CookieParameter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / CookieParameter.cs / 1305376 / CookieParameter.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls { 
 
    using System;
    using System.ComponentModel; 
    using System.Data;


 
    /// 
    /// Represents a Parameter that gets its value from the application's request parameters. 
    ///  
    [
    DefaultProperty("CookieName"), 
    ]
    public class CookieParameter : Parameter {

 
        /// 
        /// Creates an instance of the CookieParameter class. 
        ///  
        public CookieParameter() {
        } 


        /// 
        /// Creates an instance of the CookieParameter class with the specified parameter name and request field. 
        /// 
        public CookieParameter(string name, string cookieName) : base(name) { 
            CookieName = cookieName; 
        }
 

        /// 
        /// Creates an instance of the CookieParameter class with the specified parameter name, database type, and
        /// request field. 
        /// 
        public CookieParameter(string name, DbType dbType, string cookieName) 
            : base(name, dbType) { 
            CookieName = cookieName;
        } 


        /// 
        /// Creates an instance of the CookieParameter class with the specified parameter name, type, and request field. 
        /// 
        public CookieParameter(string name, TypeCode type, string cookieName) : base(name, type) { 
            CookieName = cookieName; 
        }
 

        /// 
        /// Used to clone a parameter.
        ///  
        protected CookieParameter(CookieParameter original) : base(original) {
            CookieName = original.CookieName; 
        } 

 

        /// 
        /// The name of the request parameter to get the value from.
        ///  
        [
        DefaultValue(""), 
        WebCategory("Parameter"), 
        WebSysDescription(SR.CookieParameter_CookieName),
        ] 
        public string CookieName {
            get {
                object o = ViewState["CookieName"];
                if (o == null) 
                    return String.Empty;
                return (string)o; 
            } 
            set {
                if (CookieName != value) { 
                    ViewState["CookieName"] = value;
                    OnParameterChanged();
                }
            } 
        }
 
 
        /// 
        /// Creates a new CookieParameter that is a copy of this CookieParameter. 
        /// 
        protected override Parameter Clone() {
            return new CookieParameter(this);
        } 

 
        ///  
        /// Returns the updated value of the parameter.
        ///  
        protected internal override object Evaluate(HttpContext context, Control control) {
            if (context == null || context.Request == null) {
                return null;
            } 
            HttpCookie cookie = context.Request.Cookies[CookieName];
            if (cookie == null) { 
                return null; 
            }
            return cookie.Value; 
        }
    }
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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