wpf - Binding issue on CustomControl -

i have written customcontrol on wpf contentcontrol contentpresenter , button.

here control template (located in themes/generic.xaml) :

<controltemplate targettype="{x:type local:testcontrol}">     <stackpanel background="{templatebinding background}">         <contentpresenter content="{templatebinding content}" />         <button content="next" isenabled="{templatebinding isnextbuttonenabled}" />     </stackpanel> </controltemplate> 

here control code (testcontrol.cs) :

public class testcontrol : contentcontrol {     /// <summary>     /// identifies isnextbuttonenabled dependency property     /// </summary>     public readonly static dependencyproperty isnextbuttonenabledproperty = dependencyproperty.register(         "isnextbuttonenabled", typeof(bool), typeof(testcontrol),         new propertymetadata(true)     );      static testcontrol()     {         defaultstylekeyproperty.overridemetadata(typeof(testcontrol), new frameworkpropertymetadata(typeof(testcontrol)));     }      /// <summary>     /// gets or sets value indicating if next button of control enabled     /// </summary>     [bindableattribute(true)]     public bool isnextbuttonenabled     {                 {             return (bool)getvalue(isnextbuttonenabledproperty);         }         set         {             setvalue(isnextbuttonenabledproperty, value);         }     } } 

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i want bind value of isnextbuttonenabled of testcontrol control (for example checkbox) inside content of testcontrol itself.

so did , works (when check or uncheck checkbox, button enables or disables correctly):

mainwindow.xaml

<window x:class="wpfapplication2.mainwindow"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:local="clr-namespace:wpfapplication2"     title="mainwindow" height="350" width="525">     <grid>         <local:testcontrol isnextbuttonenabled="{binding elementname=cb, path=ischecked}">             <checkbox name="cb" ischecked="true" />         </local:testcontrol>     </grid> </window> 

but want declare testcontrol in separated xaml file. did doesn't work:

mainwindow.xaml

<window x:class="wpfapplication2.mainwindow"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:local="clr-namespace:wpfapplication2"     title="mainwindow" height="350" width="525">     <stackpanel>         <local:mytestcontrol />     </stackpanel> </window> 

mytestcontrol.xaml (mytestcontrol.cs not changed) :

<local:testcontrol x:class="wpfapplication2.mytestcontrol"                    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                    xmlns:local="clr-namespace:wpfapplication2"                    isnextbuttonenabled="{binding elementname=cb, path=ischecked}">     <grid>         <checkbox name="cb" ischecked="true" />     </grid> </local:testcontrol> 

while executing, in output window error message :

system.windows.data error: 4 : cannot find source binding reference 'elementname=cb'. bindingexpression:path=ischecked; dataitem=null; target element 'mytestcontrol' (name=''); target property 'isnextbuttonenabled' (type 'boolean')

i don't understant mistake. did make wrong ?

thanks in advance.

try this, bind ischecked of checkbox isnextbuttonenabled property

<contentcontrol x:class="wpfstackoverflowspielwiese.testcontrol"                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                 x:name="control">    <grid>     <checkbox name="cb"               ischecked="{binding elementname=control, path=isnextbuttonenabled}" />   </grid> </contentcontrol> 

code behind

public partial class testcontrol : contentcontrol {   public testcontrol() {     this.initializecomponent();   }    /// <summary>   /// identifies isnextbuttonenabled dependency property   /// </summary>   public static readonly dependencyproperty isnextbuttonenabledproperty = dependencyproperty.register(     "isnextbuttonenabled", typeof(bool), typeof(testcontrol), new propertymetadata(true));    static testcontrol() {     defaultstylekeyproperty.overridemetadata(typeof(testcontrol), new frameworkpropertymetadata(typeof(testcontrol)));   }    /// <summary>   /// gets or sets value indicating if next button of control enabled   /// </summary>   [bindable(true)]   public bool isnextbuttonenabled {     { return (bool)this.getvalue(isnextbuttonenabledproperty); }     set { this.setvalue(isnextbuttonenabledproperty, value); }   } } 

hope helps