SyteLine IDO SOAP Web Service Client Generator

// Add a service reference to http://utilserver/IDORequestService/IDOWebService.asmx?WSDL with namespace IDOWebService.
using System;
using System.Data;
using System.ServiceModel;

class Program
{
    static void Main()
    {
        // Use BasicHttpSecurityMode.Transport when the URL is https.
        var binding = new BasicHttpBinding(BasicHttpSecurityMode.None) { MaxReceivedMessageSize = 10485760 };
        var client = new IDOWebService.DOWebServiceSoapClient(binding, new EndpointAddress("http://utilserver/IDORequestService/IDOWebService.asmx"));

        string password = Environment.GetEnvironmentVariable("SL_PASSWORD");
        string token = client.CreateSessionToken("svc_integration", password, "CSI_PROD");

        // Session token, IDO, properties, filter, order by, post-query method, record cap
        DataSet ds = client.LoadDataSet(token, "SLItems", "Item, Description, UM", "Item LIKE 'PN-%'", "Item", "", -1);

        DataTable table = ds.Tables[0];
        foreach (DataRow row in table.Rows)
        {
            foreach (DataColumn col in table.Columns)
            {
                Console.Write(col.ColumnName + "=" + row[col] + "  ");
            }
            Console.WriteLine();
        }

        // CallMethod: parameters travel as XML, in method order. ByRef='Y' marks output parameters.
        // XML-escape any value that can contain < > & or quotes.
        string parms = "<Parameters>"
            + "<Parameter ByRef='N'>PN-48213</Parameter>"
            + "<Parameter ByRef='N'>MAIN</Parameter>"
            + "<Parameter ByRef='Y'/>"
            + "<Parameter ByRef='Y'/>"
            + "</Parameters>";

        object rc = client.CallMethod(token, "UETItemChecks", "UETItemReorderCheckSp", ref parms);
        Console.WriteLine("Return value: " + rc);
        Console.WriteLine("Parameters after call: " + parms);
    }
}

# New-WebServiceProxy exists in Windows PowerShell 5.1, not in PowerShell 7.
$svc = New-WebServiceProxy -Uri 'http://utilserver/IDORequestService/IDOWebService.asmx?WSDL'
$cred = Get-Credential -UserName 'svc_integration' -Message 'SyteLine password'
$token = $svc.CreateSessionToken($cred.UserName, $cred.GetNetworkCredential().Password, 'CSI_PROD')

$ds = $svc.LoadDataSet($token, 'SLItems', 'Item, Description, UM', "Item LIKE 'PN-%'", 'Item', '', -1)
$ds.Tables[0] | Format-Table -AutoSize

$parms = "<Parameters><Parameter ByRef='N'>PN-48213</Parameter><Parameter ByRef='N'>MAIN</Parameter><Parameter ByRef='Y'/><Parameter ByRef='Y'/></Parameters>"
$ref = [ref]$parms
$rc = $svc.CallMethod($token, 'UETItemChecks', 'UETItemReorderCheckSp', $ref)
"Return value: $rc"
"Parameters after call: " + $ref.Value