有关 Silverlight sdk 和子输入 C# 中的数据网格控件的问题

我正在使用DataGrid控件编写一个Silverlight 5 Web应用程序。我确实有一个有趣的问题。

我为每一行使用模板化列。每行表示可观察集合中的一个数据项。

每行包含一个复选框、一个文本块和一个文本框。

我的错误发生的环境是行数多于银光可以在屏幕上绘制的环境，从而启用垂直折叠条。

当用户将信息输入多个文本框和/或多个复选框时，将选中向下滚动随机框，并使用先前填充的文本框中的相似/部分输入填充随机文本框。

当用户向上滚动然后向下滚动时，将随机填充不同的行。我已经尝试过绑定和未绑定输入，结果是一样的。

我模拟了一个显示此问题的示例

这是 MainPage.xaml 的 XAML

<UserControl x:Class="DataGrid_bug_repro.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit"
mc:Ignorable="d"
d:DesignHeight="600" d:DesignWidth="800">
<Grid x:Name="LayoutRoot" Background="White">
    <StackPanel>
        <TextBlock Margin="60 0 0 0">Bound to Data Items</TextBlock>
    <sdk:DataGrid Name="dgBound" Height="280" Width="680" AutoGenerateColumns="False" FontSize="12" >
        <sdk:DataGrid.Columns>
            <sdk:DataGridTemplateColumn Header="Select" >
                <sdk:DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <CheckBox Width="40" Tag="{Binding ID}"  IsChecked="{Binding Selected}" />
                        </StackPanel>
                    </DataTemplate>
                </sdk:DataGridTemplateColumn.CellTemplate>
            </sdk:DataGridTemplateColumn>
            <sdk:DataGridTemplateColumn Header="name" >
                <sdk:DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <Grid>
                                <TextBlock TextWrapping="Wrap" Text="{Binding Name}" TextOptions.TextFormattingMode="Ideal" />
                            </Grid>
                        </StackPanel>
                    </DataTemplate>
                </sdk:DataGridTemplateColumn.CellTemplate>
            </sdk:DataGridTemplateColumn>
            <sdk:DataGridTemplateColumn Header="txt" >
                <sdk:DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <Grid>
                                <TextBox Text="{Binding txt}" />
                            </Grid>
                        </StackPanel>
                    </DataTemplate>
                </sdk:DataGridTemplateColumn.CellTemplate>
            </sdk:DataGridTemplateColumn>
        </sdk:DataGrid.Columns>
    </sdk:DataGrid>
        <TextBlock Margin="60 0 0 0">Not Bound to Data Items</TextBlock>
    <sdk:DataGrid Name="dgNotBound" Height="280" Width="680" AutoGenerateColumns="False" FontSize="12" >
        <sdk:DataGrid.Columns>
            <sdk:DataGridTemplateColumn Header="Select" >
                <sdk:DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <CheckBox Width="40" Tag="{Binding ID}"  />
                        </StackPanel>
                    </DataTemplate>
                </sdk:DataGridTemplateColumn.CellTemplate>
            </sdk:DataGridTemplateColumn>
            <sdk:DataGridTemplateColumn Header="name" >
                <sdk:DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <Grid>
                                <TextBlock TextWrapping="Wrap" Text="{Binding Name}" TextOptions.TextFormattingMode="Ideal" />
                            </Grid>
                        </StackPanel>
                    </DataTemplate>
                </sdk:DataGridTemplateColumn.CellTemplate>
            </sdk:DataGridTemplateColumn>
            <sdk:DataGridTemplateColumn Header="txt" >
                <sdk:DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel>
                            <Grid>
                                <TextBox Text="" />
                            </Grid>
                        </StackPanel>
                    </DataTemplate>
                </sdk:DataGridTemplateColumn.CellTemplate>
            </sdk:DataGridTemplateColumn>
        </sdk:DataGrid.Columns>
    </sdk:DataGrid>
    </StackPanel>
</Grid>
</UserControl>

下面是 MainPage.xaml.cs 文件的 C# 代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace DataGrid_bug_repro
{
public class ITEM : INotifyPropertyChanged
{
    private string _ID = string.Empty;
    private bool _Selected = false;
    private string _Name = string.Empty;
    private string _txt = string.Empty;
    public string ID
    {
        get{return _ID;}
        set { _ID = value; onPropertyChanged(this, "ID"); }
    }
    public string Name
    {
        get { return _Name; }
        set { _Name = value; onPropertyChanged(this, "Name"); }
    }
    public string txt
    {
        get { return _txt; }
        set { _txt = value; onPropertyChanged(this, "txt"); }
    }
    public bool Selected
    {
        get { return _Selected; }
        set { _Selected = value; onPropertyChanged(this, "Selected"); }
    }
    public event PropertyChangedEventHandler PropertyChanged;
    private void onPropertyChanged(object sender, string propertyName)
    {
        if (this.PropertyChanged != null)
        {
            PropertyChanged(sender, new PropertyChangedEventArgs(propertyName));
        }
    }
  }
  public partial class MainPage : UserControl
  {
    public MainPage()
    {
        ObservableCollection<ITEM> Items = new ObservableCollection<ITEM> { 
                                new ITEM { ID="1", Name="Gomez" },
                                new ITEM { ID="2", Name="Morticia" },
                                new ITEM { ID="3", Name="Pugsly" },
                                new ITEM { ID="4", Name="Wednesday" },
                                new ITEM { ID="5", Name="Pubert" },
                                new ITEM { ID="6", Name="Uncle Fester" },
                                new ITEM { ID="7", Name="Grandmama" },
                                new ITEM { ID="8", Name="Thing" },
                                new ITEM { ID="9", Name="Lurch" },
                                new ITEM { ID="10", Name="Cousin Itt" },
                                new ITEM { ID="11", Name="Cousin Cackle" },
                                new ITEM { ID="12", Name="Kitty Cat" },
                                new ITEM { ID="13", Name="Aristotle" },
                                new ITEM { ID="14", Name="Homer" },
                                new ITEM { ID="15", Name="Tristan" },
                                new ITEM { ID="16", Name="Isolde" },
                                new ITEM { ID="17", Name="Zelda" },
                                new ITEM { ID="18", Name="Cleopatra" },
                                new ITEM { ID="19", Name="Bernice" },
                                new ITEM { ID="20", Name="Ophelia" },
                                new ITEM { ID="21", Name="Melancholia" },
                                new ITEM { ID="22", Name="Hester" },
                                new ITEM { ID="23", Name="Norman Normanmeyers" },
                                new ITEM { ID="24", Name="Normina Normanmeyers" },
                                new ITEM { ID="25", Name="N.J. Normanmeyers" }      };
        InitializeComponent();
        dgBound.ItemsSource = Items;
        dgNotBound.ItemsSource = Items;
    }
}
}

以前有人见过这个吗？ 有解决方法吗？我错过了一些明显的东西吗？

提前致谢:)

private void DataGrid_IsKeyboardFocusWithinChanged(object sender,     System.Windows.DependencyPropertyChangedEventArgs e)
{
        (sender as DataGrid).CommitEdit(DataGridEditingUnit.Row, true);
}