DictionarySurrogate.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 / WF / Common / AuthoringOM / Serializer / DictionarySurrogate.cs / 1305376 / DictionarySurrogate.cs
                        

                        
                            namespace System.Workflow.ComponentModel.Serialization 
{
 	using System;
	using System.Xml;
	using System.Runtime.Serialization; 
	using System.Reflection;
 	using System.IO; 
	using System.Runtime.Serialization.Formatters.Binary; 
 	using System.Collections;
 	using System.Collections.Generic; 

	#region DictionarySurrogate
 	internal sealed class DictionarySurrogate : ISerializationSurrogate
	{ 
		void ISerializationSurrogate.GetObjectData(object obj, SerializationInfo info, StreamingContext context)
		{ 
 			if (!obj.GetType().IsGenericType || obj.GetType().GetGenericTypeDefinition() != typeof(Dictionary<,>)) 
				throw new ArgumentException(SR.GetString(SR.Error_InvalidArgumentValue), "obj");
 
 			Type[] args = obj.GetType().GetGenericArguments();
 			if (args.Length != 2)
				throw new ArgumentException(SR.GetString(SR.Error_InvalidArgumentValue), "obj");
 
 			PropertyInfo keysProperty = obj.GetType().GetProperty("Keys");
			if (keysProperty == null) 
				throw new NullReferenceException("keysProperty"); 

			ArrayList keys = new ArrayList(keysProperty.GetValue(obj, null) as ICollection); 

 			PropertyInfo valuesProperty = obj.GetType().GetProperty("Values");
			if (valuesProperty == null)
 				throw new NullReferenceException("valuesProperty"); 

 			ArrayList values = new ArrayList(valuesProperty.GetValue(obj, null) as ICollection); 
			if (keys.Count == 1) 
 			{
				info.AddValue("key", keys[0]); 
				info.AddValue("value", values[0]);
			}
 			else if (keys.Count > 1)
			{ 
 				info.AddValue("keys", keys.ToArray());
 				info.AddValue("values", values.ToArray()); 
			} 
 			info.AddValue("keyType", args[0]);
			info.AddValue("valueType", args[1]); 

			info.SetType(typeof(DictionaryRef));
		}
 		object ISerializationSurrogate.SetObjectData(object obj, SerializationInfo info, StreamingContext context, ISurrogateSelector selector) 
		{
 			return null; 
 		} 

		#region DictionaryRef 
 		[Serializable]
		private sealed class DictionaryRef : IObjectReference, IDeserializationCallback
		{
			[OptionalField] 
 			private IList keys = null;
			[OptionalField] 
 			private IList values = null; 
 			[OptionalField]
			private object key = null; 
 			[OptionalField]
			private object value = null;

			private Type keyType = null; 
			private Type valueType = null;
 
 			[NonSerialized] 
			private object dictionary = null;
 
 			Object IObjectReference.GetRealObject(StreamingContext context)
 			{
				if (this.dictionary == null)
 				{ 
					Type dictionaryType = typeof(Dictionary).GetGenericTypeDefinition().MakeGenericType(keyType, valueType);
					this.dictionary = dictionaryType.GetConstructor(Type.EmptyTypes).Invoke(null); 
				} 
 				return this.dictionary;
			} 
 			void IDeserializationCallback.OnDeserialization(Object sender)
 			{
				if (this.dictionary != null)
 				{ 
					MethodInfo addMethod = this.dictionary.GetType().GetMethod("Add");
					if (addMethod == null) 
						throw new NullReferenceException("addMethod"); 

 					object[] kvp = new object[2]; 
					if (this.keys != null)
 					{
 						for (int index = 0; index < this.keys.Count; index++)
						{ 
 							kvp[0] = this.keys[index];
							kvp[1] = this.values[index]; 
							addMethod.Invoke(this.dictionary, kvp); 
						}
 					} 
					else if (this.key != null)
 					{
 						kvp[0] = this.key;
						kvp[1] = this.value; 
 						addMethod.Invoke(this.dictionary, kvp);
					} 
				} 
				this.dictionary = null;
 			} 
		}
 		#endregion
 	}
	#endregion 

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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