Hashtable.GetHash(Object) Hashtable.GetHash(Object) Hashtable.GetHash(Object) Hashtable.GetHash(Object) Method

Definition

Namespace:: System.Collections System.Collections System.Collections System.Collections

Assemblies:: System.Collections.NonGeneric.dll, mscorlib.dll, netstandard.dll, System.Runtime.Extensions.dll

Returns the hash code for the specified key.

protected:
 virtual int GetHash(System::Object ^ key);

protected virtual int GetHash (object key);

abstract member GetHash : obj -> int
override this.GetHash : obj -> int

Protected Overridable Function GetHash (key As Object) As Integer

Parameters

key: Object Object Object Object

The Object for which a hash code is to be returned.

Returns

Int32 Int32 Int32 Int32

The hash code for key.

Exceptions

NullReferenceException NullReferenceException NullReferenceException NullReferenceException

key is null.

Remarks

If the hash table was created with a specific IHashCodeProvider implementation, this method uses that hash code provider; otherwise, it uses the Object.GetHashCode implementation of key.

This method is an O(1) operation.