ASP.NET Cookies Extensions Methods

Tonight a simple way to manage Cookies on an ASP.NET Application with Strongly Typed Objects.

These Extensions might be improved but it's a beginning.

Here is the code

public static class CookieExtensions
{
  public static void AddToCokie(this HttpCookie cok, String name, T val)
      where T : struct
  {
      if (cok == null)
          return;
      if (!String.IsNullOrEmpty(cok.Values[name]))
          cok.Values.Remove(name);
      cok.Values.Add(name, val.ToString());
      HttpContext.Current.Response.Cookies.Add(cok);
  }
  public static T GetCookieValue(this HttpCookie cok, String name)
      where T : struct
  {
      if (cok == null)
          return default(T);
      if (String.IsNullOrEmpty(cok[name]))
          return default(T);

      return cok[name].ConvertTo();
  }
  public static T ConvertTo(this String input) where T : struct
  {
      T ret = default(T);

      if (!string.IsNullOrEmpty(input))
      {
          ret = (T)Convert.ChangeType(input, typeof(T));
      }

      return ret;
  }
}

And here is a sample of usage

public partial class _Default : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
      if (!IsPostBack)
      {
          Int32 orderId = Request.Cookies["MyCookie"].GetCookieValue("OrderId");
          Response.Write(orderId.ToString());
      }
  }

  protected void Button1_Click(object sender, EventArgs e)
  {
      Request.Cookies["MyCookie"].AddToCokie("OrderId", Int32.Parse(this.TextBox1.Text));
  }
}
Source : http://blog.sb2.fr/post/2008/11/29/ASPNET-Cookies-Extensions-Methods.aspx