display line breaks asp.net mvc razor

There's an even better/awesome solution that employs CSS white-space property:

Using this you avoid Cross-site scripting (XSS) vulnerabilities...

<p style="white-space: pre-line">@Model.Message</p>

Works like a charm with ASP.NET MVC Razor engine.

Your code is vulnerable to XSS attacks as it doesn't HTML encode the text. I would recommend you the following:

var result = string.Join(
    "<br/>",
    Model.Post.Description
        .Split(new[] { Environment.NewLine }, StringSplitOptions.None)
        .Select(x => HttpUtility.HtmlEncode(x))
);
return MvcHtmlString.Create(result);

and then in your view you can safely:

@Html.SomeHelper()