WPF textblock events inside contentcontrol of a button not getting called -

i have simple button 2 textblock elements within contentcontrol tag of button under. problem textblock control's mouseup event not getting called. instead onclick even1t of button getting called every time click on textblock controls.

<button> <contentcontrol> <textblock x:name="txt1" text="tes1-1" mouseleftbuttonup="txt1_mouseleftbuttonup"/>  <textblock x:name="txt2" text="tes1-1" mouseleftbuttonup="txt2_mouseleftbuttonup"/>  <contentcontrol>  </button> 

if place contentcontrol tag outside <button> tag, events work however.

it not way can start mouseleftbuttonup event handler textblocks, way how can handle mouseleftbuttonup event on textblocks:

<button mouse.previewmouseup="button_mouseleftbuttonup">     <contentcontrol>         <textblock text="testtext" x:name="txt1"/>     </contentcontrol> </button>  private void button_mouseleftbuttonup(object sender, mousebuttoneventargs e) {     var btn = sender button; if (btn == null) return;      if (btn.inputhittest(e.getposition(btn)) textblock)     {         ;//textblock mouseup handler     } }