How can I extract a specific text from a string?

Question

I need to find the part of the string between the two tags :

First tag <h3><a href="/questions/
Last tag " class

I'm trying to use indexof and substring but what should I do with the substring ?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MyString
{
    public partial class Form1 : Form
    {
        private string htmlCode = "";

        public Form1()
        {
            InitializeComponent();

            var myString = GetSources();

            int index = myString.IndexOf("<h3><a href=") + 11;
            string restulr = myString.Substring(index, )

            // <h3><a href="/questions/ 
            // " class
        }

        private string GetSources()
        {
            using (WebClient client = new WebClient()) // WebClient class inherits IDisposable
            {
                htmlCode = client.DownloadString("https://myStringTest.com");
            }

            return htmlCode;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}

Do you want the rest of the string starting at the index? then just leave the call as you have it. If you know the length of the rest of the string then put that in the call to substring(index, length). not to sure how much of the string you want to pull out of the parent string — Nick M., Sep 20 '20 at 12:11

score -1 · Answer 1 · answered Sep 30 '20 at 19:46

-1

Use RegEx to separate HTML or use the Html Agility Pack (HAP).

answered Sep 30 '20 at 19:46

RFE Petr

647
2
7
19

How can I extract a specific text from a string?

1 Answers1