registry operation

Question

In .net I want to develop a install solution which install my program into a path and the path is used in the program,so I think I can write the install path into the registry file when install the program,and in my program ,I read the specifi ed key value in the registry file.But how to write the install path into the regi stry file in the intall solution?

Answer 1

If you have multiple <img> tags, you can do:

 string regExp3 = @"<img src=""(.*?)"""; // as before
 MatchCollection mc = Regex.Matches(html, regExp3);

 foreach(Match m in mc) Console.WriteLine(m.Groups[1].Value);

Answer 2

Hi Vulpes,

If i have more than one image, how can get all images with their path.

Thanks,

Darma

Answer 3

Hi,

Im not sure why it wasn't working for you. HtmlAgilityPack is well tested and is fast. 

Here is the code 


static void Main(string[] args)
{

var doc = new HtmlDocument();
doc.Load("e:\\temp\\dharma.html");

string align = string.Empty,src = string.Empty,title = string.Empty;

var titleNode = doc.DocumentNode.SelectSingleNode("//title");
if(titleNode != null)
{
title = titleNode.InnerText;
}

var p = doc.DocumentNode.SelectSingleNode("//p[@align]");
if(p != null)
{
align = p.Attributes["align"].Value;
}
var img = doc.DocumentNode.SelectSingleNode("//img[@src]");
if(img != null)
{
src = img.Attributes["src"].Value;
}

Console.WriteLine(title);
Console.WriteLine(align);
Console.WriteLine(src);
}

Answer 4

Hi Vulpes and Raj,

Thanks for the replies.

@Vulpes: Perfectly, It is working.

@ Raj: First I tried with "HtmlAgilityPack", Unfortunately it was not working. 


Thanks,

Darma

Answer 5

Hmm,

Sorry my bad incorrectly interpreted, I thought it was on the client side in browser, so you want read this in C#, 

Use HtmlAgilityPack  http://htmlagilitypack.codeplex.com/, add references to your project.

var doc = new HtmlDocment();
doc.load("yourfile.htm");


Use xpath queries something like this
var p = doc.DocumentElement.SelectNodes("//p[@align]");

Answer 6

Here's a different approach using regular expressions.

As I don't know what type of application you're writing, I've used a console application for illustration:

using System;

using System.IO;

using System.Text.RegularExpressions;

class Test

{

   static void Main()

   {

      string html = File.ReadAllText("darma.html");

      string regExp1 = "<TITLE>(.*?)</TITLE>";

      string title = Regex.Match(html, regExp1).Groups[1].Value;

      Console.WriteLine(title);

      string regExp2 = @"<p align=""(.*?)"">";

      string align = Regex.Match(html, regExp2).Groups[1].Value;

      Console.WriteLine(align);

      string regExp3 = @"<img src=""(.*?)""";

      string img = Regex.Match(html, regExp3).Groups[1].Value;

      Console.WriteLine(img);

      Console.ReadKey();

   }

}

The output, as expected, is:

MY WEBSITE

left

boat.gif

Answer 7

Hi Raj,

Thanks for the reply.

Which class I should use to load my html file by giving file path.

Thanks

Darma

Answer 8

//MY WEBSITE

var title = document.title;  


//left value, Note: without an id, get p first element, with id use document.getElementById
var align = document.getElementsByTagName("p")[0].getAttribute("align");

//boat.gif
var src = document.getElementsByTagName("img")[0].getAttribute("src");


Call above scripts when dom is ready i,e. either call a function on body load or include above script between </body> and </html> tags(when all the dom elements are processed).

Hope this helps,

Cheers,
Raj