Gratter site web c#
Exemples de code
C# gratter document html
// install first using
// Install-Package AngleSharp
// then
using System;
using AngleSharp;
using AngleSharp.Html.Parser;
class MyClass {
static async Task Main() {
//Use the default configuration for AngleSharp
var config = Configuration.Default;
//Create a new context for evaluating webpages with the given config
var context = BrowsingContext.New(config);
//Source to be parsed
var source = "<h1>Some example source</h1><p>This is a paragraph element";
//Create a virtual request to specify the document to load (here from our fixed string)
var document = await context.OpenAsync(req => req.Content(source));
//Do something with document like the following
Console.WriteLine("Serializing the (original) document:");
Console.WriteLine(document.DocumentElement.OuterHtml);
var p = document.CreateElement("p");
p.TextContent = "This is another paragraph.";
Console.WriteLine("Inserting another element in the body ...");
document.Body.AppendChild(p);
Console.WriteLine("Serializing the document again:");
Console.WriteLine(document.DocumentElement.OuterHtml);
}
}c# web grattage obtenir des images à partir d'une url spécifique
static void browser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser browser = (WebBrowser)sender;
HtmlElementCollection collection;
List<HtmlElement> imgListString = new List<HtmlElement>();
if (browser != null)
{
if (browser.Document != null)
{
collection = browser.Document.GetElementsByTagName("img");
if (collection != null)
{
foreach (HtmlElement element in collection)
{
WebClient wClient = new WebClient();
string urlDownload = element.GetAttribute("src");
wClient.DownloadFile(urlDownload, urlDownload.Substring(urlDownload.LastIndexOf('/')));
}
}
}
}
}Pages connexes
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