internal static void SetVhd(this ManagementScope scope, string vmIdentity, string vhdFilepath)
{
var virtualMachine = scope.GetVirtualMachine(vmIdentity);
var virtualSystemSettingData = virtualMachine.GetVirtualSystemSettingData();
var diskDriveResource = scope.GetDiscDriveResource(virtualSystemSettingData);
var allocationSettingData = scope.GetAllocationSettingDataForVirtualHardDisks();
allocationSettingData["Parent"] = diskDriveResource;
allocationSettingData["HostResource"] = new string[] { vhdFilepath };
scope.AddResourceSettings(virtualSystemSettingData, allocationSettingData);
}