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 a null reference (Nothing in Visual Basic). |
| 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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