<t>To split on a string you need to use the overload that takes an array of strings:<br/>
<br/>
string[] lines = theText.Split(<br/>
new string[] { Environment.NewLine },<br/>
StringSplitOptions.None<br/>
);<br/>
<br/>
```<br/>
<br/>
Edit:<br/>
<br/>
If you want to handle different types of line breaks in a text, you can use the ability to match more than one string. This will correctly split on either type of line break, and preserve empty lines and spacing in the text:<br/>
<br/>
```<br/>
string[] lines = theText.Split(<br/>
new string[] { "\r\n", "\r", "\n" },<br/>
StringSplitOptions.None<br/>
);<br/>
<br/>
```</t>
