ASP.NET

protected void Button1_Click(object sender, EventArgs e)
    {
        DataTable dt;
        DataRow drow;
        if (Session["datatable"] == null)
        {
            dt = new DataTable();
            
            DataColumn dcol = new DataColumn("Column1", typeof(string));
            //adding column to datatable
            dt.Columns.Add(dcol);
            int rowcount = 0;

            drow = dt.NewRow();
            dt.Rows.Add(drow);
            dt.Rows[rowcount][dcol] = TextBox1.Text;
            //add datatable to session
            Session.Add("datatable", dt);
        }
        else
        {
            dt = (DataTable)Session["datatable"];
            drow = dt.NewRow();
            dt.Rows.Add(drow);
            dt.Rows[dt.Rows.Count-1]["Column1"] = TextBox1.Text;

            //add datatable to session
            Session.Add("datatable", dt);
        }
            //bind gridview
            GridView1.DataSource = dt;
            GridView1.DataBind();
        
    }

System.Resources.ResourceWriter rw = new System.Resources.ResourceWriter("English.resources");
            rw.AddResource("ResourceKey", "Value");
            rw.Generate();
            rw.Close();

<location path="Images">
 <system.web>
  <authorization>
   <allow users="*"/>
  </authorization>
 </system.web>
</location>

<location path="css">
 <system.web>
  <authorization>
   <allow users="*"/>
  </authorization>
 </system.web>
</location>

<location path="resources/images">

if (Session["userid"] != null)
       {
           //rediect to desired page
       }
       else
       {
           //rediect to custom page
       }

Request.ServerVariables("REMOTE_ADDR")