如果有一个点＆＃34;为什么DataGrid不显示值？＆＃34;或＆＃34; /＆＃34;在列标题中？

Question

我在DataGrid中发现了非常奇怪的行为。我无法弄清楚为什么会发生这种情况，但如果列标题中有DataGrid或"."点，则"/"不会显示值。

XAML：

<Window x:Class="DataGridWpfApplication.MainWindow"
  <!--the code omitted for the brevity-->
    Title="MainWindow" Height="350" Width="525">
    <Grid>
         <DataGrid Name="dataGrid" AutoGenerateColumns="True"/>        
    </Grid>
</Window>

代码隐藏：

public MainWindow()
{
   InitializeComponent();
   PopulateDataGrid();
}

private void PopulateDataGrid()
{
   var _ds = new DataSet("Test");
   var employeeDataTable = new DataTable();
   employeeDataTable = _ds.Tables.Add("DT");
   for (int i = 0; i < 50; i++)
   {
       employeeDataTable.Columns.Add(i.ToString() + ".");//No Data in values
       //employeeDataTable.Columns.Add(i.ToString());//Data in values
   }
   for (int i = 0; i < 2; i++)
   {
       var theRow = employeeDataTable.NewRow();
       for (int j = 0; j < 50; j++)
       {
          if (j % 2 == 0)
          {
             theRow[j] = "a";
          }
          else
            theRow[j] = "b";
       }
       employeeDataTable.Rows.Add(theRow);
    }
   dataGrid.ItemsSource = employeeDataTable.AsDataView();
}

我的问题是如何才能把＃34;。＆＃34;和＆＃34; /＆＃34;列标题和显示数据？

更新

I wrote an answer in the previous question. Please, go here!:)