Picklist
plist_addr = new Picklist();
plist_addr.name = ddlAddressType.SelectedItem.Text.ToString();
plist_addr.Value =
int.Parse(ddlAddressType.SelectedValue.ToString());
PicklistProperty addr_code = new PicklistProperty();
addr_code.Name =
"address1_addresstypecode";
addr_code.Value = plist_addr;