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Fluent Assertions Documentation
[Root] / FluentAssertions Assembly / FluentAssertions.Collections Namespace / GenericCollectionAssertions<TCollection,T,TAssertions> Class / AllBeAssignableTo Method / AllBeAssignableTo(Type,String,Object[]) Method
The expected type of the objects
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
    AllBeAssignableTo(Type,String,Object[]) Method
    In This Topic
    Asserts that all items in the collection are of the specified type expectedType
    Syntax
    public AndConstraint<TAssertions> AllBeAssignableTo( 
   Type expectedType,
   string because,
   params object[] becauseArgs
)

    Parameters

    expectedType
    The expected type of the objects
    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.ArgumentNullExceptionexpectedType 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
    Overload List

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