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MultiValueDictionary<TKey, TValue> Class

Extension to the normal Dictionary. This class can store more than one value for every key. It keeps a HashSet for every Key value. Calling Add with the same Key and multiple values will store each value under the same Key in the Dictionary. Obtaining the values for a Key will return the HashSet with the Values of the Key. It can also merge with other instances of MultiValueDictionary, as long as the TKey and TValue types are equal.
Inheritance Hierarchy
System.Object
  System.Collections.Generic.Dictionary<TKey, HashSet<TValue>>
    SD.Tools.Algorithmia.GeneralDataStructures.MultiValueDictionary<TKey, TValue>

Namespace:  SD.Tools.Algorithmia.GeneralDataStructures
Assembly:  SD.Tools.Algorithmia (in SD.Tools.Algorithmia.dll) Version: 1.4.0.0 (1.4.19.0711)
Syntax
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[SerializableAttribute]
public class MultiValueDictionary<TKey, TValue> : Dictionary<TKey, HashSet<TValue>>

Type Parameters

TKey
The type of the key.
TValue
The type of the value.

The MultiValueDictionary<TKey, TValue> type exposes the following members.

Constructors
  NameDescription
Public methodMultiValueDictionary<TKey, TValue>()
Initializes a new instance of the MultiValueDictionary<TKey, TValue> class.
Public methodMultiValueDictionary<TKey, TValue>(IEqualityComparer<TValue>)
Initializes a new instance of the MultiValueDictionary<TKey, TValue> class.
Protected methodMultiValueDictionary<TKey, TValue>(SerializationInfo, StreamingContext)
Initializes a new instance of the MultiValueDictionary<TKey, TValue> class.
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Properties
  NameDescription
Public propertyComparer
Gets the IEqualityComparer<T> that is used to determine equality of keys for the dictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public propertyCount
Gets the number of key/value pairs contained in the Dictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public propertyItem
Gets or sets the value associated with the specified key.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public propertyKeys
Gets a collection containing the keys in the Dictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public propertyValues
Gets a collection containing the values in the Dictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
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Methods
  NameDescription
Public methodAdd(TKey, TValue)
Adds the specified key and value to the dictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodAdd(TKey, TValue)
Adds the specified value under the specified key
Public methodAddRange
Adds the range of values under the key specified.
Public methodClear
Removes all keys and values from the Dictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodClone
Clones this instance using shallow copy
Public methodContainsKey
Determines whether the Dictionary<TKey, TValue> contains the specified key.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodContainsValue(TValue)
Determines whether the Dictionary<TKey, TValue> contains a specific value.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodContainsValue(TKey, TValue)
Determines whether this dictionary contains the specified value for the specified key
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetEnumerator
Returns an enumerator that iterates through the Dictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetObjectData
Gets the object data.
(Overrides Dictionary<TKey, TValue>.GetObjectData(SerializationInfo, StreamingContext).)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodGetValues
Gets the values for the key specified. This method is useful if you want to avoid an exception for key value retrieval and you can't use TryGetValue (e.g. in lambdas)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodMerge
Merges the specified multivaluedictionary into this instance.
Public methodOnDeserialization
Implements the ISerializable interface and raises the deserialization event when the deserialization is complete.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodRemove(TKey)
Removes the value with the specified key from the Dictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Public methodRemove(TKey, TValue)
Removes the specified value for the specified key. It will leave the key in the dictionary.
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodTryGetValue
Gets the value associated with the specified key.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implementationPrivate methodICollection<KeyValuePair<TKey, TValue>>.Add
Adds the specified value to the ICollection<T> with the specified key.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodIDictionary.Add
Adds the specified key and value to the dictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodICollection<KeyValuePair<TKey, TValue>>.Contains
Determines whether the ICollection<T> contains a specific key and value.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodIDictionary.Contains
Determines whether the IDictionary contains an element with the specified key.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodICollection<KeyValuePair<TKey, TValue>>.CopyTo
Copies the elements of the ICollection<T> to an array of type KeyValuePair<TKey, TValue>, starting at the specified array index.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodICollection.CopyTo
Copies the elements of the ICollection<T> to an array, starting at the specified array index.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodIEnumerable<KeyValuePair<TKey, TValue>>.GetEnumerator
Returns an enumerator that iterates through the collection.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodIEnumerable.GetEnumerator
Returns an enumerator that iterates through the collection.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodIDictionary.GetEnumerator
Returns an IDictionaryEnumerator for the IDictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary.IsFixedSize
Gets a value indicating whether the IDictionary has a fixed size.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyICollection<KeyValuePair<TKey, TValue>>.IsReadOnly
Gets a value indicating whether the dictionary is read-only.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary.IsReadOnly
Gets a value indicating whether the IDictionary is read-only.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyICollection.IsSynchronized
Gets a value indicating whether access to the ICollection is synchronized (thread safe).
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary.Item
Gets or sets the value with the specified key.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary<TKey, TValue>.Keys
Gets an ICollection<T> containing the keys of the IDictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIReadOnlyDictionary<TKey, TValue>.Keys
Gets a collection containing the keys of the IReadOnlyDictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary.Keys
Gets an ICollection containing the keys of the IDictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodICollection<KeyValuePair<TKey, TValue>>.Remove
Removes a key and value from the dictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate methodIDictionary.Remove
Removes the element with the specified key from the IDictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyICollection.SyncRoot
Gets an object that can be used to synchronize access to the ICollection.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary<TKey, TValue>.Values
Gets an ICollection<T> containing the values in the IDictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIReadOnlyDictionary<TKey, TValue>.Values
Gets a collection containing the values of the IReadOnlyDictionary<TKey, TValue>.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
Explicit interface implementationPrivate propertyIDictionary.Values
Gets an ICollection containing the values in the IDictionary.
(Inherited from Dictionary<TKey, HashSet<TValue>>.)
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See Also