WPF navigation-based Windows Applications

Use navigation in WPF. The content is organized in the page element, and the page can be hosted in the navigationwindow or frame.

These containers provide a page-to-page navigation, a log that records all navigation, and a series of navigation-related events.

<Navigationwindow xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns: x = "http://schemas.microsoft.com/winfx/2006/xaml" X: class = "wpf_test.mainwindow" Title = "form" Source = "page1.xaml"> </navigationwindow>

 

Navigation between pages:

1. Call the navigate Method

// Page1.xaml navigate to page2.xamlpage2 P2 = new page2 (); navigationservice. navigate (P2); // navigationservice. navigate (New uri ("page2.xaml", urikind. Relative ));

2. Use hyperlinks (inside the textblock tag)

<Textblock> 
 
3. Use navigation logs
Each navigation container contains logs that record the navigation history. The navigation log provides the logic of backward and forward.
Navigationwindow always has a navigation log, which may not exist in the frame, but can be set through the journalownership attribute. You can set false through navigationuivisibility to hide the navigation button.
// If you can retreat if (navigationservice. cangoforward) {navigationservice. goforward ();} else {navigationservice. Goback ();}
 
Data transmission between pages:
1. send data to the page
// Define a parameter namevaluecollection NVC = new namevaluecollection (); NVC ["num"] = "Lulu"; NVC ["num2"] = "66 "; // instantiate the page page2 P2 = new page2 (); // subscribe to the navigation loadcompleted event and add your own processing method to access the navigationservice parameter. loadcompleted + = p2.onloadcompleted; // page1.xaml navigate to page2.xaml and pass an NVC parameter navigationservice. navigate (P2, NVC );

// Defined in page2.xaml. CS to obtain the input parameter public void onloadcompleted (Object sender, navigationeventargs e) {If (E. extradata! = NULL) {namevaluecollection NVC = E. extradata as namevaluecollection; // use the obtained parameter to reset the label value label1.content = NVC [0];}
2. Add a parameter constructor to the page to transfer values between pages.
// Instantiate the page to navigate to page2 P2 = new page2 ("parameters from page1.xaml"); // navigate page1.xaml to page2.xamlnavigationservice. navigate (P2 );
// Define a parameter-included constructor that can be used to receive information transmitted on other pages. Public page2 (string value): this () {label1.content = value}
3. The properties set of the Application Object shares data globally.
Application.Current.Properties["globe"] = "globe";
Pagefunction returns data from the page:
Processing allows the user to navigate to a page and perform some operations. After the operation is completed, the user automatically returns to the previous page to avoid adverse consequences in navigation logs.
Pagefunction1 PGF = new pagefunction1 (); // process the return event PGF of pagefunction. return + = onreturn; // page1.xaml navigate to page2.xamlnavigationservice. navigate (PGF); // process pagefunction1 page return value private void onreturn (Object sender, returneventargs <string> E) {// reset the button2 content value with the returned result button2.content = E. result ;}
/* Pagefunction
 
  
Is a generic type. String is the returned data type */public partial class pagefunction1: pagefunction <string> {public pagefunction1 () {initializecomponent ();} private void button1_click (Object sender, routedeventargs e) {// indicates that the processing is complete and the current textbox1 value is returned to this. onreturn (New returneventargs <string> (this. textbox1.text ));}}
 
Custom dialog box:
<Window X: class = "wpf_test.mydialog" xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns: X = "http://schemas.microsoft.com/winfx/2006/xaml" Title = "mydialog" Height = "148" width = "280"> <grid> <label content = "Your Name: "Height =" 28 "horizontalalignment =" Left "margin =" 21,9, 108 "name =" label1 "verticalignment =" TOP "width =" "/> <textbox Height =" 23 "margin =, 27,0 "name =" textbox1 "verticalignment =" TOP "/> <button content =" Confirm "Height =" 23 "horizontalalignment =" Left "margin =" 37,70, 0, 0 "name =" button1 "verticalignment =" TOP "width =" 75 "Click =" button#click "/> <button content =" Remove "Height =" 23 "horizontalalignment =" right "margin =" 0, 70, 41,0 "name =" button2 "verticalignment =" TOP "width =" 75 "Click =" button2_click "/> </GRID> </WINDOW>
Private void button#click (Object sender, routedeventargs e) {// The form is displayed successfully. This is automatically disabled. dialogresult = true;} private void button2_click (Object sender, routedeventargs e) {// This. dialogresult = false ;}
Call custom dialog box
Mydialog MD = new mydialog (); Md. title = "Custom dialog box"; Md. windowstartuplocation = windowstartuplocation. centerowner; // the display window is blocked in the dialog box mode. showdilif returns a boolif (MD. showdialog () = true) {// (button) sender ). foreground = brushes. coral ;}