ReadOnlyDictionary<TKey,TValue>.ICollection<KeyValuePair<TKey,TValue>>.Add Method

Definition

Throws a NotSupportedException exception in all cases.

C#
void ICollection<KeyValuePair<TKey,TValue>>.Add(System.Collections.Generic.KeyValuePair<TKey,TValue> item);

Parameters

item
KeyValuePair<TKey,TValue>

The object to add to the dictionary.

Implements

Exceptions

In all cases.

Applies to

Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP 10.0