Settings.cs

using System;
using System.Globalization;
using System.IO;
using System.Xml;

namespace Weland {
    // from http://www.codeproject.com/KB/XML/quickndirtyxml.aspx
    public class Settings {
	XmlDocument xmlDocument = new XmlDocument();
	string applicationData;
	string documentPath;

        private CultureInfo ic = CultureInfo.InvariantCulture;
	
	public Settings() {
	    applicationData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "//Weland";
	    documentPath = applicationData + "//settings.xml";

	    try {
		xmlDocument.Load(documentPath);
	    }
	    catch {xmlDocument.LoadXml("<settings></settings>");}
	}
	
	public int GetSetting(string xPath, int defaultValue) { 
	    return Convert.ToInt32(GetSetting(xPath, Convert.ToString(defaultValue, ic)), ic); 
	}
	
	public void PutSetting(string xPath, int value) { 
	    PutSetting(xPath, Convert.ToString(value, ic)); 
	}

	public bool GetSetting(string xPath, bool defaultValue) {
	    return Convert.ToBoolean(GetSetting(xPath, Convert.ToString(defaultValue, ic)), ic);
	}

	public double GetSetting(string xPath, double defaultValue) {
	    return Convert.ToDouble(GetSetting(xPath, Convert.ToString(defaultValue, ic)), ic);
	}

	public void PutSetting(string xPath, double value) {
	    PutSetting(xPath, Convert.ToString(value, ic));
	}

	public void PutSetting(string xPath, bool value) {
	    PutSetting(xPath, Convert.ToString(value, ic));
	}

	public string GetSetting(string xPath,  string defaultValue) { 
	    XmlNode xmlNode = xmlDocument.SelectSingleNode("settings/" + xPath );
	    if (xmlNode != null) {
		return xmlNode.InnerText;
	    } else { 
		return defaultValue;
	    }
	}

	public void PutSetting(string xPath,  string value) { 
	    XmlNode xmlNode = xmlDocument.SelectSingleNode("settings/" + xPath);
	    if (xmlNode == null) { 
		xmlNode = createMissingNode("settings/" + xPath); 
	    }
	    xmlNode.InnerText = value;
	    try {
		if (!Directory.Exists(applicationData)) {
		    Directory.CreateDirectory(applicationData);
		}
		xmlDocument.Save(documentPath);
	    } catch (Exception) {
	    }
	}
      
	private XmlNode createMissingNode(string xPath) { 
	    string[] xPathSections = xPath.Split(new char[] {'/'});
	    string currentXPath = "";
	    XmlNode testNode = null;
	    XmlNode currentNode = xmlDocument.SelectSingleNode("settings");
	    foreach (string xPathSection in xPathSections) { 
		currentXPath += xPathSection;
		testNode = xmlDocument.SelectSingleNode(currentXPath);
		if (testNode == null) {
		    currentNode.InnerXml += "<" + 
			xPathSection + "></" + 
			xPathSection + ">";
		}
		currentNode = xmlDocument.SelectSingleNode(currentXPath);
		currentXPath += "/";
	    }
	    return currentNode;
	}
    }
}