//ASP.NET

//读
Request.Cookies("test").value;

//写
var cookie : HttpCookie = new HttpCookie("test");

cookie .value =  "abc";
Response.Cookies.Add(cookie );    

//ASP

//读
Request.Cookies("test");

//写
Response.Cookies("test") = "abc";
       
//若COOKIE为ASP创建，则在.NET中需用下列方法解码，否则会有乱码问题

System.Web.HttpUtility.UrlDecode(c, System.Text.Encoding.Default);