ComponentResourceKey.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / ComponentResourceKey.cs / 1305600 / ComponentResourceKey.cs
                        
                        
                            using System; 
using System.Reflection;
using System.Text;
using System.ComponentModel;
 
namespace System.Windows
{ 
    ///  
    ///     Key class for custom components to define the names of their resources to be loaded by SystemResources.
    ///  
    [TypeConverter(typeof(System.Windows.Markup.ComponentResourceKeyConverter))]
    public class ComponentResourceKey : ResourceKey
    {
        ///  
        ///     Default constructor. Type and ID are null.
        ///  
        public ComponentResourceKey() 
        {
        } 

        /// 
        ///     Type and ID are initialized to the specified parameters.
        ///  
        /// The Type to which this key is associated.
        /// A unique ID to differentiate this key from others associated with this type. 
        public ComponentResourceKey(Type typeInTargetAssembly, object resourceId) 
        {
            if (typeInTargetAssembly == null) 
            {
                throw new ArgumentNullException("typeInTargetAssembly");
            }
            if (resourceId == null) 
            {
                throw new ArgumentNullException("resourceId"); 
            } 

            _typeInTargetAssembly = typeInTargetAssembly; 
            _typeInTargetAssemblyInitialized = true;

            _resourceId = resourceId;
            _resourceIdInitialized = true; 
        }
 
        ///  
        ///     The Type associated with this resources. Must be in assembly where the resource is located.
        ///  
        public Type TypeInTargetAssembly
        {
            get
            { 
                return _typeInTargetAssembly;
            } 
 
            set
            { 
                if (value == null)
                {
                    throw new ArgumentNullException("value");
                } 
                if (_typeInTargetAssemblyInitialized)
                { 
                    throw new InvalidOperationException(SR.Get(SRID.ChangingTypeNotAllowed)); 
                }
                _typeInTargetAssembly = value; 
                _typeInTargetAssemblyInitialized = true;
            }
        }
 
        /// 
        ///     Used to determine where to look for the resource dictionary that holds this resource. 
        ///  
        public override Assembly Assembly
        { 
            get
            {
                return (_typeInTargetAssembly != null) ? _typeInTargetAssembly.Assembly : null;
            } 
        }
 
        ///  
        ///     A unique Id to differentiate this key from other keys associated with the same type.
        ///  
        public object ResourceId
        {
            get
            { 
                return _resourceId;
            } 
 
            set
            { 
                if (_resourceIdInitialized)
                {
                    throw new InvalidOperationException(SR.Get(SRID.ChangingIdNotAllowed));
                } 
                _resourceId = value;
                _resourceIdInitialized = true; 
            } 
        }
 
        /// 
        ///     Determines if the passed in object is equal to this object.
        ///     Two keys will be equal if they both have equal Types and IDs.
        ///  
        /// The object to compare with.
        /// True if the objects are equal. False otherwise. 
        public override bool Equals(object o) 
        {
            ComponentResourceKey key = o as ComponentResourceKey; 

            if (key != null)
            {
                return ((key._typeInTargetAssembly != null) ? key._typeInTargetAssembly.Equals(this._typeInTargetAssembly) : (this._typeInTargetAssembly == null)) && 
                    ((key._resourceId != null) ? key._resourceId.Equals(this._resourceId) : (this._resourceId == null));
            } 
 
            return false;
        } 

        /// 
        ///     Serves as a hash function for a particular type.
        ///  
        public override int GetHashCode()
        { 
            return ((_typeInTargetAssembly != null) ? _typeInTargetAssembly.GetHashCode() : 0) ^ ((_resourceId != null) ? _resourceId.GetHashCode() : 0); 
        }
 
        /// 
        ///     return string representation of this key
        /// 
        /// the string representation of the key 
        public override string ToString()
        { 
            StringBuilder strBuilder = new StringBuilder(256); 
            strBuilder.Append("TargetType=");
            strBuilder.Append((_typeInTargetAssembly != null) ? _typeInTargetAssembly.FullName : "null"); 
            strBuilder.Append(" ID=");
            strBuilder.Append((_resourceId != null) ? _resourceId.ToString() : "null");
            return strBuilder.ToString();
        } 

        private Type _typeInTargetAssembly; 
        private bool _typeInTargetAssemblyInitialized; 

        private object _resourceId; 
        private bool _resourceIdInitialized;
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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ComponentResourceKey.cs source code in C# .NET

Source code for the .NET framework in C#

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