Changing color of label in C#, WPF, MVVM -

i have made program several pages. simple program, have @ top area labels @ page are. every page new label defined. labels defined in dockpanel.xaml later included mainwindow.xaml.

i made current page label in different color.

my code:

my dockpanel.xaml first label (others same number change)

<label name="label1" foreground="{binding path=label1.color}" content="welcome" grid.column="0" horizontalalignment="left" fontsize="20" fontweight="light" fontstyle="italic"/> 

my dockpanelviewmodel

public class dockpanelviewmodel : viewmodelbase {     #region member fields      #endregion      #region constructors     /// <summary>     /// default constructor     /// </summary>     public dockpanelviewmodel()     {     }     #endregion      #region properties      protected brush _color;     public brush color     {         { return _color; }         set         {             _color = value;             notifypropertychanged("color");         }     }     #endregion  } 

later definitions of viewmodel 1 of page:

label1.color = system.windows.media.brushes.yellow; 

the point code dont want change color , dont know wrong :)

please help. thanks!

added .. pageviewmodelbase

public virtual dockpanelviewmodel label1     {                 {             if (_label1 == null)             {                 _label1 = new dockpanelviewmodel()                 {                     //text = "back",                     color = system.windows.media.brushes.yellow,                  };             }             return _label1;         }         set         {             _label1 = value;             notifypropertychanged("label1");         }     } 

it's getting worse updated question. please optimize , fix namings!

to bring work, here's suggestion:

1. your dockpanelviewmodel seems ok
2. create instance of dockpanelviewmodel , assign datacontext of view
3. bind foreground property of label {binding path=color} (which color property of viewmodel
4. remove "name" of label (you don't need in proper mvvm
5. whenever want change color of label, change color property if viewmodel-instance (the 1 assigned view's datacontext)
6. i have no idea public virtual dockpanelviewmodel label1 added question is. me seems unnecessary, delete it.

here's working example: view:

<grid>     <grid.columndefinitions>         <columndefinition width="*"/>         <columndefinition width="*"/>     </grid.columndefinitions>     <label grid.column="0" foreground="{binding path=labelcolor}" content="welcome" fontsize="20" fontweight="light" fontstyle="italic"/>     <stackpanel grid.column="1">         <button content="red" width="75" command="{binding changecolorcommand}" commandparameter="#ff0000"/>         <button content="green" width="75" command="{binding changecolorcommand}" commandparameter="#00ff00" />     </stackpanel> </grid> 

view-code:

public mainwindow() {     initializecomponent();     var vm = new viewmodel();     datacontext = vm; } 

viewmodel:

public class viewmodel : inotifypropertychanged {     public icommand changecolorcommand { get; set; }      protected brush _color;     public brush labelcolor     {         { return _color; }         set         {             _color = value;             onpropertychange();         }     }      public viewmodel()     {         labelcolor = brushes.yellow;         changecolorcommand = new relaycommand((o) =>         {             labelcolor = new brushconverter().convertfromstring(o.tostring()) solidcolorbrush;         });     }      public event propertychangedeventhandler propertychanged;      private void onpropertychange([callermembername] string propertyname = null)     {         var handler = propertychanged;         if (handler != null)         {             propertychanged(this, new propertychangedeventargs(propertyname));         }     } } 

relaycommand well-known standard class found everywhere on web.