How can i pass the value of 2nd page to the default page?

Question

I want to pass the value of label on my MSG.aspx.cs to Default.aspx.cs.

I'm using a session here, does anyone know any other options on how to do this??

(If my question is not clear, The program is loading the Default.aspx.cs first then on Page_Load it should call the MSG.aspx.cs then get the value of label on MSG.aspx.cs)

 

What I have tried:

Default.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
   lblName.Text = Session["name"].ToString();
}

MSG.aspx.cs

Match sndrNameMatch = Regex.Match(body, @"From: ([A-Za-z0-9\-]+)", RegexOptions.IgnoreCase);

lblName.Text = sndrNameMatch.Value;
Session["name"] = lblName.Text;