Flex: Add a new row to the top of the ordered DataGrid

<? XML version = "1.0" encoding = "UTF-8"?>
<! -- Http://yecon.blog.hexun.com/29905010_d.html -->
<! -- Http://www.slsay.com -->
<Mx: Application xmlns: MX = "http://www.adobe.com/2006/mxml"
Layout = "vertical"
Verticalalign = "Middle"
Backgroundcolor = "white"
Creationcomplete = "Init ();">
<Mx: SCRIPT>
<! [CDATA [
Import MX. Collections. arraycollection;
Import flash. utils. bytearray;
Public var objs: arraycollection = new arraycollection ();
Private function Init (): void
{
VaR OBJ: Object = new object ();
OBJ. Name = "Aslan ";
Objs. additem (OBJ );
OBJ = new object ();
OBJ. Name = "Shek ";
Objs. additem (OBJ );
OBJ = new object ();
OBJ. Name = "yecon ";
Objs. additem (OBJ );
OBJ = new object ();
OBJ. Name = "slsay ";
Objs. additem (OBJ );
OBJ = new object ();
OBJ. Name = "welcome ";
Objs. additem (OBJ );
OBJ = new object ();
OBJ. Name = "Haha ";
Objs. additem (OBJ );
DG. dataprovider = objs;
}
Private function clone (source: Object ):*
{
VaR myba: bytearray = new bytearray ();
Myba. writeobject (source );
Myba. Position = 0;
Return (myba. readobject ());
}
Private function addobj (): void
{
VaR temp: array = clone (objs. toarray ());
Objs = new arraycollection (temp );
DG. dataprovider = objs;
VaR OBJ: Object = new object ();
OBJ. Name = "";
Objs. additemat (OBJ, 0 );
}
]>
</MX: SCRIPT>
<Mx: button width = "150" label = "Add new row" Click = "addobj ();"/>
<Mx: DataGrid id = "DG" editable = "true" width = "50%" Height = "80%">
<Mx: columns>
<Mx: datagridcolumn headertext = "name" datafield = "name" editable = "true"/>
</MX: columns>
</MX: DataGrid>
</MX: Application>