asp.net gets a summary of the values of Checkbox in Datalist

The example code for the foreground is shown below, using the datalist control to display the StudentID and name in the Student table

 
<asp:DataList ID="dlTable" runat="server" > 
<ItemTemplate> 
<td align="center"> 
<asp:Label ID="lblID" runat="server" Text='<%#Eval("StudentID") %>' Visible="false"></asp:Label> 
<asp:CheckBox ID="Chkbox" runat="server" /> 
</td> 
<td> 
<%#Eval("studentname") %> 
</td> 
<td> 
<%#Eval("studentid") %> 
</td> 
</ItemTemplate> 
</asp:DataList> 

The background code is as follows:

 
//new1 a stringbulider An instance of the sbitems 

StringBuilder sbitems = new StringBuilder(); 
foreach (DataListItem item in dlTable.Items) 
{ 

// Get the foreground control  
CheckBox chkbox = item.FindControl("Chkbox") as CheckBox; 
Label lbId = item.FindControl("lblID") as Label; 

// if checkbox be check Ok, so that will correspond label The value of the binding is assigned to sbitems , for subsequent operations, such as deletion.  
if (chkbox == null || lblID== null) 
{ 
continue; 
} 
if (chkbox.Checked) 
{ 
sbitems.Append(lblID.Text.ToString()); 
sbitems.Append(","); 
} 
} 

// Due to the much 1 A comma, so more remove Out a  
if (!sbitems.ToString().Trim().Equals(string.Empty)) 
{ 
sbitems.Remove(sbitems.Length - 1, 1); 
} 

This gets the value selected from the foreground checkbox, but I feel that this method is a bit too complicated to use. If you have a better way to get Checkbox via C#, please comment. I would like to know how to use Checkboxlist.