I have this html file. I want to create a text file through c# and save this value on it.
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body>
<form onsubmit="" action="">
<label>Username</label>
<input id="username" type="text" />
<input id="submitBtn" type="submit" value="Confirm" />
</form>
</body>
</html>