VS 2005 Split String Into An Array

Dim objStreamReader As New StreamReader(Server.MapPath(".eof_uploads") & tfile)
Dim arrText As New ArrayList
Do While objStreamReader.Peek() >= 0

[Code]....

I have a string from a text document that would be formatted for example: "this, is, an, example" and i would like to add this to a gridview on my aspx page.

The above populates the gridview like this:
|this |
|is |
|an |
|example|

how can i get it to add a new colum instead of a new line? For Example:

|this |is |an |example|