mvvm - Problem Binding Commands to TreeViewItem using MVVMLight -

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i'm trying use mvvmlight bind treeviewitem selected event command.

the treeviewitem's defined in hierarchicaldatatemplate cannot add interaction.triggers (as shown below)

<hierarchicaldatatemplate              x:key="treeviewitemtemplate"             itemssource="{binding childreportviewmodels}">             <i:interaction.triggers>                 <i:eventtrigger eventname="selected">                     <mvvmlight_command:eventtocommand command="{binding loadreportcommand, mode=oneway}" />                 </i:eventtrigger>             </i:interaction.triggers> </hierarchicaldatatemplate>

how else can add eventtrigger each treeviewitem?

thanks.

i forgot question.

for future ref, here's solution used...

instead of trying bind eventtocommand selected event of treeview, bound mouseleftbuttonupevent of textblock declared in hierarchicaldatatemplate treeviewitems.

<hierarchicaldatatemplate     x:key="treeviewitemtemplate"    itemssource="{binding childreportviewmodels}"    itemcontainerstyle="{staticresource treeviewitemcontainerstyle}">    <stackpanel orientation="horizontal">               <textblock text="{binding name}">          <i:interaction.triggers>             <i:eventtrigger eventname="mouseleftbuttonup">                <gs_cmd:eventtocommand command="{binding loadpublicationcommand, mode=oneway}" commandparameter="{binding}" />             </i:eventtrigger>          </i:interaction.triggers>       </textblock>    </stackpanel> </hierarchicaldatatemplate>

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