.net - WPF Binding problem -

i want create wpf user control exposing property called innercaption. code below

xaml code

<usercontrol x:class="mycontrol.usercontrol1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">     <grid>         <textblock name="_innercaption" > hello</textblock>     </grid> </usercontrol> 

cs code behind

namespace mycontrol {     /// <summary>     /// interaction logic usercontrol1.xaml     /// </summary>     public partial class usercontrol1 : usercontrol     {         public usercontrol1()         {             initializecomponent();         }          public textblock innercaption         {         { return (textblock)this.getvalue(innercaptionproperty); }         set { this.setvalue(innercaptionproperty, value); }         }         public static readonly dependencyproperty innercaptionproperty = dependencyproperty.register(         "innercaption", typeof(textblock), typeof(usercontrol1),new propertymetadata(false));         } } 

the question is: want users able customize innercaption @ design time such as: modifying color, font style ... don't know how sigh tried use kinds of binding. it's futile. know, binding supports binding property, right? show me way pls! :(

i think might after more in line of sub-classing textblock which´ll allow make use of existing properties on control.

public class mycaptioncontrol : textblock {  .... } 

this enables bind normally:

<mycaptioncontrol fontsize="{binding mymodelsize}" text="{binding mymodelcaption}" /> 

you´re definatly in right direction creating dependency property if want bind these properties you´ll need 1 property per bindable value. like

public static readonly dependencyproperty foregroundcolor = .... public static readonly dependencyproperty backgroundcolor = .... 

these directly mapped inner textblock-control in usercontrol mentioned think better of subclassing textblock.