Help in this code for replace white-space into newline?

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ASP.NET

I Use this code for detect white-space and replace in new line:

string text = "Hello World...     Fine     Thanku.";
            Regex rx = new Regex(@"\s*");
            string outstr = rx.Replace(text, "\n").Trim();
            TextBox2.Text = outstr;

output come in this type..

/***********Output***************/
H
e
l
l
o

W
o
r
l
d
.
.
.

F
i
n
e

T
h
a
n
k
u
.
/********************/

I want the output as like..
Hello World...
Fine
Thanku.