serializing lists classes xml

i have collection classes i wish serialize out an xml file. looks something this:

public category foo
{
  open list<bar> barlist { get; set; }
}

where bar only coupling collection properties, this:

public category bar
{
  open twine property1 { get; set; }
  open twine property2 { get; set; }
}

i wish symbol adult outputs an xml record - used both persistence, also news settings around an xslt good human-readable form.

i wish good xml illustration this:

<?xml version="1.0" encoding="utf-8"?>
<foo>
  <barlist>
    <bar>
      <property1>value</property1>
      <property2>value</property2>   
    </bar>
    <bar>
      <property1>value</property1>
      <property2>value</property2>   
    </bar>
  </barlist>
</foo>

where bars barlist combined out properties. i'm sincerely certain i'll need markup category construction work, nonetheless i can't seem right combination.

i've noted foo charge

[xmlroot("foo")]  

and list<bar> attribute

[xmlarray("barlist"), xmlarrayitem(typeof(bar), elementname="bar")]

in an try tell serializer i wish happen. doesn't seem work however i only an lifeless tag, looking this:

<?xml version="1.0" encoding="utf-8"?>
<foo> 
  <barlist />
</foo>

i'm certain fact i'm controlling involuntary properties should have any effect, generics requires any special treatment. i've gotten work easier forms list strings, nonetheless list classes distant eludes me.