Preparing listview with expander controls

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WPF

Hi,

I have a collection something like below:

collection
{
  groupItem
  stepItem
  stepItem
  stepItem
  groupItem
  stepItem
  groupItem
  stepItem
  stepItem
  stepItem
  stepItem
  groupItem
  stepItem
  stepItem
  stepItem
},

I want to Bind the above collection to list-view, and need to present something like fallowing:

ListBox
{
   expander(GroupItem)
   {
      textbox(StepItem)
      textbox(StepItem)
      textbox(StepItem)
   }

   expander(GroupItem)
   {
      textbox(StepItem)
      textbox(StepItem)
      textbox(StepItem)
   }

   expander(GroupItem)
   {
      textbox(StepItem)
      textbox(StepItem)
      textbox(StepItem)
   }
}.

is it possible?. if possible somebody please help me.

Thanks & Regards
Easwar.