koobas.hobune.stream
Problems writing to existing xml
Hi! i followed some tutorials regarding XML files and im having my issues writing to an existing xml, my xml is something like this (real one have more items)
<?xml version="1.0" encoding="utf-8"?>
<levels>
<name>Level 1-1</name>
<title>This is level 1</title>
</level>
<name>Level 1-2</name>
<title>This is level 2</title>
</level>
</levels>
I've a script to load this xml and put it's data to some variables so i can use ingame, this is the script:
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.IO;
public class LoadXmlData : MonoBehaviour // the Class
{
public int actualLevel = 1;
static int LevelMaxNumber;
static int WaipointCounter = 0;
public static string lvlname = "";
public static string lvltitle = "";
public TextAsset XMLData;
List<Dictionary<string,string>> levels = new List<Dictionary<string,string>>();
Dictionary<string,string> obj;
void Start()
{ //Timeline of the Level creator
GetLevel();
StartCoroutine(LevelLoadInfo(0.0F));
LevelMaxNumber = levels.Count;
}
public void GetLevel()
{
XmlDocument xmlDoc = new XmlDocument(); // xmlDoc is the new xml document.
xmlDoc.LoadXml(XMLData.text); // load the file.
XmlNodeList levelsList = xmlDoc.GetElementsByTagName("level"); // array of the level nodes.
foreach (XmlNode levelInfo in levelsList)
{
XmlNodeList levelcontent = levelInfo.ChildNodes;
obj = new Dictionary<string,string>(); // Create a object(Dictionary) to colect the both nodes inside the level node and then put into levels[] array.
foreach (XmlNode levelsItens in levelcontent) // levels itens nodes.
{
if(levelsItens.Name == "name")
{
obj.Add("name",levelsItens.InnerText); // put this in the dictionary.
}
if(levelsItens.Name == "title")
{
obj.Add("title",levelsItens.InnerText); // put this in the dictionary.
}
}
levels.Add(obj); // add whole obj dictionary in the levels[].
}
}
IEnumerator LevelLoadInfo(float Wait)
{
levels[actualLevel-1].TryGetValue("name",out lvlname);
levels[actualLevel-1].TryGetValue("title",out lvltitle);
yield return new WaitForSeconds(Wait);
}
void Update()
{
}
}
ok, everything works fine, but i would like to know how i could change some data and put it back to the xml file and save it, for example, how to change the level 2 title, i tried a lot of different things but none work at all, can i access the node directly?, do i have to loop every node and find the one a need like in the load script? how is the way to do it? thanks in advance!
First, add some tag in your xml in question. Second, if you want to rewrite data in a XML file, the simplest way, it to create a text line, and then to save it in the file or somewhere else. I will write function of saving of your data:
public void myReSave() {
//create string as xml
string tempStr = "";
//Fill variable
tempStr = tempStr + "<levels>";
//Your all data level in dictionaries, change title of level 2 and save all dictionaries
(levels[1])["title"] = "MegaTitle Level 2"; //change title
for(int i = 0; i < levels.Count; i++) {
//Create one level data
tempStr = tempStr + "<level>";
tempStr = tempStr + "<name>" + (levels[i])["name"] + "</name>";
tempStr = tempStr + "<title>" + (levels[i])["title"] + "</title>";
tempStr = tempStr + "</level>";
}
tempStr = tempStr + "</levels>";
//And save your string into your file.
//Simple way, but remember, that filepath shall exist already, differently there will be an error
System.IO.File.WriteAllText("C:\yourfilepath\yourtextfile.xml", tempStr);
}
I hope that it will help you.
thanks for the reply zharik, but my xml is bigger than the example i posted here, and i want to know how to overwrite information using the xmlDocument procedure like in my Load function
@$$anonymous$$ad_Fox Are you want to get access to part of the file and to rewrite it?
@zharik86, i trya to load level info from the xml, put into variables and use ingame, that part works perfect, then, those variables are updated ingame, i try to put back those modified variables into their respective nodes in the xml document and then save the file. I dont know how to do that.
@$$anonymous$$ad_Fox Write your comments as comment, not answer(button "Add comment" below answer). For your case see this links: unitygems.com/xml and unitynoobs.blogspot.nl/2011/04/xml-writing-to-existing-xml-file.html?m=1.
