I have the following CheckBoxList:

  <asp:CheckBoxList ID="CheckBoxList" runat="server" RepeatColumns="2" RepeatDirection="Horizontal" Width="75%" Height="80px" CellPadding="2" CellSpacing="1" OnSelectedIndexChanged="CheckBoxList2_SelectedIndexChanged">                 <asp:ListItem Text="Option 1" Value="Option 1" />                 <asp:ListItem Text="Option 2" Value="Option 2"></asp:ListItem>                 <asp:ListItem Text="Option 3" Value="Option 3" />                 <asp:ListItem Text="Option 4" Value="Option 4" />     </asp:CheckBoxList> 

In the aspx.cs file, I have:

foreach (var item1 in CheckBoxList.Items.Cast<ListItem>().Where(item1 => item1.Selected)) {  {  Optional = Optional + item1.Text;   } } 

The issue I am having is: When I do not check the first option and check 2 or 3 of the other options, only the first option of that selection will appear in the output. If I select option 1 and any other option everything works the way it is supposed to be. But lets say if I select option 2 and option 3. Only option 2 will appear.