How does windows 8 manage stack of Pages in Frame?

问题:

How does Windows 8 manage a stack of Pages in a Frame?

And how can I clear the whole stack programmatically, as in I need to 'pop' all pages in a stack and return to first page where I started from (let's say Login Page)?

回答1:

Have a look at the methods of the Frame class

In this article (a must read about navigation):

private void ResetPageCache()
{
    var cacheSize = ((Frame) Parent).CacheSize;
    ((Frame) Parent).CacheSize = 0;
    ((Frame) Parent).CacheSize = cacheSize;
}

回答2:

In the Common/LayoutAwarePage.cs there is the following GoHome() function (in addition to the GoBack() function used with the Click-event on the standard Back button):

    // Use the navigation frame to return to the topmost page
    if (this.Frame != null)
    {
        while (this.Frame.CanGoBack) this.Frame.GoBack();
    }

回答3:

Try implementing your own Frame class, something similar to this:

http://blogs.microsoft.co.il/blogs/eshaham/archive/2012/04/30/fixing-frame-navigation-in-metro-style-apps.aspx

Then you could write a RemoveLastEntry method that basically does this:

void RemoveLastEntry()
{
    if (_navigationStack.Count > 0)
    {
        _navigationStack.Pop();
    }
}

and call this method a certain number of times.

Or you could call GoHome method which takes you back to the first screen (that would be clearing the whole stack except the first item).

I hope this'll take you in the right direction!

回答4:

best solution would be

while (this.Frame.CanGoBack)
{
    this.Frame.GoBack();
}