Can I read XML or load XML from specifc path to my application using xmlload in vsto solution

 var path = HttpContext.Current.Server.MapPath("~/TheXMLFile.xml");
            
here it is giving error 'HttpContext' does not exist in the current ExcelAddIn1


even i have try using this 
 xml.LoadXml(@"~\App_Data\Product.xml");//Here given xml path location

this is also giving error about path 
error message is as 
Data at the root level is invalid. Line 1, position 1.

What I have tried:

<pre> private void btnGetExcl_Click(object sender, EventArgs e)
        {


            List<string> name = null;
            XmlDocument xml = new XmlDocument();
            //string path = @"~\App_Data\Product.xml.xml";
           // xml.LoadXml(@"~\App_Data\Product.xml");//Here given xml path location

            var path = HttpContext.Current.Server.MapPath("~/TheXMLFile.xml");
            var XmlData = XDocument.Load(path);


           // XmlNodeList xnList = xml.SelectNodes("/Trainings/Training");
           // foreach (XmlNode xn in xnList)
           // {
           //     new List<string>{
           //     xn["name"].InnerText
           //     };

           // }

              
            }