Repeater’s SeparatorTemplate with Eval

asp.netdata-bindingevalrepeater

is it possible to use Eval or similar syntax in the SeparatorTemplate of a Repeater?

Id' like to display some info of the last item in the separator template like this:

<table>
    <asp:Repeater>
        <ItemTemplate>
            <tr>
                <td><%# Eval("DepartureDateTime") %></td>
                <td><%# Eval("ArrivalDateTime") %></td>
            </tr>
        </ItemTemplate>
        <SeparatorTemplate>
            <tr>
                <td colspan="2">Change planes in <%# Eval("ArrivalAirport") %></td>
            </tr>
        </SeparatorTemplate>
    <asp:Repeater>
<table>

Hopping that it'll generate something like this:

<table>
    <asp:Repeater>
            <tr>
                <td>2009/01/24 10:32:00</td>
                <td>2009/01/25 13:22:00</td>
            </tr>
            <tr>
                <td colspan="2">Change planes in London International Airport</td>
            </tr>
            <tr>
                <td>2009/01/25 17:10:00</td>
                <td>2009/01/25 22:42:00</td>
            </tr>
    <asp:Repeater>
<table>

But the SeparatorTemplate seems to be ignoring the Eval() call. I tried using also the previous syntax like this: <%# DataBinder.Eval(Container.DataItem, "ArrivalAirport")%> with the same results.

Is it possible to display information of the previous item in a SeparatorTemplate? If not, can you suggest an alternative way to generate this code?

Thanks

Best Answer

Try this:

Add a private variable (or two) in the class of your WebForm that you can use to increment/track what the flight information is while you are performing your databinding at the item level.

Then in the ItemDatabound event, you can perform a simple evaluation if the item being databound is the ListItemType.Seperator type and display/hide/modify your seperator code that way.

Your WebForm page would look something like this at the top:

public partial class ViewFlightInfo : System.Web.UI.Page
{

    private int m_FlightStops;

    protected page_load
    {

        // Etc. Etc.

    }
}

Then when you get down to your data binding:

protected void rFlightStops_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    Repeater rFlightStops = (Repeater)sender;

    if (e.Item.ItemType == ListItemType.Header)
    {
        // Initialize your FlightStops in the event a new data binding occurs later. 
           m_FlightStops = 0;
    }

    if (e.Item.ItemType == ListItemType.Item
        || e.Item.ItemType == ListItemType.AlternatingItem)
    {
         // Bind your Departure and Arrival Time
         m_FlightStops++;
     }

    if (e.Item.ItemType == ListItemType.Seperator)
    {
       if (m_FlightStops == rFlightStops.Items.Count - 1)
       {
           PlaceHolder phChangePlanes = 
                    (PlaceHolder)e.Item.FindControl("phChangePlanes");
           phChangePlanes.Visible = false;
       }
    }
 }

...or something to this effect.

Related Topic