Assuming you are trying to do this in some code-behind somewhere then there is a function to select a particular row...
is an Integer.
If you want to get at a particular column after that then you can use the
aLabel.Text = GridView1.SelectedRow.Cells(y).Text
is some other Integer
If you have selected a particular cell with your mouse or keyboard then the event fired will provide a parameter
of an appropriate type. It will have properties that will enable you to determine which row was selected / affected.
For example if
e As System.Web.UI.WebControls.GridViewRowEventArgs
is the parameter then
will return the 3rd column of the row being affected. Sometimes the property you want will be "AffectedRows" - use the intellisense to work out which one you need in each instance.
This codeproject article should also prove useful to you CodeProject Frequently Asked Questions Series 1: The ASP.NET GridView