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//------------------------------------------------------------------------------
// <copyright file="CookieParameter.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.ComponentModel;
using System.Data;
/// <devdoc>
/// Represents a Parameter that gets its value from the application's request parameters.
/// </devdoc>
[
DefaultProperty("CookieName"),
]
public class CookieParameter : Parameter {
/// <devdoc>
/// Creates an instance of the CookieParameter class.
/// </devdoc>
public CookieParameter() {
}
/// <devdoc>
/// Creates an instance of the CookieParameter class with the specified parameter name and request field.
/// </devdoc>
public CookieParameter(string name, string cookieName) : base(name) {
CookieName = cookieName;
}
/// <devdoc>
/// Creates an instance of the CookieParameter class with the specified parameter name, database type, and
/// request field.
/// </devdoc>
public CookieParameter(string name, DbType dbType, string cookieName)
: base(name, dbType) {
CookieName = cookieName;
}
/// <devdoc>
/// Creates an instance of the CookieParameter class with the specified parameter name, type, and request field.
/// </devdoc>
public CookieParameter(string name, TypeCode type, string cookieName) : base(name, type) {
CookieName = cookieName;
}
/// <devdoc>
/// Used to clone a parameter.
/// </devdoc>
protected CookieParameter(CookieParameter original) : base(original) {
CookieName = original.CookieName;
ValidateInput = original.ValidateInput;
}
/// <devdoc>
/// The name of the request parameter to get the value from.
/// </devdoc>
[
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();
}
}
}
/// <devdoc>
/// Creates a new CookieParameter that is a copy of this CookieParameter.
/// </devdoc>
protected override Parameter Clone() {
return new CookieParameter(this);
}
/// <devdoc>
/// Returns the updated value of the parameter.
/// </devdoc>
protected internal override object Evaluate(HttpContext context, Control control) {
if (context == null || context.Request == null) {
return null;
}
HttpCookieCollection cookieCollection = ValidateInput ? context.Request.Cookies : context.Request.Unvalidated.Cookies;
HttpCookie cookie = cookieCollection[CookieName];
if (cookie == null) {
return null;
}
return cookie.Value;
}
/// <summary>
/// Determines whether the parameter's value is being validated or not.
/// </summary>
[
WebCategory("Behavior"),
WebSysDescription(SR.Parameter_ValidateInput),
DefaultValue(true)
]
public bool ValidateInput {
get {
object o = ViewState["ValidateInput"];
if (o == null)
return true;
return (bool)o;
}
set {
if (ValidateInput != value) {
ViewState["ValidateInput"] = value;
OnParameterChanged();
}
}
}
}
}
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