c# - Universal windows app to send data from one page to another -

i had partitioned mainpage.xaml in 2 parts. left part has buttons give command change right part new page. created 3 right pages ex. rightpage1, rightpage2 , rightpage3. problem that, want show data on left part after operations done on rightpage1, 2 or 3. should follow pattern fulfill approach? or can directly in code behind?

all researched giving me solution navigate page , send data in parameter. don't want open page again, because it's opened on left side of mainpage. please me solve situation.

in rightpage 1, on submit click event want show message in mainpage.xaml's left part in textblock lblclassname.

homepage.xaml  <grid>     <grid.columndefinitions>         <columndefinition width="5*"/>         <columndefinition width="3*"/>     </grid.columndefinitions>     <relativepanel>         <button x:name="btn1"                 content="button 1"                 height="50" width="100" margin="0,30,0,0"                 relativepanel.alignhorizontalcenterwithpanel="true"                 click="btn1_click"/>         <button x:name="btn2"                 content="button 2"                 height="50" width="100" margin="0,30,0,0"                 relativepanel.alignhorizontalcenterwithpanel="true"                 relativepanel.below="btn1"                 click="btn2_click"/>         <button x:name="btn3"                 content="button 3"                 height="50" width="100" margin="0,30,0,0"                 relativepanel.alignhorizontalcenterwithpanel="true"                 relativepanel.below="btn2"                 click="btn3_click"/>          <textblock x:name="lblwrite"                    text="write : "                    visibility="visible"                    relativepanel.below="btn3"/>         <textbox x:name="txtwrite"                  height="50" width="150"                  visibility="collapsed"                  relativepanel.below="lblwrite"/>         <button x:name="btn3_1"                 height="50" width="100"                 visibility="collapsed"                 content="send"                 relativepanel.below="txtwrite"/>          <textblock x:name="lblclassname"/>      </relativepanel>     <frame x:name="rightpage"            grid.column="1"/> </grid>   rightpage1.xaml  <grid background="beige">         <textblock x:name="heading"                    text="teacher module"                    relativepanel.alignhorizontalcenterwithpanel="true"/>         <textblock x:name="lblname"                    text="name" margin="0,30,0,0"                    relativepanel.alignhorizontalcenterwithpanel="true"                    relativepanel.below="heading"/>         <textbox x:name="txtname"                  height="30" width="150" margin="30,30,0,0"                  relativepanel.rightof="lblname"                  relativepanel.below="heading"/>         <textblock x:name="lblclass"                    text="class" margin="0,30,0,0"                    relativepanel.alignhorizontalcenterwithpanel="true"                    relativepanel.below="lblname"/>         <textbox x:name="txtclass"                  height="30" width="150" margin="30,10,0,0"                  relativepanel.rightof="lblclass"                  relativepanel.below="txtname"/>         <button x:name="btnsumbit"                 content="submit"                 height="50" width="100" margin="0,30,0,0"                 relativepanel.alignhorizontalcenterwithpanel="true"                 relativepanel.below="lblclass"/>         <button x:name="btncancel"                 content="cancel"                 height="50" width="100" margin="30,30,0,0"                 relativepanel.alignhorizontalcenterwithpanel="true"                 relativepanel.below="lblclass"                 relativepanel.rightof="btnsumbit"/>          <textblock x:name="lblresult"                    margin="0,30,0,0"                    relativepanel.below="btnsumbit"/>     </relativepanel> </grid> 

i think can directly in code behind. example:

in code-behind of homepage.xaml, can define static field in homepage represent homepage , add public method change textblock's text.

public sealed partial class homepage : page {     //define static field represent homepage     public static homepage home;      public homepage()     {         this.initializecomponent();         //initialize home field         home = this;     }      ...      /// <summary>     /// show message in textblock lblclassname     /// </summary>     /// <param name="message">message been shown</param>     public void changemessage(string message)     {         this.lblclassname.text = message;     } } 

then in submit click event, can call changemessage method show message.

private void btnsumbit_click(object sender, routedeventargs e) {     homepage.home?.changemessage("the message want show"); }