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Fluent Assertions Documentation
[Root] / FluentAssertions Assembly / FluentAssertions.Collections Namespace / GenericCollectionAssertions<TCollection,T,TAssertions> Class / NotContain Method / NotContain(T,String,Object[]) Method
The element that is not expected to be in the collection
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
    NotContain(T,String,Object[]) Method
    In This Topic
    Asserts that the current collection does not contain the supplied unexpected item.
    Syntax
    public AndConstraint<TAssertions> NotContain( 
   T unexpected,
   string because,
   params object[] becauseArgs
)

    Parameters

    unexpected
    The element that is not expected to be in the collection
    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.
    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
    Overload List

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