ProfileParameter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / ProfileParameter.cs / 1 / ProfileParameter.cs
                        

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

namespace System.Web.UI.WebControls { 
 
    using System;
    using System.ComponentModel; 
    using System.Security.Permissions;


 
    /// 
    /// Represents a Parameter that gets its value from the user's profile data. 
    ///  
    [
    DefaultProperty("PropertyName"), 
    ]
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    public class ProfileParameter : Parameter { 

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

 
        /// 
        /// Creates an instance of the ProfileParameter class with the specified parameter name and profile property. 
        ///  
        public ProfileParameter(string name, string propertyName) : base(name) {
            PropertyName = propertyName; 
        }


        ///  
        /// Creates an instance of the ProfileParameter class with the specified parameter name, type, and profile property.
        ///  
        public ProfileParameter(string name, TypeCode type, string propertyName) : base(name, type) { 
            PropertyName = propertyName;
        } 


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


        /// 
        /// The name of the Profile property to get the value from. 
        /// 
        [ 
        DefaultValue(""), 
        WebCategory("Parameter"),
        WebSysDescription(SR.ProfileParameter_PropertyName), 
        ]
        public string PropertyName {
            get {
                object o = ViewState["PropertyName"]; 
                if (o == null)
                    return String.Empty; 
                return (string)o; 
            }
            set { 
                if (PropertyName != value) {
                    ViewState["PropertyName"] = value;
                    OnParameterChanged();
                } 
            }
        } 
 

        ///  
        /// Creates a new ProfileParameter that is a copy of this ProfileParameter.
        /// 
        protected override Parameter Clone() {
            return new ProfileParameter(this); 
        }
 
 
        /// 
        /// Returns the updated value of the parameter. 
        /// 
        protected override object Evaluate(HttpContext context, Control control) {
            if (context == null || context.Profile == null) {
                return null; 
            }
            return DataBinder.Eval(context.Profile, PropertyName); 
        } 
    }
}

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