Question

Read sequentially through the XML files (e.g. C:\Application\XML) and get the xml for all the files.

Answer 1

You can read XML files as shown below:

List<string> files = Directory.GetFiles("c:\\MyDir", "*.xml").ToList();    

foreach(string fileLocation in files)
{
      XmlDocument obj = new XmlDocument();
      obj.Load(filelocation);

      //Your code to place the xml in a queue.
}