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Fluent Assertions Documentation
[Root] / FluentAssertions Assembly / FluentAssertions.Collections Namespace / GenericCollectionAssertions<TCollection,T,TAssertions> Class / NotBeEqualTo Method
An IEnumerable with the elements that are not expected.
A formatted phrase as is supported by System.String.Format(System.String,System.Object[]) explaining why the assertion is needed. If the phrase does not start with the word because, it is prepended automatically.
Zero or more objects to format using the placeholders in because.
In This Topic
    NotBeEqualTo Method
    In This Topic
    Asserts that the current collection does not contain all the same elements in the same order as the collection identified by unexpected. Elements are compared using their System.Object.Equals(System.Object).
    Syntax
    public AndConstraint<TAssertions> NotBeEqualTo( 
   IEnumerable<T> unexpected,
   string because,
   params object[] becauseArgs
)

    Parameters

    unexpected
    An IEnumerable with the elements that are not expected.
    because
    A formatted phrase as is supported by System.String.Format(System.String,System.Object[]) explaining why the assertion is needed. If the phrase does not start with the word because, it is prepended automatically.
    becauseArgs
    Zero or more objects to format using the placeholders in because.
    Exceptions
    ExceptionDescription
    System.ArgumentNullExceptionunexpected is a null reference (Nothing in Visual Basic).
    Supported Frameworks

    .NET: net5.0, net5.0-windows, net6.0, net6.0-macos, net6.0-windows, net7.0, net7.0-macos, net7.0-windows, net8.0, net8.0-browser, net8.0-macos, net8.0-windows, net9.0, net9.0-browser, net9.0-macos, net9.0-windows, net10.0, net10.0-browser, net10.0-macos, net10.0-windows.

    .NET Standard: netstandard2.0, netstandard2.1.

    .NET Framework: net40, net403, net45, net451, net452, net46, net461, net462, net463, net47, net471, net472, net48, net481.

    See Also

    Reference

    GenericCollectionAssertions<TCollection,T,TAssertions> Class
    GenericCollectionAssertions<TCollection,T,TAssertions> Members

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