Enumerable::Average Method (IEnumerable<Nullable<Double>>^)
Computes the average of a sequence of nullable Double values.
Assembly: System.Core (in System.Core.dll)
public: [ExtensionAttribute] static Nullable<double> Average( IEnumerable<Nullable<double>>^ source )
Parameters
- source
-
Type:
System.Collections.Generic::IEnumerable<Nullable<Double>>^
A sequence of nullable Double values to calculate the average of.
Return Value
Type: System::Nullable<Double>The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.
| Exception | Condition |
|---|---|
| ArgumentNullException | source is null. |
The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>^) to calculate an average.
Note |
|---|
This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type. |
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
