c# - Using EventTrigger to call a specific key -

i have eventtrigger calls keydown event, , uses trigger call viewmodel command using eventtocommand. best way specify key used in keydown event (apart passing keyeventargs through commandparameter using passeventargstocommand)?

example:

<i:interaction.triggers>     <i:eventtrigger eventname="keydown">         <command:eventtocommand command="{binding path=testcommand}"                                 commandparameter="{binding elementname=templistview,                                                            path=selecteditem}" />      </i:eventtrigger> </i:interaction.triggers> 

any on appreciated.

you can bind 1 element using command parameter, if need key event data use

<i:interaction.triggers>     <i:eventtrigger eventname="keydown">         <command:eventtocommand command="{binding path=testcommand}"  passeventargstocommand="true"/>      </i:eventtrigger> </i:interaction.triggers>  public relaycommand<keyeventargs> command { get; private set; } 

or if using listbox example , want item, should it:

 <i:interaction.triggers>         <i:eventtrigger eventname="keydown">               <command:eventtocommand command="{binding path=testcommand}"  commandparameter="{binding}"/>          </i:eventtrigger>     </i:interaction.triggers> 

if need key and item, that's bit more trickier, on binded collection can maybe combine use of described trigger binded selecteditem, when command if fired can check selected item on viewmodel.