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Convert Javascript HMAC to C#

hmac = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, secret_buffer);
hmac.update(path, secret_buffer);
var Sign= hmac.finalize();
var signature = base64_encode(Sign);
Already Tried with C# as like but unable to get the same answer
var key1 = sha1.ComputeHash(Encoding.UTF8.GetBytes("Test"));
var key2 = key1.Concat(Encoding.UTF8.GetBytes("Test"));
var key3 = sha1.ComputeHash(key2);
var hmac= Convert.ToBase64String(key3);
Please give some solution ?

Your JS code is equivalent to the following code (assuming that your base64_encode() method is implemented correctly):
var secret_buffer = "secret";
var path = "text";
signature = CryptoJS.HmacSHA256(path, secret_buffer).toString(CryptoJS.enc.Base64);
console.log(signature);
In С#, the equivalent would be:
string secret_buffer = "secret";
string path = "text";
using (var hmacsha256 = new HMACSHA256(Encoding.UTF8.GetBytes(secret_buffer)))
{
var hash = hmacsha256.ComputeHash(Encoding.UTF8.GetBytes(path));
var signature = Convert.ToBase64String(hash);
Console.WriteLine(signature);
}

How can I pick out a number from a string in C#

I have this string:
http://www.edrdg.org/jmdictdb/cgi-bin/edform.py?svc=jmdict&sid=&q=1007040&a=2
How can I pick out the number between "q=" and "&amp" as an integer?
So in this case I want to get the number: 1007040

What you're actually doing is parsing a URI - so you can use the .Net library to do this properly as follows:
var str = "http://www.edrdg.org/jmdictdb/cgi-bin/edform.py?svc=jmdict&sid=&q=1007040&a=2";
var uri = new Uri(str);
var query = uri.Query;
var dict = System.Web.HttpUtility.ParseQueryString(query);
Console.WriteLine(dict["amp;q"]); // Outputs 1007040
If you want the numeric string as an integer then you'd need to parse it:
int number = int.Parse(dict["amp;q"]);

Consider using regular expressions
String str = "http://www.edrdg.org/jmdictdb/cgi-bin/edform.py?svc=jmdict&sid=&q=1007040&a=2";
Match match = Regex.Match(str, #"q=\d+&amp");
if (match.Success)
{
string resultStr = match.Value.Replace("q=", String.Empty).Replace("&amp", String.Empty);
int.TryParse(resultStr, out int result); // result = 1007040
}

Seems like you want a query parameter for a uri that's html encoded. You could do:
Uri uri = new Uri(HttpUtility.HtmlDecode("http://www.edrdg.org/jmdictdb/cgi-bin/edform.py?svc=jmdict&sid=&q=1007040&a=2"));
string q = HttpUtility.ParseQueryString(uri.Query).Get("q");
int qint = int.Parse(q);

A regex approach using groups:
public int GetInt(string str)
{
var match = Regex.Match(str,#"q=(\d*)&amp");
return int.Parse(match.Groups[1].Value);
}
Absolutely no error checking in that!

Can't get Regex group value

The string I'm trying to parse from looks something like this:
{"F4q6i9xe":{"Hhgi79M1":"cTZ3W2JG","j0Uszek2":"0"},"a3vSYuq2":{"Kn51uR4Y":"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"}}
And this is my regular expression:
Hhgi79M1":"(?<encodeKeyID>.*?)",.*Kn51uR4Y":"(?<encodedBody>.*?)"}
And this is the code I'm using in my C# application:
string responsePattern = "Hhgi79M1\":\"(?<encodeKeyID>.*?)\",.*Kn51uR4Y\":\"(?<encodedBody>.*?)\"}";
if (Regex.IsMatch(body, responsePattern))
{
var match = Regex.Match(body, responsePattern);
string encodeKeyID = match.Groups["encodeKeyID"].Value;
string encodedBody = match.Groups["encodedBody"].Value;
Now it works, but it doesn't get the value of "encodedBody". I tested my expression with the data on https://regex101.com/ and it seems to work fine on there. However, when getting the value in my program it's just an empty string.

I sense the issue is that your body string is not escaped properly, as your pattern works fine in the following code:
string body = "{\"F4q6i9xe\":{\"Hhgi79M1\":\"cTZ3W2JG\",\"j0Uszek2\":\"0\"},\"a3vSYuq2\":{\"Kn51uR4Y\":\"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\"}}\n" +
"";
string responsePattern = "Hhgi79M1\":\"(?<encodeKeyID>.*?)\",.*Kn51uR4Y\":\"(?<encodedBody>.*?)\"}";
if (Regex.IsMatch(body, responsePattern))
{
var match = Regex.Match(body, responsePattern);
string encodeKeyID = match.Groups["encodeKeyID"].Value;
string encodedBody = match.Groups["encodedBody"].Value;
string msg = String.Format("encodeKeyID: {0}\nencodedBody: {1}", encodeKeyID, encodedBody);
//show in message box
MessageBox.Show(msg, "Pattern Match Result");
}
Output:

Try it this way.
string sTarget = #"
{""F4q6i9xe"":{""Hhgi79M1"":""cTZ3W2JG"",""j0Uszek2"":""0""},""a3vSYuq2"":{""Kn51uR4Y"":""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""}}
";
Regex responseRx = new Regex(#"Hhgi79M1"":""(?<encodeKeyID>.*?)"",.*Kn51uR4Y"":""(?<encodedBody>.*?)""}");
Match responseMatch = responseRx.Match(sTarget);
if (responseMatch.Success)
{
Console.WriteLine("ID = {0}", responseMatch.Groups["encodeKeyID"].Value);
Console.WriteLine("Body = {0}", responseMatch.Groups["encodedBody"].Value);
}
Output
ID = cTZ3W2JG
Body = c6QUklQzv+kRLnmvS0zsheqDsRCXbWFVpYhq2rsElKyFQnla01E6P3qQ26b+xWSrscFJCi2qs
h6WjJKSW5FN9EwxRAWc3rfyToaEhRngI2WPu3W\/b1\/hkkS2tEEk7LEpS2ItxLYKjEQGneO5E9rcGzb
tfSOikdIjhxpD5m9HsKayo2ZSc2EYd\/cN9yfYrNfLOCx+xeGqGcPmmImAzOZM0Q1IXIDQZ5r70vUS1a
UOMOFnN1fVxmQ8ISofEKNEpHFfwWW9QUl9eVDgpQ2HES13s20kvVH2FOlE5uahIJBnyTLWYzViAWYyX1
3VK2PgrQcZ0oLuV84bSbjHGZf+JAjvImuyYhkKDhtTWAGkQ8LZ6r07duo71Gbz3glOUZZyz+FFiH5Krw
afBpzGhRlI8El6lLZASN9Z5iZNTKs+sOti1fzsuOBzUXEjFURJGa93GMqPC+OyTw6YxKvgapz7go1XL7
EAf50UXpMHd9xAJzsuIb6\/lB\/6v+XjD70wc74D2OosxtR6DIbQj3gbaBUBABQsJHQZLNnHWqikh+HL
CASVbkqw6YPm5NecGaOQxonDkh3ZVQSF15WCEsgNdoWG94OuLF8DSw1t1Kt8sMFkvBJgB7LJS3pAw\/T
cg\/rvR5qwZ\/n31rtOzaJgCdVc6XeIK6Rttj4KvNtgtTwkJIjb97FgIS0CXrR0UCp3BsuLwQg3CRTnj
QqsjGgJeinLXX2lq6vNOkxRzgXlWnap96kheYj7sIE\/IxbJJWEIInMbH9HU\/w0bS0MtIgofpIQAZ\/
m6XKhu9LpPZBgsBf9KX5chUPeuRfs3MfHFzPYPlCCd2dkE8BHKOTmfS3okqhkzIZvFN3Ni+7enktFdgf
pQ0toQbjhpn\/TszP34pBaIy77me+GvePNO5bAFECLWSpGvsmW16rLCP0H+xIS\/lNf9hK98jQqGU7eq
pQdai7WFie2yN75Up7MrgBMp5w9Z5C7qpG2iYGiqynpqTCEnfQ3IZumbL+YvGTiuI2c320MGjKzOdO45
MIU5fxUNZQSIfCSyIq5G\/XGIeXCG3KETyKDZygXUTgEWbJWNTADE0AhXvP7HMtsuvstyuHvlTZGcfKS
4oLnDPFiV1ndIV7+W74Ytv9bAdDIVl36xTzA2PV6waqXBfSPUCTx3jVrAeXcHGFjZtxbk3pFmuqPqgVc
xeX\/aDbK0NHkR6phQcFEREBjfdCOLAAbCkWiRF0JAA==

Working with Regex to get 2 strings out of a source code [duplicate]

I am using webrequest to download a source from a page and then I need to use Regex to grab the string and store it in a string:
U_nQgAjU_tdUnfcA7lT5opoTLyLdslWDTpiNzcdkLoHlobS_HbujMw..
also need:
bpvsid=nvnN2JFJqJc.&dcz=1
Both out of:
<td style="cursor:pointer;" class="" onclick="NewWindow('U_nQgAjU_tdUnfcA7lT5opoTLyLdslWDTpiNzcdkLoHlobS_HbujMw..', 'bpvsid=nvnN2JFJqJc.&dcz=1', 'bpvstage_edit', '1200', '800')" onmouseout="HideHover();"><img src="gfx/info.gif" alt="" tipwidth="450" ajaxtip="openajax.php?target=modules/bpv/bpvstage_hover_info.php&rid=&oid=&bpvsid=&bpvname=" /></td>
It keep giving me errors like not enough )'s?
Thanks in advance.
Current code, probably wrong in every way. Really new to this:
Regex rx = new Regex("(?<=class=\"\" onclick=\"NewWindow(').*(?=')");
longId = (rx.Match(textBox2.Text).Value);
textBox1.Text = longId;

var match = Regex.Match(s, #"onclick=""NewWindow\('([^']*)',\s*'([^']*)',.*");
if (match.Success)
{
string longId = match.Groups[1].Value;
string other = match.Groups[2].Value;
}
That will give you two groups with values:
U_nQgAjU_tdUnfcA7lT5opoTLyLdslWDTpiNzcdkLoHlobS_HbujMw..
bpvsid=nvnN2JFJqJc.&dcz=1

The regex NewWindow\('([^']*)', '([^']*) will match what you require. The two strings required will be in Groups[1] and Groups[2].
var match = Regex.Match(textBox2.Text, "NewWindow\('([^']*)', '([^']*)");
var id1 = match.Groups[1].Value;
var id2 = match.Groups[2].Value;

Note that you could also use simply string functions instead of a regex:
var s = "<td style=\"cursor:pointer;\" class=\"\" onclick=\"NewWindow('U_nQgAjU_tdUnfcA7lT5opoTLyLdslWDTpiNzcdkLoHlobS_HbujMw..', 'bpvsid=nvnN2JFJqJc.&dcz=1', 'bpvstage_edit', '1200', '800')\" onmouseout=\"HideHover();\"><img src=\"gfx/info.gif\" alt=\"\" tipwidth=\"450\" ajaxtip=\"openajax.php?target=modules/bpv/bpvstage_hover_info.php&rid=&oid=&bpvsid=&bpvname=\" /></td>";
var tmp = s.Substring(s.IndexOf("NewWindow('")).Split('\'');
var value1 = tmp[1]; // U_nQgAjU_tdUnfcA7lT5opoTLyLdslWDTpiNzcdkLoHlobS_HbujMw..
var value2 = tmp[3]; // bpvsid=nvnN2JFJqJc.&dcz=1

I would use HtmlAgilityPack to parse HTML, then this non-regex approach works:
string html = // get your html ...
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html); // doc.Load can also consume a response-stream directly
var result = Enumerable.Empty<string>();
var firstTD = doc.DocumentNode.SelectNodes("//td").FirstOrDefault();
if (firstTD != null)
{
if (firstTD.Attributes.Contains("onclick"))
{
string onclick = firstTD.Attributes["onclick"].Value;
int newWindowIndex = onclick.IndexOf("newWindow(", StringComparison.OrdinalIgnoreCase);
if (newWindowIndex >= 0)
{
string functionBody = onclick.Substring(newWindowIndex + "newWindow(".Length);
string[] tokens = functionBody.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
result = tokens.Take(2).Select(s => s.Trim(' ', '\''));
}
}
}

Remove HTML from string

I am trying to clear the HTML coding from my RSS feed. I can not work out how to set the below to take out the HTML encoding.
var rssFeed = XElement.Parse(e.Result);
var currentFeed = this.DataContext as app.ViewModels.FeedViewModel;
var items = from item in rssFeed.Descendants("item")
select new ATP_Tennis_App.ViewModels.FeedItemViewModel()
{
Title = item.Element("title").Value,
DatePublished = DateTime.Parse(item.Element("pubDate").Value),
Url = item.Element("link").Value,
Description = item.Element("description").Value
};
foreach (var item in items)
currentFeed.Items.Add(item);

Just use the following code:
var withHtml = "<p>hello <b>there</b></p>";
var withoutHtml = Regex.Replace(withHtml, "<.+?>", string.Empty);
This will clean the html leaving only the text, so "hello there"
So, you can just copy and use this function:
string RemoveHtmlTags(string html) {
return Regex.Replace(html, "<.+?>", string.Empty);
}
Your code will look something like this:
var rssFeed = XElement.Parse(e.Result);
var currentFeed = this.DataContext as app.ViewModels.FeedViewModel;
var items = from item in rssFeed.Descendants("item")
select new ATP_Tennis_App.ViewModels.FeedItemViewModel()
{
Title = RemoveHtmlTags(item.Element("title").Value),
DatePublished = DateTime.Parse(item.Element("pubDate").Value),
Url = item.Element("link").Value,
Description = RemoveHtml(item.Element("description").Value)
};

You can use this code sample, it works fine on my side
public static string RemoveHTMLTags(string value)
{
string step1 = Regex.Replace(value, "<[^>]*>", " ");
string step2 = HttpUtility.HtmlDecode(step1);
return step2;
}
I hope, this code helps you.

Use the following class utility:
HttpUtility.HtmlDecode(string);
Please don't refer this answer no more.