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ConcurrentDictionary<TKey, TValue>.IDictionary.Add Method

.NET Framework 4

Other Versions

.NET Framework 4.5

Adds the specified key and value to the dictionary.

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

Syntax

C++

Copy

void IDictionary.Add(
	Object key,
	Object value
)

Parameters

key: Type: System.Object
The object to use as the key.

value: Type: System.Object
The object to use as the value.

Implements

IDictionary.Add(Object, Object)

Exceptions

Exception	Condition
ArgumentNullException	key is a null reference (Nothing in Visual Basic).
ArgumentException	key is of a type that is not assignable to the key type of the Dictionary<TKey, TValue>. -or- value is of a type that is not assignable to , the type of values in the Dictionary<TKey, TValue>. -or- A value with the same key already exists in the Dictionary<TKey, TValue>.
OverflowException	The dictionary already contains the maximum number of elements, MaxValue.

Exception

Condition

ArgumentNullException

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

ArgumentException

key is of a type that is not assignable to the key type of the Dictionary<TKey, TValue>. -or- value is of a type that is not assignable to , the type of values in the Dictionary<TKey, TValue>.

-or- A value with the same key already exists in the Dictionary<TKey, TValue>.

OverflowException

The dictionary already contains the maximum number of elements, MaxValue.

Version Information

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

Reference

ConcurrentDictionary<TKey, TValue> Class

System.Collections.Concurrent Namespace

Other Resources

Thread-Safe Collections

How to: Add and Remove Items from a ConcurrentDictionary

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