c# - How to use DynamicResource of Label content? -


i try development wpf application "dynamicresource", have label in xaml file this:

   <window.resources>         <local:bindingclass x:key="mydatasource"/>         <local:utilitygioco x:key="myutilitygame"  />     </window.resources>     <label x:name="labeltempo" datacontext="{dynamicresource myutilitygame}" content="{binding path=tempoesecuzioneesercizio}" fontfamily="arial" fontsize="21"                             foreground="gray" grid.column="0" grid.row="1" fontweight="bold"                            margin="15,40,0,0"/>

in utilitygioco class have code:

public string tempoesecuzioneesercizio {     set;     get; }  private void displaytimer(object sender, eventargs e) {     try     {         // code goes here         //console.writeline(datetime.now.hour.tostring() + ":");          if (timesecond == 59)         {             timesecond = 0;             timeminutes++;         }         //se il contatore dei minuti รจ maggiore di 0, devo mostrare una scritta altrimenti un altra         if (timeminutes > 0)         {             tempoesecuzioneesercizio = timeminutes + " min " + ++timesecond + " sec";         }         else         {             tempoesecuzioneesercizio = ++timesecond + " sec";         }     }     catch (exception ex)     {         log.error("mainwindow metodo: displaytimer ", ex);     } }

the "displaytimer" method called every time, content of label blank.

can me?

in utilitygioco class implement inotifypropertychanged interface , notify change in setter of tempoesecuzioneesercizio property.

example:

private string _tempoesecuzioneesercizio; public string tempoesecuzioneesercizio {     set      {       _tempoesecuzioneesercizio = value;       if (propertychanged != null)       {         propertychanged(this, new propertychangedeventargs("tempoesecuzioneesercizio"));       }              }      { return _tempoesecuzioneesercizio; } }

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