System.Xml.Xsl.XsltArgumentList.AddParam C# (CSharp) Method

        public void AddParam(string name, string namespaceUri, object parameter)
        {
            CheckArgumentNull(name, nameof(name));
            CheckArgumentNull(namespaceUri, nameof(namespaceUri));
            CheckArgumentNull(parameter, nameof(parameter));

            XmlQualifiedName qname = new XmlQualifiedName(name, namespaceUri);
            qname.Verify();
            _parameters.Add(qname, parameter);
        }

        private void DrawProfilesModule()
        {
            XsltArgumentList args = new XsltArgumentList();
            XslCompiledTransform xslt = new XslCompiledTransform();
            SessionManagement sm = new SessionManagement();

            Utilities.DataIO data = new Profiles.Profile.Utilities.DataIO();
            string email = string.Empty;
            string imageemailurl = string.Empty;
            if (this.BaseData.SelectSingleNode("rdf:RDF[1]/rdf:Description[1]/prns:emailEncrypted", this.Namespaces) != null &&
                this.BaseData.SelectSingleNode("rdf:RDF[1]/rdf:Description[1]/vivo:email", this.Namespaces) == null)
            {
                email = this.BaseData.SelectSingleNode("rdf:RDF[1]/rdf:Description[1]/prns:emailEncrypted", this.Namespaces).InnerText;
                imageemailurl = string.Format(Root.Domain + "/profile/modules/CustomViewPersonGeneralInfo/" + "EmailHandler.ashx?msg={0}", HttpUtility.UrlEncode(email));
            }

            args.AddParam("root", "", Root.Domain);
            if (email != string.Empty)
            {
                args.AddParam("email", "", imageemailurl);
            }
            args.AddParam("imgguid", "", Guid.NewGuid().ToString());

            litPersonalInfo.Text = XslHelper.TransformInMemory(Server.MapPath("~/Profile/Modules/CustomViewPersonGeneralInfo/CustomViewPersonGeneralInfo.xslt"), args, base.BaseData.OuterXml);

            if (base.BaseData.SelectSingleNode("rdf:RDF/rdf:Description[1]/prns:mainImage/@rdf:resource", base.Namespaces) != null)
            {
                string imageurl = base.BaseData.SelectSingleNode("//rdf:RDF/rdf:Description[1]/prns:mainImage/@rdf:resource", base.Namespaces).Value;
                imgPhoto.ImageUrl = imageurl + "&cachekey=" + Guid.NewGuid().ToString();
            }
            else
            {
                imgPhoto.Visible = false;
            }
        }