c# - Add textblock text to favorite list on button click -

i have 2 pages: first mainpage.xaml , second favoriteslist.xaml.

in mainpage.xaml have text block, shows dynamic text automatically.

and have button on mainpage.xaml.

from want when click on button, text appears on text block should go favorite list in favoriteslist.xaml page.

if text favorite, text appears on text block should removed favorite list on button click.

so need implement functionality textblock shows dynamically created need know how develop add favorite functionality.

textblock:

<textblock x:name="stringtextblock" text="" margin="9,-7,0,0" style="{staticresource phonetexttitle1style}" /> 

button:

<button grid.row="2" x:name="addtofavoritesbutton"      content="add" style="{staticresource buttonstyle2}" margin="2"     click="addtofavoritesbutton_click"/> 

c#

private void addtofavoritesbutton_click(object sender, routedeventargs e) { } 

listbox:

<listbox x:name="favoritelistbox" /> 

i use isolatedstoragesettings store list , compare dynamic text list in isolatedstoragesettings upon button click. on favouriteslist page, set itemsource of listbox list in isolatedstoragesettings.so here steps followed: 1. create model/class set dynamic text being shown on text block

public class favourites {     public string mytext { get; set; } } 

2. in button click event on mainpage.xaml.cs, first set dynamic text (where ever getting from) text block if need , create list and/or compare

 private void addtofavoritesbutton_click(object sender, routedeventargs e)     {         //your dynamic text set textblock         stringtextblock.text = mydynamictext;            //set value of text member variable of model/class         favourites f = new favourites();         f.mytext = mydynamictext;          isolatedstoragesettings settings = isolatedstoragesettings.applicationsettings;          /*check if "favouriteslist" key present in isolatedstoragesettings           means list had been added. if yes, retrieve           list, compare each item dynamic text, add or remove           accordingly , replace new list in isolatedstoragesettings           same key. */          if (settings.contains("favouriteslist"))         {             list<favourites> l = (list<favourites>)settings["favouriteslist"];             for(int = 0; <= l.count()-1; i++)             {                 if (l[i].equals(mydynamictext))                 {                     l.removeat(i);                     settings["favouriteslist"] = l;                 }                 else                 {                     l.add(f);                     settings["favouriteslist"] = l;                 }             }                    }          //if no key in isolatedstoragesettings means no data has been added         //in list , isolatedstoragesettings. add new data          else         {             list<favourites> l = new list<favourites>();             l.add(f);             settings["favouriteslist"] = l;         }         settings.save();     }        

now left show updated list in favouriteslist page. added 'nodata' textblock should visible when there nothing in list. else list displayed. in favouriteslist.xaml

 <listbox x:name="favoritelistbox" visibility="collapsed">             <listbox.itemtemplate>                 <datatemplate>                     <textblock text="{binding mytext}"/>                 </datatemplate>             </listbox.itemtemplate>         </listbox>          <textblock name="nodata"                     text="no data"                     visibility="collapsed"                     width="50"                     height="50"/> 

in favouriteslist.xaml.cs

 isolatedstoragesettings settings = isolatedstoragesettings.applicationsettings;         if (settings.contains("favouriteslist"))         {            list<favourites> l = (list<favourites>)settings["favouriteslist"];             if(l.count!= 0)             {                 nodata.visibility = system.windows.visibility.collapsed;                 favoritelistbox.visibility = system.windows.visibility.visible;                 favoritelistbox.itemssource = l;             }                           }          else         {             favoritelistbox.visibility = system.windows.visibility.collapsed;                                nodata.visibility = system.windows.visibility.visible;         } 

i have not tested should work. hope helps!