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You work as a system administrator at Certkiller.com. You are in the process of creating anASP.NET application using Microsoft .NET Framework v3.5. 
You receive an instruction from management to create a custom-templated server control. Toensure productivity you need to make sure that the child controls of the newly created servercontrol are identified within the hierarchy of the page. You thus need to identify the interface thatwill accomplish this. 
What should you do？（）

Certkiller.com has hired you as a system administrator for their network. You make use of .NETFramework v3.5 in order to create a Microsoft ASP.NET application. 
You decide to create a Web form. You add the subsequent code fragment to the Web form.<asp：Repeater ID="rept1" runat="server" DataSourceID="ds1" ItemDataBound="rept1_b"><ItemTemplate>
<asp：Label ID="lblQty" runat="server" Text=’<%# Eval（"Qty"） %>’ />
</ItemTemplate>
</asp：Repeater> 
The DataSource control named CKDataSource recovers the Quantity column values from a tablenamed Orders. You the create the rptData_ItemDataBound event handler using the subsequentcode fragment. （The line numbers is included for reference purposes） 
1 protected void rept_b（object sender， RepeaterItemEventArgs e）
2 {
3
4 if（CKLbl != null）
5 if（int.Parse（CKLbl.Text） < 10）6 CKLbl.ForeColor = Color.Red；7 } 
You receive an instruction from management to recover a reference to the lblQuantity Labelcontrol into a variable. The variable is named CKLbl. 
What should you do？（）