Below is your code

        if (!(X == null))
        {
            try
           {
               XmlNodeList ArticleList = X.SelectNodes("InfoStreamResults/Article");
               foreach(XmlNode Article in ArticleList)
               {
                  
                   try
                   {
                       XmlNodeList CatNodesList = Article.SelectNodes("Categories/Category");
                       foreach( XmlNode category in CatNodesList)
                       {
                        
                           if (category != null)
                           {
                              string categoryName = category.InnerText;
                               Response.Write(categoryName);
                               Response.Write("<br />");
                           }
  
                       }
  
     }
                   catch (Exception ex)
                   {
                       Response.Write(ex);
                       Response.Write("<br />");
  
                   }
    
  
               }
           }
           catch (Exception ex)
           {
               Response.Write(ex);
           }
       }

HC

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