ListView绑定了一个List<>集合，有没有方法找到集合某一项对应的ListViewItem中的控件

Question

可能表达的不清楚用，结合一下代码应该清楚点。如果我想找UserList[3]对应ListView列表中的<Grid MouseLeftButtonDown="RestAuthCode" 这个元素的话应该如何找？还有如果我在ListView中单击了某行的按钮，如何查的该行对应的UserList是集合中的哪一个？求助高人解答，谢谢xaml:<ListView Margin="0,10,0,0" Grid.Row="1" ItemsSource="{Binding Path=UserList}">
                <ListView.ItemsPanel>
                    <ItemsPanelTemplate>
                        <WrapPanel Orientation="Vertical" />
                    </ItemsPanelTemplate>
                </ListView.ItemsPanel>
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Margin="8" Orientation="Horizontal">
                            <StackPanel>
                                <TextBlock Margin="0,31,0,9" Foreground="#ffbbbbbb" Text="{Binding Path=UserName,Mode=OneTime}" Width="120" />
                                <CheckBox HorizontalAlignment="Center" Content="xxx" IsChecked="True" />
                            </StackPanel>
                            <StackPanel>
                                <ComboBox Margin="8,28,8,5" Height="23" Width="90" Text="{Binding Path=BuyVersion,Mode=OneWayToSource}">
                                </ComboBox>
                                <CheckBox HorizontalAlignment="Center" Content="bbb" IsChecked="True" />
                            </StackPanel>
                            <Border BorderBrush="#FFeeeeee" BorderThickness="1" CornerRadius="4">
                                <Grid MouseLeftButtonDown="RestAuthCode" Width="220" Height="80">
                                    <TextBlock Foreground="#ffeeeeee" Text="验证码" VerticalAlignment="Center" HorizontalAlignment="Center" />
                                </Grid>
                            </Border>
                            <TextBox Text="{Binding Path=AuthCode}" FontSize="16" VerticalAlignment="Center" Padding="8,4" Margin="4,0" Width="100" />
                            <Button Content="提交" IsEnabled="{Binding Path=CanSubmit}" Click="Button_Click" Padding="8,0" Margin="4,0" Height="23" />
                            <TextBlock Text="{Binding Path=Result}" VerticalAlignment="Center" />
                        </StackPanel>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>cs:
        class UserDB : INotifyPropertyChanged
        {
            public string UserName { get; set; }
            public string Password { get; set; }
            public string BuyVersion { get; set; }
            public CookieContainer Cookies { get; set; }            private string authCode;
            public string AuthCode
            {
                get { return authCode; }
                set
                {
                    authCode = value;
                    NotifyPropertyChanged("AuthCode");
                }
            }            private string canSubmit;
            public string CanSubmit
            {
                get { return canSubmit; }
                set
                {
                    canSubmit = value;
                    NotifyPropertyChanged("CanSubmit");
                }
            }
}
//绑定到UserList
UserList = new ObservableCollection<UserDB>();

Answer 1

比如某一行的某Button的Click事件Button button = (Button)sender;
UserDB user = (UserDB)button.DataContext;