c# - xceed wpf propertygrid collection select -

i'm new in wpf , may it's stupid question, but...) have custom properties class visualased xceed wpf propertygrid

public class shopproperties {     private readonly observablecollection<string> _cars = new observablecollection<string>();      [category(@"carsshop")]     [displayname(@"carscollection")]     public observablecollection<string> carscollection { {return _cars;}}      [browsable(false)]      private string selectedcar {get; set;} } 

what simplest , finest propertygrid editor(or custom editor) need use assign selectedcar element carscollection?

after search , reading http://wpftoolkit.codeplex.com/wikipage?title=propertygrid&referringtitle=documentation think minimum 2 ways in case.

1. customise xctk:collectioncontrol , edit xaml.

<xctk:propertygrid name="_generalpropertygrid" dockpanel.dock="top"                              showsearchbox="false" showsortoptions="false" showtitle="false" namecolumnwidth="120" borderthickness="0">   <xctk:propertygrid.editordefinitions>     <xctk:editortemplatedefinition targetproperties="carscollection">       <xctk:editortemplatedefinition.editingtemplate>         <datatemplate>           <xctk:collectioncontrol selecteditem="{binding path=selectedcar}"/>         </datatemplate>       </xctk:editortemplatedefinition.editingtemplate>     </xctk:editortemplatedefinition>   </xctk:propertygrid.editordefinitions> </xctk:propertygrid> 

2. create own usercontrol implements itypeeditor

see datails in http://wpftoolkit.codeplex.com/wikipage?title=propertygrid&referringtitle=documentation select combobox. choose way.

<usercontrol x:class="proj_namespace.carselector"  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"   xmlns:d="http://schemas.microsoft.com/expression/blend/2008"   mc:ignorable="d"   x:name="carselector"  d:designheight="25" d:designwidth="200">   <grid>     <combobox itemssource="{binding value, elementname=carselector}" selectionchanged="selector_onselectionchanged"/>   </grid> </usercontrol> 

and class code behind:

public partial class carselector : itypeeditor {     public carselector()     {         initializecomponent();     }      public static readonly dependencyproperty valueproperty =          dependencyproperty.register("value", typeof(observablecollection<string>), typeof(carselector),             new frameworkpropertymetadata(null, frameworkpropertymetadataoptions.bindstwowaybydefault));       public string value     {         { return (string)getvalue(valueproperty); }         set { setvalue(valueproperty, value); }     }      public frameworkelement resolveeditor(propertyitem propertyitem)     {         var binding = new binding("value");         binding.source = propertyitem;         binding.mode = propertyitem.isreadonly ? bindingmode.oneway : bindingmode.twoway;         bindingoperations.setbinding(this, valueproperty, binding);         return this;     }      private void selector_onselectionchanged(object sender, selectionchangedeventargs e)     {         if (sender != null)             mainwindow.instance._properties.selectedcar = (sender combobox).selecteditem string;     } } 

and add custom editor line above property

[editor(typeof(carselector), typeof(carselector))] public observablecollection<string> carscollection { { return _securities; } }