.NET Framework

Using Cookie in ASP.NET

Y2K 2009. 1. 7. 13:07

A cookie is stored on the client's machine by their web browser software. To set a cookie, we include information in an HttpResponse that instructs the browser to save a cookie on the client's system. Here's the basic code for writing a Cookie in ASP.NET 

Using System.Web;



Response.Cookies["BackgroundColor"].Value = "Red";



And to read the cookie back : 

Response.Write

(Request.Cookies["BackgroundColor"].Value);



Note that for security reasons you can only read a cookie that was set within the same domain name. 

Sometimes you may need a collection of stored items, such as user address details. In this case you could read in a cookie collection like this: 

HttpCookieCollection cookies = Request.Cookies;

for(int n=0;n<cookies.Count;n++)

{

    HttpCookie cookie = cookies[n];

    Response.Write("<hr/>Name: <b>" + cookie.Name + "</b><br />");

    Response.Write("Expiry: " + cookie.Expires + "<br />");

    Response.Write("Address1: " + cookie.Address1+ "<br />");

    Response.Write("Address2: " + cookie.Address2+ "<br />");

    Response.Write("City: " + cookie.City+ "<br />");

    Response.Write("Zip: " + cookie.Zip+ "<br />");

}