read data from text,csv,xml files using C#

XML=>     
                           var  Info = XDocument.Load(completeFilePath);
   var descendants = employeeInfo.Descendants("Element");
   var list = new List<Employee>();
   foreach (var descendant in descendants)
   {
    var emp = new Employee();
    emp.EmployeeId= descendant.Element("Id").Value;
    emp.Name = descendant.Element("Name").Value;
     list.Add(emp);
                            }

Text=>
                                                      var fileInLines = File.ReadAllLines(completeFilePath);
    foreach (var line in fileInLines)
   {
    var fileAttributes = line.Split(' ');
    var emp = new Employee();

    emp.Id = fileAttributes[0];
    emp.Name = fileAttributes[1];
    list.Add(emp);
   }

CSV=>
                         StreamWriter cfile = new StreamWriter(filepath);
     using (var wc = cfile)
   {
    var sb = new StringBuilder();

    foreach (var emp in employees)
    {
     sb.Append(emp.Id + ",");
     sb.Append(emp.Name + ",");
    }
    wc.WriteLine(sb.ToString());
    }