Delete email item from exchange server 2010 with activesync

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C#

HI,
we are developing synchronise exchange server with activesync in C# that`s working well we can able to retrive inbox mails. Now our client expecting to delete email from exchange server from my website. But i dont have good sample in microsoft site just they give the request and response XML only. we are expecting sample code to delete mail item from exchange server. Below is the request and respose XML sample from microsoft site

<?xml version="1.0" encoding="utf-8"?>
<Sync xmlns="AirSync:">
  <Collections>
    <Collection>
      <SyncKey>1174511196</SyncKey>
      <CollectionId>5</CollectionId>
      <DeletesAsMoves>1</DeletesAsMoves>
      <GetChanges>1</GetChanges>
      <WindowSize>512</WindowSize>
      <Commands>
        <Delete>
          <ServerId>5:10</ServerId>
        </Delete>
      </Commands>
    </Collection>
  </Collections>
</Sync>

Response:

<?xml version="1.0" encoding="utf-8"?>
<Sync xmlns="AirSync:">
  <Collections>
    <Collection>
      <SyncKey>721953595</SyncKey>
      <CollectionId>5</CollectionId>
      <Status>1</Status>
    </Collection>
  </Collections>
</Sync>

please help.
thanks,
Suresh