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ConcurrentDictionary<TKey, TValue> Constructor (IEnumerable<KeyValuePair<TKey, TValue>>^)
.NET Framework (current version)
Initializes a new instance of the ConcurrentDictionary<TKey, TValue> class that contains elements copied from the specified IEnumerable<T>, has the default concurrency level, has the default initial capacity, and uses the default comparer for the key type.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- collection
-
Type:
System.Collections.Generic::IEnumerable<KeyValuePair<TKey, TValue>>^
The IEnumerable<T> whose elements are copied to the new ConcurrentDictionary<TKey, TValue>.
| Exception | Condition |
|---|---|
| ArgumentNullException | collection or any of its keys is null. |
| ArgumentException | collection contains one or more duplicate keys. |
Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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