Not really, you have to assign a variable. So
var bar = Stuff.Elements.Foo;
bar.Name = "Bob Dylan";
bar.Age = 68;
bar.Location = "On Tour";
bar.IsCool = True;
Or in C# 3.0 and above:
var bar = new FooType
{
Name = "Bob Dylan",
Age = 68,
Location = "On Tour",
IsCool = True
};
Stuff.Elements.Foo = bar;