Replacing / Deleting Lines In File

[pilipino93]

Hey, I'm trying to make a program where you have the file, which is a config.xml.

I'm basically going to have the user type in numbers into a textbox, and when they hit a button, it will search for the first few characters in the file, delete the whole line, and replace it with text that I have plus the user input.

I have found a bunch of codes on replacing specified text and strings in a file, but I can't find anything that can find just the first few letters / characters, delete the whole line, and then help me carry on.

If you have any helpful codes, I'd be very appreciative thanks.

[kvprajapati]

If that file is XML document then use XML parsers.

[pilipino93]

If that file is XML document then use XML parsers.

Well I used some codes regarding txt files only but they worked just fine for this xml. And for the parsers, I still wouldn't know what to do lol. I'd have to see some examples first

[pilipino93]

bump. sorry I was trying to read some articles on xml parsers but I'm still having a hard time. Any help?

[kvprajapati]

What did you expect it to do? Do you get any errors? Please post program code and xml file content you are working on.

[pilipino93]

Sorry was workign on something, but this is the content of my xml.

I've been trying a lot of different things, I'm a bit closer, this is what I got so far, button 2 is what I'm currently working on at the moment.

Also, as you see, the <IP>0.0.0.0</IP> I'm trying to replace the innards with userinput ip from a textbox. I would get this a bit easier if the ip was always the same, but in different server clients, the <IP>" "</IP> is always different so I'm trying to replace the entire line with a new one.

<?xml version="1.0"?>
<XML>
	<SERVER>
		<IP>0.0.0.0</IP>
		<PORT>6000</PORT>
	</SERVER>

	<SKIN>Default</SKIN>

	<VIDEO>
		<WIDTH>1024</WIDTH>
		<HEIGHT>768</HEIGHT>
		<COLORBITS>32</COLORBITS>
		<GAMMA>255</GAMMA>
		<FULLSCREEN>TRUE</FULLSCREEN>
		<REFLECTION>true</REFLECTION>
		<LIGHTMAP>true</LIGHTMAP>
		<DYNAMICLIGHT>true</DYNAMICLIGHT>
		<SHADER>true</SHADER>
		<CHARACTORTEXTURELEVEL>0</CHARACTORTEXTURELEVEL>
		<MAPTEXTURELEVEL>0</MAPTEXTURELEVEL>
		<EFFECTLEVEL>0</EFFECTLEVEL>
		<TEXTUREFORMAT>1</TEXTUREFORMAT>
		<NHARDWARETNL>false</NHARDWARETNL>
	</VIDEO>

	<AUDIO>
		<BGM_MUTE>true</BGM_MUTE>
		<BGM_VOLUME>0.607800</BGM_VOLUME>
		<EFFECT_MUTE>false</EFFECT_MUTE>
		<EFFECT_VOLUME>0.986200</EFFECT_VOLUME>
		<SOUND_3D>1</SOUND_3D>
		<A8BITSOUND>false</A8BITSOUND>
		<INVERSESOUND>false</INVERSESOUND>
		<HWMIXING>false</HWMIXING>
		<HITSOUND>false</HITSOUND>
		<NARRATIONSOUND>false</NARRATIONSOUND>
	</AUDIO>

	<MOUSE>
		<SENSITIVITY>0.399800</SENSITIVITY>
		<INVERT>FALSE</INVERT>
	</MOUSE>

	<JOYSTICK>
		<SENSITIVITY>1.000000</SENSITIVITY>
		<INVERT>FALSE</INVERT>
	</JOYSTICK>

	<KEYBOARD>
		<FORWARD alt="-1">17</FORWARD>
		<BACK alt="-1">31</BACK>
		<LEFT alt="-1">30</LEFT>
		<RIGHT alt="-1">32</RIGHT>
		<MELEEWEAPON alt="-1">18</MELEEWEAPON>
		<PRIMARYWEAPON alt="-1">16</PRIMARYWEAPON>
		<SECONDARYWEAPON alt="-1">33</SECONDARYWEAPON>
		<ITEM1 alt="-1">5</ITEM1>
		<ITEM2 alt="-1">6</ITEM2>
		<PREVOUSWEAPON alt="-1">256</PREVOUSWEAPON>
		<NEXTWEAPON alt="-1">257</NEXTWEAPON>
		<RELOAD alt="-1">19</RELOAD>
		<JUMP alt="-1">57</JUMP>
		<SCORE alt="-1">15</SCORE>
		<MENU alt="-1">-1</MENU>
		<TAUNT alt="-1">41</TAUNT>
		<BOW alt="-1">7</BOW>
		<WAVE alt="-1">8</WAVE>
		<LAUGH alt="-1">9</LAUGH>
		<CRY alt="-1">10</CRY>
		<DANCE alt="-1">11</DANCE>
		<SCREENSHOT alt="-1">88</SCREENSHOT>
		<RECORD alt="-1">87</RECORD>
		<DEFENCE alt="-1">42</DEFENCE>
		<TOGGLECHAT alt="-1">47</TOGGLECHAT>
		<USEWEAPON alt="-1">258</USEWEAPON>
		<USEWEAPON2 alt="-1">259</USEWEAPON2>
	</KEYBOARD>

	<MACRO>
		<F1>^1Enemy spotted!</F1>
		<F2>^2Medding/^3Reloading</F2>
		<F3>^46Require ^5assistance, ^2come quickly</F3>
		<F4>^1S, ^9B, ^1IG, or ^9IS</F4>
		<F5>^4Hello!</F5>
		<F6>Let's have a good time and play fair.</F6>
		<F7>/laugh</F7>
		<F8>/taunt</F8>
		
	</MACRO>

	<ETC>
		<NETWORKPORT1>7700</NETWORKPORT1>
		<NETWORKPORT2>7800</NETWORKPORT2>
		<BOOST>FALSE</BOOST>
		<REJECT_NORMALCHAT>FALSE</REJECT_NORMALCHAT>
		<REJECT_TEAMCHAT>FALSE</REJECT_TEAMCHAT>
		<REJECT_CLANCHAT>FALSE</REJECT_CLANCHAT>
		<REJECT_WHISPER>FALSE</REJECT_WHISPER>
		<REJECT_INVITE>FALSE</REJECT_INVITE>
		<CROSSHAIR>2</CROSSHAIR>
	</ETC>

	
</XML>

private void button2_Click(object sender, EventArgs e)
        {
            string intext = "<IP>"; //<IP>0.0.0.0</IP>
            string/*[]*/newtxt = "<IP>" + textBox1.Text + "." + textBox2.Text + "." + textBox3.Text + "." + textBox4.Text + "</IP>";
            string config = Desktop + @"\config.xml";



            StreamReader sr = new StreamReader(config);
            string content = sr.ReadToEnd();
            //content = intext.Replace(Environment.NewLine, "");
            content = Regex.Replace(content, intext, newtxt);
            sr.Close();
            /*
            using (StreamWriter sw = new StreamWriter(config))
            {
                foreach (string line in newtxt)
                {
                    if (line.Contains("<IP>") == true)
                    {
                        sw.WriteLine(line);
                    }
                }
            }
            */
            StreamWriter sw = new StreamWriter(config);
            sw.Write(content, Environment.NewLine);
            sw.Close();


            List<string> linelist = File.ReadAllLines(config).ToList();
            linelist = linelist.Where(x => x.IndexOf("<IP>") <= 0).ToList();
            File.WriteAllLines(config, linelist.ToArray());
            
        }
    }
}

[kvprajapati]

Why not XML-Linq or XML Dom?

XML-LINQ - to get/set node value

using System.Xml;
using System.Xml.Linq;
....
...
void test() {
           string config =   @"config.xml";
           XDocument doc = XDocument.Load(config);
           foreach (var t in doc.Descendants("IP"))
           {
               t.Value = "10.10.10.10";
           }
           doc.Save(config);
}

[pilipino93]

Never really knew about those. I'm still a beginner, and thanks for your help, I will try right now !

[pilipino93]

I used your code, and well, I used my original string newtxt, because it's supposed to be from userinput, and when I loaded it, I got this

<IP>&lt;IP&gt;6.20.542.8&lt;/IP&gt;</IP>

That ip was just random one I put into the boxes

[kvprajapati]

...
using System.Xml;
using System.Xml.Linq;
....
...
void test() {
           string config =   @"config.xml";
           XDocument doc = XDocument.Load(config);
           foreach (var t in doc.Descendants("IP"))
           {
              string newtxt =textBox1.Text + "." + textBox2.Text + "." + textBox3.Text + "." + textBox4.Text;

               t.Value = newtxt;
           }
           doc.Save(config);
}

[pilipino93]

Yes, that's what I did and I got that =[

oh nvm, I see, no <IP>'s in the string, let me try again ahah thx

edit : Awesome, it worked nicely. But one thing, in the xml, all the spaces are taken out, I mean like the spaces between the lines, the line breaks are gone xD

[iconoclazt]

public void RenameFileOrDirectory(string sourceFileName, string destFileName)
{
    try
    {
        if (!sourceFileName.Equals(destFileName))
        {
            FileAttributes attr = File.GetAttributes(sourceFileName);

            if ((attr & FileAttributes.Directory).Equals(FileAttributes.Directory))
            {
                Directory.Move(sourceFileName, destFileName);
            }
            else if ((attr & FileAttributes.ReadOnly).Equals(FileAttributes.ReadOnly))
            {
                Console.WriteLine("..that is read-only");
            }
            else
            {
                File.Copy(sourceFileName, destFileName);
                File.Delete(sourceFileName);
            }
        }
        else
        {
            Console.WriteLine("..epic failure");
        }
    }
    catch (Exception e)
    {
        Console.WriteLine(e.Message);
    }
}

public void Replace(string file, string search, string repl)
{
    if (File.Exists(file))
    {
        string[] lines = File.ReadAllLines(file);

        StreamWriter sw = new StreamWriter(new FileStream(Environment.CurrentDirectory + "\\temp.txt~", FileMode.Create, FileAccess.Write));

        foreach (string line in lines)
        {
            string newLine = line.Replace(search, repl);
            sw.WriteLine(newLine);
        }

        sw.Close();

        try
        {
            File.Delete(file);
            this.RenameFileOrDirectory(Environment.CurrentDirectory + "\\temp.txt~", file);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }
}