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How can I send URL parameter in ASP.NET Core Web API parameters

I wrote this code in a C# ASP.NET Core Web API project:
[HttpGet]
[Route("GetShortURL/{_url}/{tokenPass}")]
[ApiExplorerSettings(GroupName = "ShortURL")]
public ActionResult<ServiceResult<string>> GetShortURL(string _url, string tokenPass)
When I enter this parameter as _url, I get an error:
Error: Not Found
https://github.com/VahidN/DNTPersianUtils.Core
http://...//GetShortURL/https%3A%2F%2Fgithub.com%2FVahidN%2FDNTPersianUtils.Core/TokenPass
How can I call this API with the first Web URL parameter?
when i change the [Route("GetShortURL/{_url}/{tokenPass}")] to [Route("GetShortURL")] the problem was solved but i want to send query by / not by ?
for example, i want to call API like this :
1- http://..../GetShortURL/_UrlParam/_TokenPassParam
not like below :
2- http://..../GetShortURL?_url=_urlParam&tokenPass=_TokenPassParam
the second way works fine but I want first way to work correctly when i pass an URL like this
https%3A%2F%2Fgithub.com%2FVahidN%2FDNTPersianUtils.Core
can anyone help me?

First approach:
Pass the params you want as query string and then change the method like below:
[HttpGet("GetShortURL")]
[ApiExplorerSettings(GroupName = "ShortURL")]
public ActionResult<ServiceResult<string>> GetShortURL(string _url, string tokenPass)
Then For extracting the different parts of the url (protocol, domain name, path and query string), use the code below (path is an array separated by slash):
try
{
var decodedUrl = System.Web.HttpUtility.UrlDecode(_url);
Uri uri = new Uri(decodedUrl);
var scheme = uri.Scheme;
var host = uri.Host;
var absolutePathSeperatedBySlash = uri.AbsolutePath.Split('/').Skip(1).ToList();
var query = uri.Query;
// rest of the code ...
}
catch (Exception ex)
{
//...
}
Second approach:
If you want it to be sent as a url parameter, first you have to encode the value of _url with encodeURIComponent() in javascript, to make sure that some special characters like , / ? : # & = + $ # are changed.
Then:
[HttpGet("GetShortURL/{_url}/{tokenPass}")]
[ApiExplorerSettings(GroupName = "ShortURL")]
public ActionResult<ServiceResult<string>> GetShortURL(string _url, string tokenPass)
The rest is just like the method body of the first approach.

With the following url
http://...//GetShortURL/https%3A%2F%2Fgithub.com%2FVahidN%2FDNTPersianUtils.Core/TokenPass
The value of _url will be:
If you want to convert it to a correct url,you needs to replace %2F with / in GetShortURL:
var url = _url.Replace("%2F","/");

just make parameters to be optional
[HttpGet("GetShortURL/{_url?}/{tokenPass?}")]
public ActionResult<ServiceResult<string>> GetShortURL(string _url, string tokenPass)
in this case you can call the action without any parameters, with one parameter or with two parameters

AbsoluteUri need to return correct path

Using method bellow in my MVC view I am getting URL like "localhost:54871/Home/Index" but I don't want "Index" on last. It should be only "localhost:54871/Home". How should I implement this?
#(Request.Url.AbsoluteUri)
Thank you for your help!

While using Request.Url.AbsoluteUri the url changes based on the user's current page.
If user visits http://localhost:0000/Home/ then AbsoluteUri is http://localhost:0000/Home/
If user visits http://localhost:0000/Home/Index then AbsoluteUri is http://localhost:0000/Home/Index
In MVC url generation is based on the route definition defined in RouteConfig.cs file.
You can define route just for controller name, check this and this
Also there is another solution as below:
#{
Uri uriAddress = new Uri(Request.Url.AbsoluteUri);
string urlLeftPart = uriAddress.GetLeftPart(UriPartial.Authority);
string controllerName = HttpContext.Current.Request.RequestContext.RouteData.
Values["controller"].ToString();
string finalURL = urlLeftPart + "/" + controllerName;
}
Url Without Action Name
References
1.
2.

You can try the below one.
For Example if the url with parameters are like below
http://localhost:61221/Websitetest/Default1.aspx?QueryString1=1&QueryString2=2
Then by using the below code you can get the results
HttpContext.Current.Request.Url.Host
HttpContext.Current.Request.Url.Authority
HttpContext.Current.Request.Url.Port
HttpContext.Current.Request.Url.AbsolutePath
HttpContext.Current.Request.ApplicationPath
HttpContext.Current.Request.Url.AbsoluteUri
HttpContext.Current.Request.Url.PathAndQuery
will provide the output like below
OUTPUT
localhost
localhost:61221
61221
/Websitetest/Default1.aspx
/Websitetest
http://localhost:61221/Websitetest/Default1.aspx?QueryString1=1&QueryString1=2
/Websitetest/Default1.aspx?QueryString1=1&QueryString2=2

replace partial url with another url in c#?

I have URL need to replace partial url with another url.
Original Url
http://oldurl/dept/it/Lists/Contract Management System/DispForm.aspx?ID=4
I want to replace just http://oldurl (only) with http://www.newurl.com. Rest of the url will change dynamically.

Request.oldURL.GetLeftPart(UriPartial.Authority) will return your base url string which is http://oldurl
string oldURL = "http://oldurl/bs/blabla";
string newURL = oldURL.Replace(Request.oldURL.GetLeftPart(UriPartial.Authority), "http://www.newurl.com");
See more: https://msdn.microsoft.com/en-us/library/system.uri.getleftpart(v=vs.110).aspx

in asp.net-mvc controller, what is the best way to generate a URL

right now i take the
RequestContext
and pass this into a UrlHelper like this:
UrlHelper u = new UrlHelper(context);
string hrSyncUrl = u.Action("Update", "Person");
but the issue is that this seems to return:
/Person/Update
instead of:
http://www.mysite.com/Person/Update
so, given a controller and and action name, how can i generate a FULL url from inside a controller?
the reason that i need this is that i am generating an email so i need the full url to put in the body of that email.

By using the proper overload:
string hrSyncUrl = u.Action("Update", "Person", null, "http");
And to avoid hardcoding the protocol you could fetch it from the request:
var protocol = context.HttpContext.Request.Url.Scheme;
string hrSyncUrl = u.Action("Update", "Person", null, protocol);

see ASP.NET MVC create absolute url from c# code

"Dynamic" parts in URL

The application i'm making starts Internet Explorer with a specific URL.
for instance, this fake url:
&aqi=g10&aql="3"&oq="3"
how can i change that url into this one:
&aqi=g10&aql="2"&oq="2"
by using an item from a combobox?
What i'm trying to do is changing a part of the URL with selecting an item in a combobox and then executing the URL in IE.
anyone ideas?
(not sure if the title is right)
thanks in advance

If I understood correctly what you're trying to do, you can get the query string parameters with Request.QueryString, do the manipulations as per the selections in the combobox, then build the new URL and redirect to it with Response.Redirect.
http://msdn.microsoft.com/en-us/library/system.web.httprequest.querystring.aspx
http://msdn.microsoft.com/en-us/library/t9dwyts4.aspx
Something like:
// get the URL from the Request and remove the query string part
string newUrl = Request.Url.ToString().Replace(Request.Url.Query, "");
newUrl += string.Format("?aqi={0}&aql={1}&oq={2}",
Request.QueryString["aqi"], ddlAql.SelectedValue, ddlOq.SelectedValue);
Response.Redirect(newUrl);

Build the url in code:
string url = "&aqi=g10&aql=\"" + comboBox1.Text + "\"&oq=\"" + comboBox2.Text + \"";