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Generate cURL request from WebAPI HTTP Request c#

Trying to generate a cURL string from an incoming request in my c# web api. Not sure how to proceed. I could of course take all parts and create it myself but I was wondering if there are some easier ways of doing it?
For example a request:
curl --location --request POST 'http://localhost:54521/v2/Token'
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'username=usr' \
--data-urlencode 'password=password' \
--data-urlencode 'grant_type=password'
Then generating it again on my API - as a string, that I could use with cURL. Suggestions?

using cUrl from c#

I am trying to connect to clarify photo tagging service using c#. unfortunately they do not have a client api and I need to send cURL requests
The company website display the following code
curl "https://api.clarifai.com/v1/tag/" \
-X POST -F "encoded_data=#/Users/USER/my_image.jpeg" \
-H "Authorization: Bearer {access_token}"
I have tried different options with no luck
Is there a simple wrapper that I can use (that support the –x and –h options)
Or even better a code sample on how to approach this issue
Many thanks in advance

I believe, that Process.Start() suites your needs.

Watson dialog cURL conversation post request not passing form data

When making a post cURL request as below to try and continue a created conversation watson instead returns a new conversation.
curl -u "USERNAME":"PASSWORD" -X POST --form conversation_id=CONVOID --form client_id=CLIENTID --form input="What type of toppings do you have?" "https://gateway.watsonplatform.net/dialog/api/v1/dialogs/DIALOGID/conversation"
If i use the below cURL it works fine.
curl -u "USERNAME":"PASSWORD" --data "conversation_id=CONVOID&client_id=CLIENTID&input=What type of toppings do you have?" https://gateway.watsonplatform.net/dialog/api/v1/dialogs/DIALOGID/conversation
My issue being that now when trying to write a c# wrapper i'm running in to the same issue that POST requests fail to transmit their form data correctly.
What's going on ?
I either need a c# MVC equivalent to the "--data" formatting. ( currently using HttpClient.PostAsync) or to figure out what is exactly wrong with using post requests to continue conversations.
As far as i can tell i am replicating the post request in c# correctly so i don't think there are two issues. ( just one post request issue, not a cURL issue then a C# implementation issue.)
For what it's worth i have left the commands in the format i submitted them, only replacing sensitive values with BLOCKCAPITALS. If it looks like i've missed a quotation mark or curly bracket , it's because i have and may be the cause of the issue.

The service expects an application/x-www-form-urlencoded POST request
To do that in curl you need to use the -d parameter:
curl -u "USERNAME":"PASSWORD" -X POST
-d conversation_id=CONVOID
-d client_id=CLIENTID
-d input="What type of toppings do you have?"
"https://gateway.watsonplatform.net/dialog/api/v1/dialogs/DIALOGID/conversation"
-d, --data
(HTTP) Sends the specified data in a POST request to the HTTP server, in the same way that a browser does when a user has filled in an HTML form and presses the submit button. This will cause curl to pass the data to the server using the content-type application/x-www-form-urlencoded. Compare to -F, --form.
Curl documentation

C# code for curl operation

curl for Twilio with out helper library
curl -X POST 'https://api.twilio.com/2010-04-01/Accounts/[sid]/Messages.xml' \
--data-urlencode 'To=+919400xxxxxx' \
--data-urlencode 'From=+1484925xxxx' \
--data-urlencode 'Body=[body]' \
-u [sid]:[AuthToken]
I wanted to Do it using C# code. ( I don't have much knowledge in C# )
I just checked these
Making a cURL call in C#
cURL with user authentication in C#
But gives invalid request.

You can start by using Nuget to download the Twilio helpers, search for Twilio.
Once you have that package installed, you can use it like this.
var client = new TwilioRestClient("accountsid", "authtoken");
var result = client.SendSmsMessage("from", "to", "body");

multipart/form-data webclient c#

I need to send a request of this type:
curl \
-H 'Authorization: OAuth AJOBibdmecfKxOpEeRWbdmVVCGujGRU3JKA0jyQM' \
-F 'lecture\[media\]=#video.avi;type=video/mpeg' \
-F 'lecture\[name\]=My lecture' \
-F 'lecture\[type\]=Media' \
http://www.redu.com.br/api/subjects/117/lectures -vv
I want to use the WebClient class in C# to make a multipart POST request for sending JSON + file to be loaded, but do not know how I can do this, can anyone help me?