Property '<propertyname>' cannot be initialized in an object initializer expression because it requires arguments

The members initialized in an object initializer list must be fields or properties, and property members cannot have parameters. For example, default properties require arguments, so they cannot be initialized in an object initializer list. For more information, see Default Properties.

Error ID: BC30992

To correct this error

• Remove from the initialization list all properties that have arguments.

Example

The following class contains a default property, defaultProp, that requires an integer argument.

    Public Class SomeStrings
        Private myStrings() As String
        Sub New(ByVal size As Integer)
            ReDim myStrings(size)
        End Sub
        Default Property defaultProp(ByVal index As Integer) As String
            Get
                Return myStrings(index)
            End Get
            Set(ByVal Value As String)
                myStrings(index) = Value
            End Set
        End Property
    End Class

Because the default property requires an argument, the following declaration causes an error.

' Dim strs As New SomeStrings(2) With { .defaultProp = "One" }

See Also

Concepts

Default Properties

Properties and Property Procedures

Object Initializers: Named and Anonymous Types