Sqldatasource Data In Code Behind

I have a sqldatasource in the markup. This is in turn connected to a Gridview. I use Eval to retrieve the database information in the markup but I also need the Eval information in code behind.  How can I do this?

I got this far but how (if it's possible this way) can I retrive it?

Protected Sub Test(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound

If (e.Row.RowType = DataControlRowType.DataRow) Then

this is where i want to get the "MyData" value from the database.

End If

........

 

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"

DataKeyNames="test" DataSourceID="SqlDataSource1" UseAccessibleHeader="False" GridLines="None" ShowHeader="False">

<Columns>

<asp:TemplateField>

<ItemTemplate>   





<asp:HiddenField ID="Hiddenvalue" runat=server Value='<%# Eval("MyData") %>' />

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

 

using VB..