Creating System.Windows.Controls and adding Two Way Binding of a Field to a UserControle in WPF -

what want following

create usercontrole this:

public partial class myusercontrole : usercontrol 

with wrappanel inside add controls , stuff to

<wrappanel margin="0,0,0,41" name="wrappanel1" /> 

this class has 2 buttons cancel or apply settings in window. window later gets open this

window w = new window();  w.sizetocontent = system.windows.sizetocontent.widthandheight; w.content = myclass.getmyusercontrole(); bool? t = w.showdialog(); 

where myclass special class creates usercontrole , adds stuff wants changed in wrappanel

now in myclass have simple point

  system.drawing.point mypoint = new point(10,15); 

and getmyusercontrole() looks like

  public myusercontrole  getmyusercontrole(){       myusercontrole uc = new myusercontrole();       wpf.textbox x1 = new wpf.textbox();       system.windows.data.binding bindingx = new system.windows.data.binding("x");                bindingx.source = mypoint;       bindingx.mode = system.windows.data.bindingmode.twoway;       x1.setbinding(wpf.textbox.textproperty, bindingx);       uc.addhere.add(x1);       return uc;   } 

the textbox filled changes dont change source. how can fix this?

edit: can add

  private myusercontrole myucsave = null; 

to class , set

  myucsave = uc;  

at end of getmyusercontrole() , check @ start

 myucsave != null return myucsave; 

that fixes "save" of textbox, underlying mypoint doesnt change.

edit: maybe there more simple case: create simple form , add mainwindow via constructor

  public partial class mainwindow : window        public mainwindow()     {         initializecomponent();               textbox x1 = new textbox();         textbox y1 = new textbox();         x1.margin = new thickness(0, 0, 20, 20);         y1.margin = new thickness(0, 0, 100, 100);         x1.width = 100;         y1.width = 100;         x1.height = 200;         y1.height = 200;         system.windows.data.binding bindingx = new system.windows.data.binding("x");         system.windows.data.binding bindingy = new system.windows.data.binding("x");         bindingx.mode = system.windows.data.bindingmode.twoway;         bindingy.mode = system.windows.data.bindingmode.twoway;         bindingx.source = mypoint;         bindingy.source = mypoint;         x1.setbinding(textbox.textproperty, bindingx);         y1.setbinding(textbox.textproperty, bindingy);         this.maingrid.children.add(y1);         this.maingrid.children.add(x1);       }      point mypoint = new point(100, 200); 

this should create 2 textboxes x1,y1 linked same source (mypoint.x)? when change 1 thing other textbox doesn't change neither source.