A back button in xaml & C#

Question

1.00/5 (1 vote)

See more:

Okay, so I have been learning Xaml and C# for a little now. I designed a application using some basic navigation however I've stumbled into a problem. So for instance I created different dashboards for different types of users. Those only have access to certain pages. Here is an example:

I have a page called user management that views all users within the application. Only user A should be allowed to view the contents. In that page there is a create button, this navigates user A to create a new user. Well the problem is, user B needs to be able to create a user but user B should not be allowed to to hit the back button and gain access to the User management screen that only User A can view.

I understand why it does it. I just don't know of a way to work around it. Hence the fact I'm learning...

Here is the line of code I use when I navigate using my current back button:

this.NavigationServices.Navigate(new Views.UserManage.xaml());

What can I do to make it so it always refers you back to the previous screen? (Also I don't want that ugly navigation bar at the top that has the arrow.) I prefer to make it as clean as possible.

If someone can give me some extra detail when explaining it that would be great! I am relatively new and hopefully it won't be a huge task..

Thanks!

What I have tried:

Google, YouTube, I don't know exact key words to type in and haven't found a tutorial on this.

Posted 23-Mar-17 17:34pm

Member 13075342

Updated 23-Mar-17 19:16pm

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Graeme_Grant · Answer 1 · 2017-03-23T19:15:00

There is no way in WPF Navigation to look at the Back Stack of pages.

You have a number of different choices. Here are two off the top of my head:

1. Clear history when "User B" logs in:

C#

public void ClearHistory()
 {
     if (!this.Frame.CanGoBack && !this.Frame.CanGoForward)
     {
         return;
     }

     var entry = this.Frame.RemoveBackEntry();
     while (entry != null)
     {
          entry = this.Frame.RemoveBackEntry();
     }

     this.Frame.Navigate(new PageFunction<string>() { RemoveFromJournal = true });
}

2. Custom History tracking:

You would need to hook into the NavigationService events and keep a history yourself. Then you can peek back into the history and issue a NavigationService.RemoveBackEntry() to remove the page that "User B" is not allowed access to.