adding menuitem to menu through xml file

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ASP.NET

i am trying to bind the data to menu through xml file
My xml file:

<?xml version="1.0" standalone="true"?>
-<DocumentElement> <Menu Allowed="0" Tooltip="Administration" PreFix="" NavigateUrl="" ParentID="" Description="Administration" ID="01"/> <Menu Allowed="1" Tooltip="Sales And Marketing" PreFix="" NavigateUrl="" ParentID="" Description="Sales And Marketing" ID="02"/> <Menu Allowed="1" Tooltip="" PreFix="" NavigateUrl="" ParentID="02" Description="Sale Order" ID="03"/> <Menu Allowed="1" Tooltip="" PreFix="" NavigateUrl="" ParentID="02" Description="Sale Invoice" ID="04"/> <Menu Allowed="1" Tooltip="Purchase" PreFix="" NavigateUrl="" ParentID="" Description="Purchase" ID="05"/> <Menu Allowed="1" Tooltip="" PreFix="" NavigateUrl="" ParentID="05" Description="Purchase Order" ID="06"/> <Menu Allowed="1" Tooltip="" PreFix="" NavigateUrl="" ParentID="05" Description="Purchase Order" ID="07"/> <Menu Allowed="1" Tooltip="" PreFix="" NavigateUrl="" ParentID="05" Description="Transfer Order" ID="08"/> </DocumentElement

i want add menu item in menu according to parentId property..
i.e whose parentId is null that become my parent menu item in this way
give suggession