I have 3 BladeItems in another page. And I want to navigate from MainPage to that page and bring the requested BladeItem into view. But it is not working.
I first thought it was because that the page has not been loaded. So I put it into the Page_Loaded. However, it is still now working. Why is that?
private void Page_Loaded(object sender, RoutedEventArgs e)
{
TitleBarHelper.SetDarkTitleBar();
Window.Current.SetTitleBar(AppTitleBar);
UpdateTitleBarLayout(Windows.ApplicationModel.Core.CoreApplication.GetCurrentView().TitleBar);
FullMediaControl.Update();
SetMusic(MediaHelper.CurrentMusic);
FullPlaylistControl.ScrollToMusic(MediaHelper.CurrentMusic);
if (MusicInfoRequestedWhenUnloaded)
{
MusicPropertyBladeItem.StartBringIntoView();
MusicInfoRequestedWhenUnloaded = false;
}
else if (LyricsRequestedWhenUnloaded)
{
LyricsBladeItem.StartBringIntoView();
LyricsRequestedWhenUnloaded = false;
}
}
Source Page Code is here. This page can be navigated using the "Show Lyrics" or "Music Info" item in the MenuFlyout at the right bottom more button.
And actually the FullPlaylistControl.ScrollToMusic in the code above is also not working. It just scrolls to a row in a ListView. I guess they might be the same reason.
This is the documentation for StartBringIntoView.
According to the instructions in the documentation, this method is only possible when the control is rendered on the visual tree, so you need to modify it when you call the method.
You want MusicPropertyBladeItem.StartBringIntoView() to work, you need to call it in the MusicPropertyBladeItem_Loaded event. For the same reason, you need to call ScrollToMusic when the FullPlaylistControl is loaded.
Page_Loaded only means that the page is loaded, but it doesn't mean that the controls have been rendered.
Best ragards.
Related
I'm Not good at English, Thanks in advance.
I have problem that i just cant figure out right now. I am trying to develop a UWP and im stuck implementing this functionality.
I have a Header(Navigation view) in NavPage, such as this.
As you know, The Header and The Frame in one page, frame load a View, When I click "Up" or other button(appbarButton), I want pass a Info to Frame's current page(is MainPage).
At frist, I want invoking a current page method by appBarbutton, need static.No
then, I want pass a info to that page, and handle it in OnNavigatedTo(NavigationEventArgs e)
here is problem.
this is code:
private void BackHome(object sender, RoutedEventArgs e)
{
ContentFrame.Navigate(typeof(MainPage), "*BackHome");
}
private void BackUp(object sender, RoutedEventArgs e)
{
ContentFrame.Navigate(typeof(MainPage), "*BackUp");
}
I try two buttons.
But...when I click this appbar button,it is work, info pass success, but because Navigate() method, the frame's current page is reload, Parameters passed before useless
How pass info and don't reload?
any ideas? thanks every body.
Navigate might actually not be the best suited method to call since what it actually does is telling your frame to read the content of the specified Page, something that you only want to do when your specified page is different from the one you're currently in.
Edit 1.
Do you really need to pass information to the page for the situations where you're going to keep using the same content as your frame? If not, and just in order to stop the reloading for those situations, just check if you are actually calling the Navigate method to another page.
if(ContentFrame.SourcePageType != typeof(MainPage))
ContentFrame.Navigate(typeof(MainPage), "*BackUp");
I have two Pages ProductSearch,ProductDetail and Im changing the Content property to Navigate between Pages. I want to know if any events are fired so I can write some code in it?
On ProductDetail Page I have UIElement property
public UIElement MainContent { get; set; }
On ProductSearch Page I Navigate to ProductDetail By setting the Content property like this:
private void OnGetDetailsClick(object sender, RoutedEventArgs e)
{
ProductDetail productDetail = new ProductDetail();
productDetail.MainContent = this.Content;
this.Content = productDetail;
}
On ProductDetail Page's Back Button I navigate back to ProductSearch:
private void OnBackButtonClick(object sender, RoutedEventArgs e)
{
this.Content = MainContent;
}
Now I want to know how can I call a method when I navigate Back to ProductSearch Page i.e how would I know that I have Navigated from ProductDetail Page? I tried to check if it loads the page but found out that When you change content of control it doesn't fire the load event of the page. Any solution?
Yea this will not execute the load event since your are only changing the content obviously.
if you want to take advantage of navigation you should check out this video. Even if its done with blend the concepts apply also with Visual STudio: https://vimeo.com/6599527 (Simple Silverlight Master/Detail Navigation App with Blend 3)
You should check out articles on master detail binding like this one: https://msdn.microsoft.com/en-us/library/cc645060(v=vs.95).aspx
The key is to take advantage of the powerful binding concepts which come with silverlight. And if you are not using deep linking you might want to consider using a user control to hide/show details instead of a extra page.
HTH
I am developing WPF MUI application.I navigate to another page using button onclick and print some text on page1.xaml . after i navigate using another button to print another text on page1.xaml .but i could not do that.my out put was not new text.it is early details only.can't reload page1.xaml .when navigating I pass the parameter and according to parameter print deference text on same page.can anyone help me?
this is my navigation code
var frame = NavigationHelper.FindFrame(null, this);
frame.Source = new Uri("../Content/Sale/SaleInvoice/Nested/saleNested.xaml", UriKind.Relative);
Have the page databound to a ViewModel. Once you want to refresh just create a new Viewmodel. It would make sense to have the execution of the reloading being done in a backgroudworker so your UI stays responsive. This is esspecially usefull if you are refreshing some resource from a webService or some other online source.
The Data bind to the page at the initial time to reload the page I'm using this method
On xaml page just add Loaded Property:
<UserControl x:Class="ModernUINavigationApp1.Pages.Page"
...
Loaded="OnLoad" >
Then Add event handler in code behind to make the page do whatever you want when it's loaded
private void OnLoad(object sender, RoutedEventArgs e)
{
}
Hope this help :D
Make sure your ViewModel implements INotifyPropertyChanged. If your Page1.xaml's DataContext is set to the ViewModel, and your XAML uses bindings properly, any change to the ViewModel will be reflected in the UI. You won't need to refresh anything. Just update the property in the ViewModel object.
If you update your question with example XAML and C#, I can be of more help.
I am currently working on an app for WP7 for my university, and need a temporary solution to a problem. Now this solution is, that I will be loading a webpage using the web browser control for WP7. For example: http://m.iastate.edu/laundry/
Now as you see on the webpage, there are certain elements I want to hide, for example the back button. For now, what I have done to handle the back button is something like this:
private void webBrowser1_Navigating(object sender, NavigatingEventArgs e)
{
// Handle loading animations
// Handle what happens when the "back" button is pressed
Uri home = new Uri("http://m.iastate.edu/");
// The the current loading address is home
// Cancel the navigation, and go back to the
// apps home page.
if (e.Uri.Equals(home))
{
e.Cancel = true;
NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
}
}
Now that works beautifully, except for the part that there is a back button on the hardware.
So my second option is to completely hide the back button ONLY on that page, and not its children. So not on http://m.iastate.edu/laundry/l/0
I am still debating on just parsing the data and displaying it in my own style, but I'm not sure if that's completely needed seeing how the data needs constant internet service and is already in a well-put format. Plus, I feel like that would be a waste of resources? Throw in your opinions on that too :)
Thanks!
You should inject a script in the page with InvokeScript.
Here is the kind of Javascript code you need to remove the back button:
// get the first child element of the header
var backButton = document.getElementsByTagName("header")[0].firstChild;
// check if it looks like a back button
if(backButton && backButton.innerText == "Back") {
// it looks like a back button, remove it
document.getElementsByTagName("header")[0].removeChild[backButton];
}
Call this script with InvokeScript:
webBrowser1.InvokeScript("eval", "(function() { "+ script +"}()");
Warning: IsScriptEnabled must be set to true on the web control
If the removal of the back button depends of the page, just test the navigating URI in C# and inject the script if neeeded.
Suppose, on Page_Load() of a page (WebForms) that I create this Control :
HtmlGenericControl optionBox = new HtmlGenericControl("div");
optionBox.Attributes["class"] = "class_1";
Than, a use will recall the page using a LinkButton. On the method called from this button, I change the class of my previous div :
protected void cmdCerca_Click(object sender, EventArgs e)
{
...
div.Attributes.Add("class", "class_2");
...
}
Well, if I watch on the rendered result, I'll see that the class of the div have been changed.
This means that, in the next call to this page (from this context, example calling cmdCerca_2_Click), that object will be recovered from the View, getting class_2, not class_1.
But, this doesnt happens if, at the end of cmdCerca_Click, I call the same page with Response.Redirect(). Seems that the View will be lost.
Why? And how can I fix it?
Hope the question is clear.
You need to add the controls in the page init event, rather than load, in order to get them into the control tree.
You must be recreating this control on every postback? In this case, your default class will be set every time.