You can pass data from one page to another page through following way
1- Response.Redirect
SET: Response.Redirect("Defaultaspx?name=Tripat");
GET: string Name = Request.QueryString["name"];
2-Cookies
SET : HttpCookie cookName = new HttpCookie("Name");
cookName.Value = "Tripat";
GET :string name = Request.Cookies["Name"].Value;
3- Application Variables
SET : Application["Name"] = "Tripat";
GET :string name = Application["Name"].ToString();