datatable.md

default.aspx
<asp:Label ID="Label1" runat="server" Text="P_ID"></asp:Label> <asp:TextBox ID="txtid" runat="server"></asp:TextBox>
<asp:Label ID="Label2" runat="server" Text="P_Name"></asp:Label> <asp:TextBox ID="txtname" runat="server"></asp:TextBox>
<asp:Label ID="Label3" runat="server" Text="p_Company"></asp:Label> <asp:TextBox ID="txtcompany" runat="server"></asp:TextBox>
<asp:Label ID="Label4" runat="server" Text="p_Cost"></asp:Label> <asp:TextBox ID="txtcost" runat="server"></asp:TextBox>
<asp:Label ID="Label5" runat="server" Text="p_Solddate"></asp:Label> <asp:TextBox ID="txtdate" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Add" OnClick="Button1_Click" /> <asp:Button ID="Button2" runat="server" Text="view" OnClick="Button2_Click" />
<asp:GridView ID="grdproducts" runat="server"></asp:GridView> ......... default.aspx.cs protected void Page_Load(object sender, EventArgs e) { Response.Write(Session.SessionID); }

protected void Button1_Click(object sender, EventArgs e)
{
    DataTable dt = Session["tblproduct"] as DataTable;
    DataRow dr = dt.NewRow();
    dr[0] = int.Parse(txtid.Text);
    dr[1] = txtname.Text;
    dr[2] = double.Parse(txtcost.Text);
    dr[3] = txtcompany.Text;
    dr[4] = DateTime.Parse( txtdate.Text);
   string result= Mytable.AddRow(dt, dr);
    Response.Write(result);

}

protected void Button2_Click(object sender, EventArgs e)
{
    DataTable dt = Session["tblproduct"] as DataTable;
    grdproducts.DataSource = dt;
    grdproducts.DataBind();      

}

........... Mytable.cs public class Mytable { public static DataTable Createtable() { DataTable dt = new DataTable(); dt.Columns.Add("PID", typeof(Int32)); dt.Columns.Add("PNAME", typeof(string)); dt.Columns.Add("PCOMPANY", typeof(string)); dt.Columns.Add("PCOST", typeof(double)); dt.Columns.Add("PSOLDDATE", typeof(DateTime)); return dt; } public static string AddRow(DataTable dt, DataRow dr) { dt.Rows.Add(dr);

    return "Rows Added successfully,Total rows now: "+dt.Rows.Count;
}

} ............ global.asax void Session_Start(object sender, EventArgs e) { // Code that runs when a new session is started Session["tblproduct"] = Mytable.Createtable(); }