Set AlternateItemTemplate Manually

Question

Is there a way to set AlternateItemTemlate manually? I suffered from this question more than once.

I want to use it only for the last item. Maybe ItemDataBound event can be a solution but i can not figured out.

Only useful questions that I've found:

• Is there a similar way to AlternateItemTemplate to do this
• How can i get last record value from repeater control.?

Answer 1

The ItemDataBound is indeed a possible option, but for it to work, you would need the total count of the repeater items, so you can identify the last item:

protected void rptDummy_OnItemDataBound(object sender, RepeaterItemEventArgs e)
{
    int itemsCount = ((List<SomeClass>)rptDummy.DataSource).Count;

    if (e.Item.ItemType == ListItemType.Item)
    { 
        if(e.Item.ItemIndex == itemsCount - 1)
        {
            //Do Things here
        }
    }
}

You could even have two placeholders within the same template, one specially for the last item:

<ItemTemplate>
    <asp:PlaceHolder id="phIsNotLastOne" runat="server">Is not last</asp:PlaceHolder>
    <asp:PlaceHolder id="phIsLastOne" runat="server">Is last</asp:PlaceHolder>
</ItemTemplate>

Then you could do something like this:

protected void rptDummy_OnItemDataBound(object sender, RepeaterItemEventArgs e)
{
    long itemsCount = ((List<SomeClass>)rptDummy.DataSource).Count;

    if (e.Item.ItemType == ListItemType.Item)
    { 
        PlaceHolder phIsLastOne = (PlaceHolder)e.Item.FindControl("phIsLastOne");
        PlaceHolder phIsNotLastOne = (PlaceHolder)e.Item.FindControl("phIsNotLastOne");
        phIsLastOne.Visible = e.Item.ItemIndex == itemsCount - 1;
        phIsNotLastOne.Visible = !this.phIsLastOne.Visible;
    }
}