加 <br> 或Textarea文字中的段落

Question

I am using textbox for allowing user to enter any text they want, then I am emailing this text. I want to add paragraphs or
in textarea text for eg if user enters this

this is test this is test this is test this is test this is test this is test
this is test this is test this is test this is test this is test

Then the email wil appear with whole text in one line, I want it to appear like two or three paragraphs something like this

<p> this is test this is test this is test </p>
<p> this is test this is test this is test </p>

How I can do this in C#

Answer 1

In textarea \\n added on pressing of Enter key. replace \\n with <br/> on server side.