ObjectDataProvider MethodName="GetValues"的问题

[bigblacktree1]

<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:assembly="clr-namespace:System;assembly=mscorlib"
xmlns:local="clr-namespace:WpfApplication1"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<ObjectDataProvider x:Key="sexEnum" MethodName="GetValues" ObjectType="{x:Type assembly:Enum}">
<ObjectDataProvider.MethodParameters>
<x:Type Type="local:SexOpt" />
</ObjectDataProvider.MethodParameters>
</ObjectDataProvider>
</Window.Resources>
如上代码中GetValues是从哪里来的，我的程序里从来没有定义这个函数啊。