WCF: Image Store in sql database from andorid client

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ASP.NET

WCF

I have created one WCF application and it has one service to save image in database. I have used image data type column in Data table. My WCF method is as follows:

public string InsertImage(byte[] byteStream)
{
   string bb = System.Text.Encoding.ASCII.GetString(byteStream);
   byte[] encodedDataAsBytes= System.Convert.FromBase64String(bb);

   bool result = SiteImageDao.InsertImage(encodedDataAsBytes);
   var xResult = new XElement("Result", result);

   return xResult.ToString();


}

Can anyone tell me weather I am doing this correctly.

Thanks.