Computes the average of a sequence of nullable float values.
Syntax
Parameters
- source
Returns
The average of the sequence of values, or null if the source sequence is empty or contains only null values.
Remarks
The Queryable.Average(IQueryable<Nullable<float>>) method generates a System.Linq.Expressions.MethodCallExpression that represents calling Queryable.Average(IQueryable<Nullable<float>>) itself. It then passes the System.Linq.Expressions.MethodCallExpression to the IQueryProvider.Execute``1(System.Linq.Expressions.Expression) method of the System.Linq.IQueryProvider represented by the IQueryable.Provider property of the source parameter.
The query behavior that occurs as a result of executing an expression tree that represents calling Queryable.Average(IQueryable<Nullable<float>>) depends on the implementation of the type of the source parameter. The expected behavior is that it calculates the average of the values in source.
Requirements
Assembly: System.Core (in System.Core.dll)
Assembly Versions: 3.5.0.0, 4.0.0.0