C# How to disable the richtextbox auto text wrap in winforms?

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C#3.5

Hello everybody, I'm having a little but frustrating problem here. In the project I'm working on right now I programmed a WYSIWYG HTML editor with a richtextbox for the codeview and a webbrowser for the editable preview and they are both updating each other depending on which of them are changes made. So far so good. Whats frusttrating for me is that it seems that i can't by any means disable the auto textwrap of the richtextbox when I change the text like:

rTBxCode.Text = WBHTML.DocumentText;

I always get the HTML text blobbed together and it's hard to make sense of the syntax that way. is there a way to keep the format and linebreaks? I would apreciate any help.

i pass the richtextbox to the webbrowser in this way:

try
{
    string current_source = rTBxCode.Text;
    StreamWriter stream = new StreamWriter("index.html");
    stream.Write(current_source);
    stream.Close();
    string place = Directory.GetCurrentDirectory();
    string url = place + "/index.html";
    WBHTML.Refresh(WebBrowserRefreshOption.Completely);
    WBHTML.Navigate(url);
    rTBxCode.Focus();
}
catch (Exception ex)
{
    CreateLogFiles log = new CreateLogFiles();
    log.ErrorLog("C:\\", "Error HTMLEditor time2_tick funcion. " +ex.Message , "ProgrammErrorLog.txt");
}