Asp.net: handle null in a foreach loop

Question

Hi, in a ASP.NET application (MVC) I have a foreach loop that loops through a structure that may contain or not some element:

        <% foreach (XElement segnalazione in ((XElement)ViewData["collezioneSegnalazioni"]).Elements("dossier")) { %>

            <tr>

                <td><%= Html.Encode(segnalazione.Element("NUM_DOSSIER").Value) %></td>
                <td><%= Html.Encode(segnalazione.Element("ANAG_RAGSOC_CGN").Value) %></td>
                <td><%= Html.Encode(segnalazione.Element("ID_RIFATT_SEGN0").Value) %></td>
                <td><%= Html.Encode(segnalazione.Element("FLG_STATUS").Value) %></td>
                <td><%= Html.Encode(segnalazione.Element("DT_ACCADIMENTO").Value)%></td>
                <td><%= Html.Encode(segnalazione.Element("COD_RAMO_LUNA").Value) %></td>
            </tr>
        <% } %>

Now, I get a NullReferenceException when Element("DT_ACCADIMENTO") is not set within the XElement. Is there a quick way to handle this? I tried with

<td><%= Html.Encode(segnalazione.Element("DT_ACCADIMENTO").Value ?? "")%></td>

but it does not work as, I guess, it checks if Value is null, where I have a problem with the field itself. Any help appriciated

Answer 1

<td><%= Html.Encode((string)segnalazione.Element("DT_ACCADIMENTO") ?? "")%></td>

Answer 2

Try using:

segnalazione.Element("NUM_DOSSIER") == null ? "" : segnalazione.Element("NUM_DOSSIER").Value