trying to add rows to gridview

Question

This is my first attempt at a web app.  I am writing this in VB.net.  I have a standard windows application that is doing the same thing as my web app. 

On my windows app, I have data loading into a datagridview using the following code:
DataGridView1.Rows.Add(irowMain.Item("bg_bug_id"), newts.ToString & " hours (" & newts1.ToString & " days)")

It seems there is no option for a "datagridview" in this web environment so I figured using a "gridview" would be identical BUT....I cannot seem to find an option to add rows to the gridview.

I am needing the gridview to load rows from my dataset based upon a For Loop I am using.  Does anyone have a suggestion regarding this?  Thanks.