一个视图.

This is my first MVVM app, and I am wondering how to switch to another view after the user is done with the OpenFileDialog.

当前使用的更改视图技术是从此处借用的

The changing view technique currently using is borrowed from here.

换句话说，怎么打电话:

In other word, how to call :

private void ExecuteGridViewCommand()
{
    CurrentViewModel = MainViewModel._gridViewModel;
}

由于对话框不是XAML控件，因此我无法跟踪用户单击对话框的打开"按钮时出现的问题.

The problem rises since I couldn't track when the user clicks the Open button of the Dialog since the Dialog is not a XAML control.

    private static ViewModelBase _currentViewModel;
    public ViewModelBase CurrentViewModel
    {
        get { return _currentViewModel; }
        set
        {
            if (_currentViewModel != value)
            {
                _currentViewModel = value;
                OnPropertyChanged();
            }
        }
    }

推荐答案

早些时候，有人发送了(已删除)一个令人鼓舞(谢谢)的答案，即使该方法开箱即用，也可能是由于实例化了一个新实例的ViewModelLocator().

Somebody earlier sent an answer (deleted) that was inspiring (thanks) even though it didn't work out of the box, maybe due to instantiating a new instance of ViewModelLocator().

是这样的:

private readonly MainViewModel _mainViewModel = (new ViewModelLocator().Main);
_mainViewModel.ExcuteGridView();

调整后，现在我有了它，它可以正常工作:

After tweaking, now I have this, and it works:

ViewModelLocator.Main.ExcuteGridView();

为了使它起作用，我不得不在ViewModelLocator内部将Main声明为静态的:

In order for this to work though, I had to declare the Main as static inside the ViewModelLocator:

 public static MainViewModel Main
    {
        get
        {
            return _main;
        }
    }

这篇关于关闭OpenFileDialog时如何更改视图?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！