Enumerable::Max<TSource> Method (IEnumerable<TSource>, Func<TSource, Int32>)
Invokes a transform function on each element of a sequence and returns the maximum Int32 value.
Namespace: System.Linq
Assembly: System.Core (in System.Core.dll)
Type Parameters
- TSource
The type of the elements of source.
Parameters
- source
- Type: System.Collections.Generic::IEnumerable<TSource>
A sequence of values to determine the maximum value of.
- selector
- Type: System::Func<TSource, Int32>
A transform function to apply to each element.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<TSource>. When you use instance method syntax to call this method, omit the first parameter.| Exception | Condition |
|---|---|
| ArgumentNullException | source or selector is nullptr. |
| InvalidOperationException | source contains no elements. |
The Max<TSource>(IEnumerable<TSource>, Func<TSource, Int32>) method uses the Int32 implementation of IComparable<T> to compare values.
You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Int32.
In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.
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