A reporting service using SOAP calls passing XML to a Data Extension

using System;
using Microsoft.ReportingServices.DataProcessing;
using System.Collections;
using System.Globalization;
using System.Diagnostics;

namespace CustomDataExtension
{
   /*
   * Because IDataParameterCollection is primarily an IList,
   * the sample can use an existing class for most of the implementation.
   * In this sample, we use ArrayList. 
   */
   public class DataSetParameterCollection : ArrayList, IDataParameterCollection, IDisposable
   {
		public object this[string index] 
		{
			get
		{
			return this[IndexOf(index)];
		}
			set
			{
				this[IndexOf(index)] = value;
			}
		}
		/// <summary>
		/// Helper wrapper to get a parameter by name
		/// </summary>
		/// <param name="parameterName"></param>
		/// <returns></returns>
		public DataSetParameter GetByName(string parameterName)
		{
			DataSetParameter parameter = null;
			IEnumerator enumerator = this.GetEnumerator();
			while (enumerator.MoveNext())
			{
				DataSetParameter tempParameter = (DataSetParameter) enumerator.Current;
				if (tempParameter.ParameterName == parameterName) 
				{
					parameter = tempParameter;
					break;
				}
			}
			return parameter;
		}

		public int Add(IDataParameter value)
		{
			Trace.WriteLine("DataSet Extension: Add(IDataParameter value");
			if (((DataSetParameter)value).ParameterName != null)
			{
				return base.Add(value);
			}
			else
				throw new ArgumentException("parameter must be named");
		}

 
	   public override int Add(object value)
	   {
		   Trace.WriteLine("Add value" + value.ToString());
		   return Add((IDataParameter)value);
	   }

	   /// <summary>
	   /// Dispose of any held resources
	   /// </summary>
		public void Dispose() 
		{
			DataSetParameter parameter = null;
			IEnumerator enumerator = this.GetEnumerator();
			while (enumerator.MoveNext())
			{
				parameter = (DataSetParameter) enumerator.Current;
				parameter.Dispose();
			}
		}
   }
}