Pass data from gridview to new page without using querystring

[dakota64]

Greetings all, I have a gridview that I need to pass the primary key
from a selected row to a new page. I have it working with a
querystring, but I would like to do it without using the querystring.

<asp:HyperLinkF ield Text="Edit" DataNavigateUrl Fields="Pkey"
DataNavigateUrl FormatString="M ultilineEdit.as px?Pkey={0}" />

I have been trying to use session and context, but I have not been
able to get anything to work. The code below is what I have. Thank
you in advance for your help..

Protected Sub GridView1_Selec tedIndexChanged (ByVal sender As
Object, ByVal e As System.EventArg s) Handles
GridView1.Selec tedIndexChanged
Dim strString As String
strString = GridView1.Selec tedRow.Cells.It em(0).Text.ToSt ring

Session.Item("M yPkey") = strString
Response.Redire ct("MultilineEd it.aspx")

'Context.Items. Add("MyPkey", strString)
'Server.Transfe r("MultilineEdi t.aspx")
End Sub