<p>When I add the textBox.TextChanged to watch list I get a message saying <pre>The event 'System.Windows.Forms.Control.TextChanged'
can only appear on the left hand side of += or -=</pre></p>

<p>Is there any way to check what event's are called on text change?</p>

We use Subversion for document management at work. It works great.
Don't worry about the disk space. Revisions are stored compressed anyway.
Checking out a project with documentation doesn't take much more time than one without. Unless your documents are absolutely huge, this shouldn't be a problem.
Training time is a consideration. Fortunately, TortoiseSVN makes this easy.
To manage Word documents so they can only be edited by one person at a time, use the
```
svn:needs-lock
```
property. This will make the files appear as read-only on a normal checkout, and read-write when a developer has locked them for editing. After commit, the file will be unlocked and read-only again.
An additional benefit of TortoiseSVN is that it can do diffs of Word documents and present the differences in Word itself. This alone is a killer feature for me.