WPF：在运行时添加项目后刷新ListView

Question

我有一个记录进程的ListView。发送到ListView的消息应在添加后显示。在我的情况下，程序停止进行任何用户交互，如果过程完成，则所有项目都可见。

但是我需要在添加之后直接看到该项目，并且最后添加的内容位于列表的底部。添加每个项目后是否有可能刷新ListView？

我的XAML：

<ListView Name="lvUpgrade">
    <ListView.View>
        <GridView>
            <GridViewColumn Width="20px">
                <GridViewColumn.CellTemplate>
                    <DataTemplate>
                        <Image Source="{Binding Path=Icon}" />
                    </DataTemplate>
                </GridViewColumn.CellTemplate>
            </GridViewColumn>
            <GridViewColumn Width="75px" DisplayMemberBinding="{Binding Path=Time, StringFormat={}{0:HH:mm:ss}}" />
            <GridViewColumn Width="300px" Header="Nachricht" DisplayMemberBinding="{Binding Path=Message}" />
        </GridView>
    </ListView.View>
</ListView>

背后的代码：

Public Class Upgrade

    Public Sub AddMessage(ByVal message As Message)
        Me.lvUpgrade.Items.Add(message)
    End Sub

    Public Class Message

        Public Enum MessageType

            Normal
            Information
            Success
            Warning
            [Error]
        End Enum

        Public Sub New(ByVal type As MessageType, ByVal message As String)
            _Type = type
            _Message = message
        End Sub

        Private _Type As MessageType = MessageType.Normal
        Public ReadOnly Property Type As MessageType
            Get
                Return _Type
            End Get
        End Property

        Private _Message As String = String.Empty
        Public ReadOnly Property Message As String
            Get
                Return _Message
            End Get
        End Property

        Private _Time As DateTime = Now
        Public ReadOnly Property Time As DateTime
            Get
                Return _Time
            End Get
        End Property

        Public ReadOnly Property Icon As BitmapImage
            Get
                Select Case Me.Type
                    Case MessageType.Information
                        Return My.Resources.Information16.ToBitmapImage
                    Case MessageType.Success
                        Return My.Resources.OK16.ToBitmapImage
                    Case MessageType.Warning
                        Return My.Resources.Alert16.ToBitmapImage
                    Case MessageType.Error
                        Return My.Resources.Error16.ToBitmapImage
                    Case Else
                End Select

                Return Nothing
            End Get
        End Property
    End Class
End Class

感谢您的回复。