[c#] XML Parsing - Read a Simple XML File and Retrieve Values

I've written a Task Scheduling program for learning purposes. Currently I'm saving the scheduled tasks just as plain text and then parsing it using Regex. This looks messy (code wise) and is not very coherent.

I would like to load the scheduled tasks from an XML file instead, I've searched quite a bit to find some solutions but I couldn't get it to work how I wanted.

I wrote an XML file structured like this to store my data in:

<Tasks>
    <Task>
        <Name>Shutdown</Name>
        <Location>C:/WINDOWS/system32/shutdown.exe</Location>
        <Arguments>-s -f -t 30</Arguments>
        <RunWhen>
            <Time>8:00:00 a.m.</Time>
            <Date>18/03/2011</Date>
            <Days>
                <Monday>false</Monday>
                <Tuesday>false</Tuesday>
                <Wednesday>false</Wednesday>
                <Thursday>false</Thursday>
                <Friday>false</Friday>
                <Saturday>false</Saturday>
                <Sunday>false</Sunday>
                <Everyday>true</Everyday>
                <RunOnce>false</RunOnce>
            </Days>
        </RunWhen>
        <Enabled>true</Enabled>
    </Task>
</Tasks>

The way I'd like to parse the data is like so:

1. Open Tasks.xml
2. Load the first Task tag.
3. In that task retrieve the values of the Name, Location and Arguments tags.
4. Then open the RunWhen tag and retrieve the values of the Time and Date tags.
5. After that open the Days tag and retrieve the value of each individual tag within.
6. Retrieve the value of Enabled.
7. Load the next task and repeat steps 3 -> 7 until all the Task tags in Tasks have been parsed.

I'm very sure you can do it this way I just can't work it out as there are so many different ways to do things in XML I got a bit overwhelmed. But what I've go so far is that I would most likely be using XPathDocument and XPathNodeIterator right?

If someone can show me an example or explain to me how this would be done I would be very happy.

Try XmlSerialization

try this

[Serializable]
public class Task
{
    public string Name{get; set;}
    public string Location {get; set;}
    public string Arguments {get; set;}
    public DateTime RunWhen {get; set;}
}

public void WriteXMl(Task task)
{
    XmlSerializer serializer;
    serializer = new XmlSerializer(typeof(Task));

    MemoryStream stream = new MemoryStream();

    StreamWriter writer = new StreamWriter(stream, Encoding.Unicode);
    serializer.Serialize(writer, task);

    int count = (int)stream.Length;

     byte[] arr = new byte[count];
     stream.Seek(0, SeekOrigin.Begin);

     stream.Read(arr, 0, count);

     using (BinaryWriter binWriter=new BinaryWriter(File.Open(@"C:\Temp\Task.xml", FileMode.Create)))
     {
         binWriter.Write(arr);
     }
 }

 public Task GetTask()
 {
     StreamReader stream = new StreamReader(@"C:\Temp\Task.xml", Encoding.Unicode);
     return (Task)serializer.Deserialize(stream);
 }

Are you familiar with the DataSet class?

The DataSet can also load XML documents and you may find it easier to iterate.

http://msdn.microsoft.com/en-us/library/system.data.dataset.readxml.aspx

DataSet dt = new DataSet();
dt.ReadXml(@"c:\test.xml");

I usually use XmlDocument for this. The interface is pretty straight forward:

var doc = new XmlDocument();
doc.LoadXml(xmlString);

You can access nodes similar to a dictionary:

var tasks = doc["Tasks"];

and loop over all children of a node.

class Program
{

    static void Main(string[] args)
    {

        //Load XML from local
        string sourceFileName="";
        string element=string.Empty;
        var FolderPath=@"D:\Test\RenameFileWithXmlAttribute";

            string[] files = Directory.GetFiles(FolderPath, "*.xml");
            foreach (string xmlfile in files)
            {
                try
                {
                    sourceFileName = xmlfile;
                    XElement xele = XElement.Load(sourceFileName);
                    string convertToString = xele.ToString();
                    XElement parseXML = XElement.Parse(convertToString);
                    element = parseXML.Descendants("Meta").Where(x => (string)x.Attribute("name") == "XMLTAG").Last().Value;
                    DirectoryInfo CurrentDate = Directory.CreateDirectory(DateTime.Now.ToString("yyyy-MM-dd"));
                    string saveWithThisName= Path.Combine(CurrentDate.FullName, element);
                    File.Copy(sourceFileName, saveWithThisName,true);                      
                }
                catch(Exception ex)
                {

                }      
            }       
    }
}