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

using System;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
using System.Xml;
using System.Data;

namespace RSTestWS
{
	/// <summary>
	/// Summary description for BusinessData.
	/// </summary>
	public class BusinessData : System.Web.Services.WebService
	{
		public BusinessData()
		{
			//CODEGEN: This call is required by the ASP.NET Web Services Designer
			InitializeComponent();
		}

		#region Component Designer generated code
		
		//Required by the Web Services Designer 
		private IContainer components = null;
				
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if(disposing && components != null)
			{
				components.Dispose();
			}
			base.Dispose(disposing);		
		}
		
		#endregion

		// WEB SERVICE EXAMPLE
		// The HelloWorld() example service returns the string Hello World
		// To build, uncomment the following lines then save and build the project
		// To test this web service, press F5

		[WebMethod]
		public DataSet GetReportDataSet(string sXml)
		{
			// parse xml
			// call business component based on method defined in xml
			DataSet ds = null;
			try
			{
				string sWebMethod = string.Empty;

				XmlDocument doc = new XmlDocument();
				doc.LoadXml(sXml);

				sWebMethod = doc.SelectSingleNode("//WebMethod").InnerText;

				BusinessDataAccess DataAccess = new BusinessDataAccess();

				switch (sWebMethod)
				{
					case "GetCustomers":
						ds = DataAccess.GetCustomers(sXml);
						break;

					case "GetTerritorySales":
						ds = DataAccess.GetTerritorySales(sXml);
						break;

					case "GetSalesOrder":
						ds = DataAccess.GetSalesOrder(sXml);
						break;

					case "GetSalesOrderDetail":
						ds = DataAccess.GetSalesOrderDetail(sXml);
						break;
				}
			}
			catch
			{
			}
			return ds;
		}
	}
}