keep dataTable present through page navigating aspx.net - asp.net

Question

i have data Table which is dynamically created and is bind to grid View and the page have a button which is redirecting user on another page when is clicked. That's page one.Now when user is redirected on page 2, and if he want to get back on page 1, I want to be present data Table when page load.Some example code how to do that?
page1
protected void Page_Load(object sender, EventArgs e)
{
dtCurrentTable = (DataTable)ViewState["Markici"];
GridView2.DataSource = dtCurrentTable();
GridView2.DataBind();
}
public void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("Page2.aspx");
}
//method for insert dataTable in database
public void Button2_Click(object sender, EventArgs e)
{
dtCurrentTable = (DataTable)ViewState["Markici"];
Session["Markici"] = dtCurrentTable;
dtCurrentTable = (DataTable)Session["Markici"];
GridView2.DataSource = dtCurrentTable;
GridView2.DataBind();
SqlCommand cmd = new SqlCommand("InsertMarkica",conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "InsertMarkica";
foreach (DataRow dr in dtCurrentTable.Rows)
{
cmd.Parameters.Clear();
//SqlCommand cmd = new SqlCommand(cmdstr, conn);
cmd.Parameters.AddWithValue("#FirmaID", dr["FirmaID"]);
cmd.Parameters.AddWithValue("#Godina", dr["Godina"]);
cmd.Parameters.AddWithValue("#Kasa", dr["KasaID"]);
cmd.Parameters.AddWithValue("#Masa", dr["Masa"]);
cmd.Parameters.AddWithValue("#MarkicaID", dr["MarkicaID"]);
cmd.Parameters.AddWithValue("#Datum", dr["Datum"]);
cmd.Parameters.AddWithValue("#VrabotenID", dr["VrabotenID"]);
cmd.Parameters.AddWithValue("#Smena", dr["Smena"]);
cmd.Parameters.AddWithValue("#VkIznos", dr["VkIznos"]);
cmd.Parameters.AddWithValue("#VkDanok", dr["VkDanok"]);
cmd.ExecuteNonQuery();
cmd.Connection = conn;
}
page2
public void Button2_Click(object sender, EventArgs e)
{
Reponse.Redirect("Page1.aspx");
//Now when is redirected on page1, it should be present data Tale,
//needed that data Table for inserting records in database
}

Answer 1

You can create a session variable as follow
protected void Page_Load(object sender, EventArgs e)
{
dtCurrentTable = (DataTable)ViewState["Markici"];
Session["Markici"]=dtCurrentTable;
GridView2.DataSource = dtCurrentTable();
GridView2.DataBind();
}
Not the value of Session["Markici"] will be available in the current session on any page. You need to cast and use it as follow
dtCurrentTable = (DataTable)Session["Markici"];