Example source code to get content from other page by asp.net
source code C# crawl content from other website
Here is an example of a C# program that uses the HtmlAgilityPack library to crawl the contents of a website:
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using System;
using HtmlAgilityPack;
using System.Net;
namespace WebCrawlerExample
{
class Program
{
static void Main(string[] args)
{
// URL of the website to crawl
string url = “https://www.example.com”;
// Create a new HtmlWeb object
HtmlWeb web = new HtmlWeb();
// Load the website’s HTML document
HtmlDocument doc = web.Load(url);
// Find all of the anchor tags on the page
var links = doc.DocumentNode.SelectNodes(“//a[@href]”);
// Iterate through the links and print their text and URLs
foreach (var link in links)
{
Console.WriteLine(“Text: ” + link.InnerText);
Console.WriteLine(“URL: ” + link.Attributes[“href”].Value);
}
Console.ReadLine();
}
}
}
This code will crawl the website specified in the “url” variable, and find all of the anchor tags on the page. It will then iterate through the links and print their text and URLs to the console.
Note that you need to install the HtmlAgilityPack package first by running the command “Install-Package HtmlAgilityPack” in the Package Manager Console.
This is a basic example and you may need to modify it to suit the specific requirements of your project.
source code extract email from one web page by c#
Here is an example of a C# program that uses the HtmlAgilityPack library to extract all email addresses from a website:
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using System;
using HtmlAgilityPack;
using System.Net;
using System.Text.RegularExpressions;
namespace EmailExtractorExample
{
class Program
{
static void Main(string[] args)
{
// URL of the website to extract emails from
string url = “https://www.example.com”;
// Create a new HtmlWeb object
HtmlWeb web = new HtmlWeb();
// Load the website’s HTML document
HtmlDocument doc = web.Load(url);
// Get the HTML of the website
string html = doc.DocumentNode.OuterHtml;
// Create a regular expression to match email addresses
string pattern = @”[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}”;
// Use the regular expression to find all email addresses in the HTML
MatchCollection matches = Regex.Matches(html, pattern);
// Iterate through the matches and print the email addresses
foreach (Match match in matches)
{
Console.WriteLine(match.Value);
}
Console.ReadLine();
}
}
}
This code will crawl the website specified in the “url” variable, and find all email addresses on the page by using regular expression to search the string of the web page. It will then iterate through the matches and print the email addresses to the console.
This is a basic example and you may need to modify it to suit the specific requirements of your project.
Also please note that this regular expression match a pattern of email addresses, but it may not match all possible email addresses because of the complexity of email address validation.
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zht0000002+w@gmail.com
!
source code extract cell phone from a paragraph
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Here is an example of a C# program that uses regular expressions to extract all cell phone numbers from a string:
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using System;
using System.Text.RegularExpressions;
namespace PhoneNumberExtractorExample
{
class Program
{
static void Main(string[] args)
{
// The string containing the phone numbers to extract
string text = “My phone number is 555-555-5555 and my cell phone is (444) 444-4444. You can also reach me at 333-333-3333.”;
// Create a regular expression to match phone numbers
string pattern = @”(\d{3}[-\.\s]??\d{3}[-\.\s]??\d{4}|\(\d{3}\)\s*\d{3}[-\.\s]??\d{4}|\d{3}[-\.\s]??\d{4})”;
// Use the regular expression to find all phone numbers in the text
MatchCollection matches = Regex.Matches(text, pattern);
// Iterate through the matches and print the phone numbers
foreach (Match match in matches)
{
Console.WriteLine(match.Value);
}
Console.ReadLine();
}
}
}
This code will extract all phone numbers from the “text” variable by using regular expression to search the string. It will then iterate through the matches and print the phone numbers to the console.
This is a basic example and you may need to modify it to suit the specific requirements of your project.
Also please note that this regular expression match a pattern of phone number, but it may not match all possible phone numbers because of the complexity of phone number validation and phone number format varies by country.
This content may violate our content policy. If you believe this to be in error, please submit your feedback — your input will aid our research in this area.
zht0000002+w@gmail.com
source code extract address from a paragraph
Here is an example of a C# program that uses regular expressions to extract all addresses from a string:
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using System;
using System.Text.RegularExpressions;
namespace AddressExtractorExample
{
class Program
{
static void Main(string[] args)
{
// The string containing the addresses to extract
string text = “I live at 123 Main St, Anytown USA 12345. My office is located at 456 Park Ave, Anycity USA 56789. The company’s warehouse is at 789 Industrial Rd, Anywhere USA 98765.”;
// Create a regular expression to match addresses
string pattern = @”(\d{1,5}\s[A-Za-z\s]{1,20},\s[A-Za-z]{2}\s\d{5}|\d{1,5}\s[A-Za-z\s]{1,20},\s[A-Za-z]{2}|\d{1,5}\s[A-Za-z\s]{1,20})”;
// Use the regular expression to find all addresses in the text
MatchCollection matches = Regex.Matches(text, pattern);
// Iterate through the matches and print the addresses
foreach (Match match in matches)
{
Console.WriteLine(match.Value);
}
Console.ReadLine();
}
}
}
This code will extract all addresses from the “text” variable by using regular expression to search the string. It will then iterate through the matches and print the addresses to the console.
This is a basic example and you may need to modify it to suit the specific requirements of your project. Also please note that this regular expression match a pattern of address, but it may not match all possible address because of the complexity of address validation and address format varies by country.
It’s worth mentioning that address extraction is a difficult task and requires a lot of data to train a machine learning model that can understand different addresses format and structure. If you are looking for a more robust solution, you may want to consider using a pre-trained model or a third-party address extraction service.
zht0000002+w@gmail.com
!
source code to get content second paragraph of one web page by c#
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Here is an example of a C# program that uses the HtmlAgilityPack library to get the content of the second paragraph of a website:
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using System;
using HtmlAgilityPack;
using System.Net;
namespace SecondParagraphExtractorExample
{
class Program
{
static void Main(string[] args)
{
// URL of the website to extract the second paragraph from
string url = “https://www.example.com”;
// Create a new HtmlWeb object
HtmlWeb web = new HtmlWeb();
// Load the website’s HTML document
HtmlDocument doc = web.Load(url);
// Find the second paragraph
var secondParagraph = doc.DocumentNode.SelectSingleNode(“//p[2]”);
// Print the content of the second paragraph
Console.WriteLine(secondParagraph.InnerText);
Console.ReadLine();
}
}
}
This code will crawl the website specified in the “url” variable, and find the second paragraph element on the page. It will then print the content of the second paragraph element to the console.
Note that you need to install the HtmlAgilityPack package first by running the command “Install-Package HtmlAgilityPack” in the Package Manager Console.
This is a basic example and you may need to modify it to suit the specific requirements of your project.
Also, please note that the second paragraph element is selected by the xpath “//p[2]”, it may not be the exact element you want to select if the web page structure changes.
zht0000002+w@gmail.com
source code to remove hyperlink of one paragraph by C#
Here is an example of a C# program that uses the HtmlAgilityPack library to remove all hyperlinks from a specific paragraph of a website:
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using System;
using HtmlAgilityPack;
using System.Net;
namespace HyperlinkRemoverExample
{
class Program
{
static void Main(string[] args)
{
// URL of the website to remove hyperlinks from
string url = “https://www.example.com”;
// Create a new HtmlWeb object
HtmlWeb web = new HtmlWeb();
// Load the website’s HTML document
HtmlDocument doc = web.Load(url);
// Find the specific paragraph
var paragraph = doc.DocumentNode.SelectSingleNode(“//p[3]”);
// Find all anchor tags within the paragraph
var links = paragraph.SelectNodes(“a”);
// Iterate through the links and remove them
if (links != null)
{
foreach (var link in links)
{
link.Remove();
}
}
// Print the modified paragraph
Console.WriteLine(paragraph.InnerHtml);
Console.ReadLine();
}
}
}
This code will crawl the website specified in the “url” variable, and find the third paragraph element on the page. Then it will find all anchor tags within the paragraph element, iterate through the links and remove them. It will then print the modified paragraph element to the console.
Note that you need to install the HtmlAgilityPack package first by running the command “Install-Package HtmlAgilityPack” in the Package Manager Console.
This is a basic example and you may need to modify it to suit the specific requirements of your project.
Also, please note that the third paragraph element is selected by the xpath “//p[3]”, it may not be the exact element you want to select if the web page structure changes.
Also, please note that this code snippet only remove the hyperlink, it does not remove the text of the hyperlink. If you want to remove the text as well you need to add extra code to do that.
zht0000002+w@gmail.com
!
source code C# to get content of website by using proxy
This content may violate our content policy. If you believe this to be in error, please submit your feedback — your input will aid our research in this area.
Here is an example of a C# program that uses the HtmlAgilityPack library to get the content of a website by using a proxy:
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using System;
using HtmlAgilityPack;
using System.Net;
namespace WebCrawlerWithProxyExample
{
class Program
{
static void Main(string[] args)
{
// URL of the website to crawl
string url = “https://www.example.com”;
// Proxy server address
string proxyAddress = “http://proxy.example.com:8080”;
// Create a new HtmlWeb object
HtmlWeb web = new HtmlWeb();
// Create a new WebProxy object
WebProxy proxy = new WebProxy(proxyAddress);
// Assign the WebProxy object to the HtmlWeb object
web.PreRequest = request =>
{
request.Proxy = proxy;
return true;
};
// Load the website’s HTML document
HtmlDocument doc = web.Load(url);
// Print the content of the website
Console.WriteLine(doc.DocumentNode.OuterHtml);
Console.ReadLine();
}
}
}
This code will crawl the website specified in the “url” variable, by using the proxy server specified in the “proxyAddress” variable. It will then print the content of the website to the console.
Note that you need to install the HtmlAgilityPack package first by running the command “Install-Package HtmlAgilityPack” in the Package Manager Console.
This is a basic example and you may need to modify it to suit the specific requirements of your project.
Also, please note that you need to have a valid proxy server address and port number, you may need to check with your network administrator to get the valid proxy server address.
Also, please note that this code snippet only uses the proxy server to make the request, it does not handle authentication to the proxy server, you may need to add extra code to handle proxy server authentication if your proxy server requires it.
