Creating Session Values from Gridview?

[seidel1]

I have a gridview that has a hidden column called clientID. The gridview itself has a DataKeyName called Prop_ID.

When a user selects a row from the gridview, I store the selected rows key value in a session variable as follows

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.SelectedIndexChanged
Session("PropertyID") = GridView1.SelectedValue

Response.Redirect("~/PagesEDC/aaa.aspx")
End Sub

Q - How do I also store the value of the hidden column in a session variable?

Thanks in advance

Jim