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Hashtable Constructor (SerializationInfo, StreamingContext)

Initializes a new, empty instance of the Hashtable class that is serializable using the specified SerializationInfo and StreamingContext objects.

Namespace:  System.Collections
Assembly:  mscorlib (in mscorlib.dll)

new : 
        info:SerializationInfo * 
        context:StreamingContext -> Hashtable

Parameters

info
Type: System.Runtime.Serialization.SerializationInfo

A SerializationInfo object containing the information required to serialize the Hashtable object.

context
Type: System.Runtime.Serialization.StreamingContext

A StreamingContext object containing the source and destination of the serialized stream associated with the Hashtable.

ExceptionCondition
ArgumentNullException

info is a null reference (Nothing in Visual Basic).

A hash table's capacity is used to calculate the optimal number of hash table buckets based on the load factor. Capacity is automatically increased as required.

The load factor is the maximum ratio of elements to buckets. A smaller load factor means faster lookup at the cost of increased memory consumption.

When the actual load factor reaches the specified load factor, the number of buckets is automatically increased to the smallest prime number that is larger than twice the current number of buckets.

The hash code provider dispenses hash codes for keys in the Hashtable object. The default hash code provider is the key's implementation of Object.GetHashCode.

The comparer determines whether two keys are equal. Every key in a Hashtable must be unique. The default comparer is the key's implementation of Object.Equals.

This constructor is an O(n) operation, where n is Count.

Because serializing and deserializing an enumerator for a Hashtable can cause the elements to become reordered, it is not possible to continue enumeration without calling the Reset method.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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