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You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You create a page that contains the following code fragment. 
| English | Chinese | Japan | Korean | - 92 - Test Information Co.， Ltd. All rights reserved. <asp：ListBox ID="lstLanguages"AutoPostBack="true" runat="server" /> 
You write the following code segment in the code-behind file for the page. 
void BindData（object sender， EventArgs e） { 
lstLanguages.DataSource = 
CultureInfo.GetCultures（CultureTypes.AllCultures）； 
lstLanguages.DataTextField = "EnglishName"； 
lstLanguages.DataBind（）； 
} 
You need to ensure that the lstLanguages ListBox control maintains the selection of the user during postback. 
Which line of code should you insert in the constructor of the page？（）

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You create a page that contains the following control. 
 You write the following code segment in the code-behind file for the page. 
Private Sub LoadDate（ByVal sender As Object， _ByVal e As EventArgs） 
If IsPostBack Then 
calBegin.SelectedDate = _ 
DirectCast（ViewState（"date"）， DateTime）
End If 
End Sub 
Private Sub SaveDate（ByVal sender As Object， _ByVal e As EventArgs） 
ViewState（"date"） = calBegin.SelectedDate 
End Sub 
You need to ensure that the calBegin Calendar control maintains the selected date. Which code segment should you insert in the constructor of the page？ （）