类数组的XmlSerialization

我有一个定义如下的类(使用xsd生成):

[GeneratedCodeAttribute("xsd", "4.0.30319.1")]
[SerializableAttribute]
[DebuggerStepThroughAttribute]
[DesignerCategoryAttribute("code")]
[XmlTypeAttribute(AnonymousType = true)]
[XmlRootAttribute(IsNullable = false)]
public class DataRequest
{
    private string _serviceField;
    private string _subscriptionField;
    public string Service
    {
        get
        {
            return _serviceField;
        }
        set
        {
            _serviceField = value;
        }
    }
    [XmlElement("Subscription"), DefaultValue(null)]
    public string Subscription
    {
        get
        {
            return _subscriptionField;
        }
        set
        {
            _subscriptionField = value;
        }
    }
}

然后，定义上述类的数组:

DataRequest[] requests = new DataRequest[2];
requests[0] = new DataRequest();
requests[1] = new DataRequest();
...

我想序列化这个数组，并以下面的结果结束:

  <SOAP-ENV:Body>
    <DataRequest>
      <Service>ServiceA</DataService>
      <Subscription />
    </DataRequest>
    <DataRequest>
      <Service>ServiceB</DataService>
      <Subscription />
    </DataRequest>
  </SOAP-ENV:Body>

然而，当我调用下面的，其中输入是数组:

XmlSerializer serializer = new XmlSerializer(typeof(input));
serializer.Serialize(writer, input);

得到如下结果:

  <Soap-ENV:Body>
    <ArrayOfDataRequest>
      <DataRequest>
        <Service>ServiceA</DataService>
        <Subscription />
      </DataRequest>
      <DataRequest>
        <Service>ServiceB</DataService>
        <Subscription />
      </DataRequest>
    </ArrayOfDataRequest>
  </Soap-ENV:Body>

是否有一些方法我可以摆脱ArrayOfDataRequest元素，只是有实际的数组元素直接序列化?