Equivalent PHP code in C#

Question

I know that $_POST['m_orderid'] in C# the equivalent will be Request.Form["m_orderid"]. What means in C#:

$_POST['m_orderid'].'|success'; 

Answer 1

Looks like you want to concatenate Request.Form["m_orderid"] with this string: |success, so the equivalent syntax in C# would be:

Request.Form["m_orderid"] + "|success";