'Container.DataItem' is not declared

[Antony]

Hello,

in my aspx.file I have this code inside a datagrid:

<asp:TemplateColumn HeaderText="Picture">
<ItemTemplate>
<asp:Image id="Image1" runat="server" ImageUrl='upload/<%# Container.DataItem("photo")%>'></asp:Image>
</ItemTemplate>
</asp:TemplateColumn>

When I try to execute my page, I dont get any error but the image is not displayed.
Right clicking on web page in Internet Explorer i get this path: "c:\inetpub\wwwroot\website\upload\<%# Container.DataItem("photo")%>"
If i set a breakpoint on asp:image tag, i try to watch Container.DataItem("photo") value but I can read only this message: "'Container.DataItem' is not declared or the module containing it is not loaded in the debugging session."
So, what's wrong?!?

please help
Antony

[Teemu Keiski]

Put it like this in the ItemTemplate

<ItemTemplate>
<asp:Image id="Image1" runat="server" ImageUrl='<%#
DataBinder.Eval(Container.DataItem,"photo","upload/{0}")%>' />
</ItemTemplate>

E.g when binding to a property you need to build it all within the
databinding expression(here with the help of string formatting), otherwise
it all is interpreted as string, and the expression won't be evaluated.

--
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU
http://blogs.aspadvice.com/joteke
"Antony" <th********@libero.it> wrote in message
news:Xn********************************@193.70.192 .192...

Hello,

in my aspx.file I have this code inside a datagrid:

<asp:TemplateColumn HeaderText="Picture">
<ItemTemplate>
<asp:Image id="Image1" runat="server" ImageUrl='upload/<%#
Container.DataItem("photo")%>'></asp:Image>
</ItemTemplate>
</asp:TemplateColumn>

When I try to execute my page, I dont get any error but the image is not
displayed.
Right clicking on web page in Internet Explorer i get this path:
"c:\inetpub\wwwroot\website\upload\<%# Container.DataItem("photo")%>"
If i set a breakpoint on asp:image tag, i try to watch
Container.DataItem("photo") value but I can read only this message:
"'Container.DataItem' is not declared or the module containing it is not
loaded in the debugging session."
So, what's wrong?!?

please help
Antony

[Antony]

many thanks!
You healed my headache! :)

bye
Antony

"Teemu Keiski" <jo****@aspalliance.com> wrote in
news:ec**************@TK2MSFTNGP14.phx.gbl:

Put it like this in the ItemTemplate

<ItemTemplate>
<asp:Image id="Image1" runat="server" ImageUrl='<%#
DataBinder.Eval(Container.DataItem,"photo","upload/{0}")%>' />
</ItemTemplate>

E.g when binding to a property you need to build it all within the
databinding expression(here with the help of string formatting),
otherwise it all is interpreted as string, and the expression won't be
evaluated.