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I want to download a specif string from website but I am not sure how I achieve it the best way.
Right now I do it like this:
using (WebClient webClient = new WebClient())
{
string htmlString = webClient.DownloadString(url);
string encoding = WebUtility.UrlDecode(htmlString);
Console.WriteLine(encoding);
}
However, this returns the whole webpage as a string, can I somehow only download a specific part of the URL?
If the webserver support byte serving (Accept-Ranges header) then you can access a part of the document.
https://en.wikipedia.org/wiki/Byte_serving
https://msdn.microsoft.com/library/7fy67z6d(v=vs.100).aspx
https://blogs.msdn.microsoft.com/webdev/2012/11/23/asp-net-web-api-and-http-byte-range-support/
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Is there a posiblity to store and load a guid list in a file?
List<Guid> targetFaceIds = new List<Guid>();
foreach (var imageFileName in targetImageFileNames)
{
List<DetectedFace> detectedFaces = await DetectFaceRecognize(client, _imagePath + imageFileName, recognitionModel);
targetFaceIds.Add(detectedFaces[0].FaceId.Value);
}
In my programm I want to store 'targetFaceIds' in a file is that possible and how can I load it back form the file in my programm.
In my 'targetFaceIds' is this:
You can use guid.ToString to convert it to a string and Guid.Parse to parse it back to a Guid:
File.WriteAllLines(path, targetFaceIds.Select(g => g.ToString())); // write
targetFaceIds = File.ReadAllLines(path).Select(Guid.Parse).ToList(); // read
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Can Anyone explain the use of the below lines in .net MVC
string apiResponse = await response.Content.ReadAsStringAsync();
_hdfcData = JsonConvert.DeserializeObject<HDFCData>(apiResponse);
string apiResponse = await response.Content.ReadAsStringAsync();
get http response message and serialize it to string
_hdfcData = JsonConvert.DeserializeObject<HDFCData>(apiResponse);
deserialize the string to HDFCData type
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My question is about the following html: https://pastebin.com/qT97gBh5
I download the HTML Site by using
var url = "https://www.twitch.tv/monstercat";
var web = new HtmlWeb();
var doc = web.Load(url);
Now the only thing that interests me is the JSON Data off the following section.
<script type="application/ld+json">[{"#context":"http://schema.org","#type":"VideoObject","thumbnailUrl":["https://static-cdn.jtvnw.net/previews-ttv/live_user_monstercat-{width}x{height}.jpg"],"embedUrl":"https://player.twitch.tv/?channel=monstercat&player=facebook&autoplay=true","name":"Monstercat - Twitch","description":"Non Stop Music - Monstercat Radio 🎶","videoQuality":"1080p","publication":{"#type":"BroadcastEvent","isLiveBroadcast":true,"startDate":"03/29/2020 19:04:06"},"author":{"#type":"Person","name":"Monstercat","url":"https://www.twitch.tv/monstercat"},"uploadDate":"03/29/2020 19:04:06"}]</script>
How would i use HtmlAgilityPack to use the xpath
/html/head/script[2] to receive the JSON Data?
you can search about agility pack in c# and after that use agility to get this X path
/html/head/script[2]
now you have a json string. convert json to property with newtonsoft(add this package with Nuget).congratulation so you can read description in your class.
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Url is like That:
http://localhost:620251/Default.aspx/?group=Bkgbdsconsumer & Retailmailinglist
Want the group value on cs page:
Bkgbdsconsumer & Retailmailinglist
I ma doing this:
string group= HttpUtility.UrlEncode(Request.QueryString["group"]);
EDIT:
Ok, as I thought, there is no space before and after & in your URL.
Also port number is too big 620251 (max is 65535 as I think).
// 'fixed' port number
string url = #"http://localhost:12345/Default.aspx/?group=Bkgbdsconsumer&Retailmailinglist";
Uri myUri = new Uri (url);
var groupValue = HttpUtility.ParseQueryString (myUri.Query)["group"];
string[] allKeysWithoutValue = HttpUtility.ParseQueryString (myUri.Query).GetValues (null);
Now allKeysWithoutValue is an array with one element Retailmailinglist.
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I want to scan a portion of the webpage for specific URLs using htmlagilitypack and C#. How can I do it? For example I would like to scan only the links of the ads from this page http://www.olx.in/mobile-phones-cat-831 and not all the links.
It looks like each of the Add links is nested inside a div with a specific class (adListDetails), so one can look for any links inside a div with said class. That would look like this:
var nodes = document.DocumentNode.SelectNodes("//div[class='#adListDetails']//a[#src]");
foreach (var node in nodes)
{
string src = node.Attributes["src"].Value;
}
Learn more XPath from a source like w3schools.