Click or drag to resize

MongoQueryable.AverageAsync<TSource> Method (IMongoQueryable<TSource>, Expression<Func<TSource, Nullable<Single>>>, CancellationToken)

Computes the average of the sequence of Nullable<T> values that is obtained by invoking a projection function on each element of the input sequence.

Namespace:  MongoDB.Driver.Linq
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.19.1+3a2a09dd959482f665ffbb5df2557ec541597af4
Syntax
public static Task<float?> AverageAsync<TSource>(
	this IMongoQueryable<TSource> source,
	Expression<Func<TSource, float?>> selector,
	CancellationToken cancellationToken = default
)

Parameters

source
Type: MongoDB.Driver.Linq.IMongoQueryable<TSource>
A sequence of values.
selector
Type: System.Linq.Expressions.Expression<Func<TSource, Nullable<Single>>>
A projection function to apply to each element.
cancellationToken (Optional)
Type: System.Threading.CancellationToken
The cancellation token.

Type Parameters

TSource
The type of the elements of source.

Return Value

Type: Task<Nullable<Single>>
The average of the projected values.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IMongoQueryable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also