CODEWITHSUNDEEP
c#windows-phone-7windows-phone-8
Bahador Saket
Bahador Saket

Reputation: 1035

Windows Phone: How to stay in the Current page rather than navigating to another page?

I have two pages (MainPage and page1). when the user is in the page1, if the user press back key, following message should pop up : "Are you sure that you want to exit? "

Thus, if user press OK then it should navigate to another page, if the user press Cancel it should stay in the same page. Here is my Code:

This code is written in Page1.Xaml:

Protected override void OnBackKeyPrss(System.ComponentModel.CancelEventArgs e)
{
      MessageBoxResult res = MessageBox.show("Are you sure that you want to exit?",
      "", MessageBoxButton.OkCancel);
      if(res==MessageBoxResult.OK)
      {
         App.Navigate("/mainpage.xaml");
      }
      else
      {
            //enter code here
      }

}

However, when I am pressing cancel it is still navigating to mainpage.xaml. How can I solve this problem?

Upvotes: 2

Views: 494

Answers (3)

VasileF
VasileF

Reputation: 2916

For the classic "Are you sure you want to quit?" message dialog, you need to override the OnBackKeyPress event and use yourown MessageBox in it :

protected override void OnBackKeyPress(CancelEventArgs e)
{
    var messageBoxResult = MessageBox.Show("Are you sure you want to exit?", 
                                           "Confirm exit action",
                                           MessageBoxButton.OKCancel);
    if (messageBoxResult != MessageBoxResult.OK)
        e.Cancel = true;
    base.OnBackKeyPress(e);
}

But I would like to point the navigation logic and why you're doing something wrong. If I understood correctly, MainPage is the first page which is shown when the app is launched and Page1 is shown when navigating to it from MainPage.

When navigating backwards, instead of

NavigationService.Navigate(new Uri("MainPage.xaml", UriKind.Relative));

(you didn't write like this, but at least this is what you should have written, with correct syntax but wrong logic)

should be done like this :

NavigationService.GoBack();

This is because while navigating within your app, there will be a NavigationStack (with the navigated pages) which will only have actions of Push()(Navigation forwards) instead of also Pop()(Navigation backwards).

For more navigation information in Windows Phone, click here.

Upvotes: 0

Ajay
Ajay

Reputation: 6590

try this 

protected override void OnBackKeyPress(System.ComponentModel.CancelEventArgs e)
{
    if (MessageBox.Show("Are you sure that you want to exit?", "Confirm", MessageBoxButton.OKCancel) == MessageBoxResult.Cancel)
        e.Cancel = true;
    else
        base.OnBackKeyPress(e);
}

Upvotes: 0

Inder Kumar Rathore
Inder Kumar Rathore

Reputation: 39988

Use e.Cancel = true; to cancel back navigation.

Please correct me if I'm wrong. Your code is looking messed up. I think you last page/back page is mainpage.xaml and in OK you are again navigating to this page. If this is the case then there is no need of navigating again you can use below code.

protected override void OnBackKeyPress(System.ComponentModel.CancelEventArgs e)
{
    MessageBoxResult res = MessageBox.Show("Are you sure that you want to exit?",
    "", MessageBoxButton.OKCancel);
    if (res != MessageBoxResult.OK)
    {
        e.Cancel = true;  //when pressed cancel don't go back
    }
}

Upvotes: 1

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