PropertyIdentifier.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 / cdf / src / NetFx40 / Tools / System.Activities.Presentation / System / Activities / Presentation / Base / Extensibility / Model / PropertyIdentifier.cs / 1305376 / PropertyIdentifier.cs
                        

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

namespace System.Activities.Presentation.Model { 
 
    using System;
    using System.Windows; 
    using System.Runtime;
    using System.Activities.Presentation;
    using System.Diagnostics.CodeAnalysis;
 
    /// 
    /// A PropertyIdentifier is an object that represents a property.  Properties 
    /// can be identified by name or by dependency property.  Where possible, 
    /// you should use dependency properties as they provide higher fidelity.
    ///  
    [SuppressMessage(FxCop.Category.Performance, FxCop.Rule.AvoidUninstantiatedInternalClasses, Justification = "False posistive, used as generic parameter.")]
    [Fx.Tag.XamlVisible(false)]
    class PropertyIdentifier
    { 

        private string _name; 
        private DependencyProperty _property; 

        ///  
        /// Creates a new PropertyIdentifier.
        /// 
        public PropertyIdentifier(string name) {
            if (name == null) throw FxTrace.Exception.ArgumentNull("name"); 
            _name = name;
        } 
 
        /// 
        /// Creates a new PropertyIdentifier. 
        /// 
        public PropertyIdentifier(DependencyProperty property) {
            if (property == null) throw FxTrace.Exception.ArgumentNull("property");
            _property = property; 
            _name = _property.Name;
        } 
 
        /// 
        /// The property name.  This will either be the supplied name or the 
        /// name of the dependency property.  It will never be null.
        /// 
        public string Name {
            get { return _name; } 
        }
 
        ///  
        /// The dependency property this identifier represents.  This
        /// can be null if the property identifier was not initialized 
        /// with a dependency property.
        /// 
        public DependencyProperty DependencyProperty {
            get { return _property; } 
        }
 
        ///  
        /// Overrride of GetHashCode.
        ///  
        public override int GetHashCode() {
            return _name.GetHashCode();
        }
 
        /// 
        /// Override of Equals to properly implement object equality for 
        /// PropertyIdentifier. 
        /// 
        public override bool Equals(object obj) { 
            PropertyIdentifier other = obj as PropertyIdentifier;
            if (other == null) return false;

            if (_property != null && _property == other._property) return true; 
            if (_name.Equals(other._name, StringComparison.Ordinal)) return true;
 
            return false; 
        }
    } 
}

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

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