ASP.NET inline code iif

Question

I have the following code:

<%# IIf(IsDBNull(Container.DataItem("idQuestionaire")), Me.pnlAdd.Visible = True, Me.pnlRemove.Visible = True)%> 

<asp:Panel ID="pnlAdd" runat="server" Visible="false">
        add
</asp:Panel>

<asp:Panel ID="pnlRemove" runat="server" Visible="false">
        remove
</asp:Panel>

So I want that if the Container item is NULL that the "pnlAdd" is Visible.

But I get the following error:

pnlAdd is not member of mySite.aspx

check your file name, did you rename or move it? check/post your first line of .aspx here, check/post your class name in the code behind here? — Ronaldinho Learn Coding
– Ronaldinho Learn Coding, Commented Oct 26, 2015 at 14:48

James · Accepted Answer · 2015-10-26 14:50:25Z

3

Seems like the context isn't correct, not sure if you can do this type of thing from within a data-binding expression. Try setting it by directly embedding it in the markup e.g.

<asp:Panel ID="pnlAdd" runat="server" Visible="<%# IsDBNull(Container.DataItem("idQuestionairre")) %>">
    add
</asp:Panel>

<asp:Panel ID="pnlAdd" runat="server" Visible="<%# !IsDBNull(Container.DataItem("idQuestionairre")) %>">
    remove
</asp:Panel>

answered Oct 26, 2015 at 14:50

James

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Lingo · Accepted Answer · 2015-10-26 14:59:49Z

0

SOLUTION:

I used this code:

         <asp:LinkButton ID="lbtnAdd" runat="server"  Text="::Add" Visible='<%# IIf(IsDBNull(Container.DataItem("idQuestionaire")), "true", "false")%>'></asp:LinkButton>
                <asp:LinkButton ID="lbtnRemove" runat="server"  Text="::Remove" Visible='<%# IIf(IsDBNull(Container.DataItem("idQuestionaire")), "false", "true")%>'></asp:LinkButton>

answered Oct 26, 2015 at 14:59

Lingo

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