Conditionally display image within FormView

[Mike]

I'm using a SqlDataSource to fetch data and display it in a FormView. One
of the elements is an image:

<asp:Image ID="ImageFile" runat="server" ImageURL='<%# Eval("ImageFile",
"~/storyimages/{0}") %>' />

However, sometimes there is no image to display, and therefore I want to set
the Image control's Visible property to false. I tried evaluating whether
the ImageFile field has a vlaue or not and using it to set the Visible
property like so:
Visible='<%# Eval("ImageFile") != DBNull.Value %>'

Nor does Visible='<%# Eval("ImageFile").ToString()!=null%>'

Can anyone point me ion the right direction?

Thanks

[Mike]

"Mike" <xx*@xxx.xxxwrote in message
news:uS*************@TK2MSFTNGP06.phx.gbl...

I'm using a SqlDataSource to fetch data and display it in a FormView. One
of the elements is an image:

<asp:Image ID="ImageFile" runat="server" ImageURL='<%# Eval("ImageFile",
"~/storyimages/{0}") %>' />

However, sometimes there is no image to display, and therefore I want to
set the Image control's Visible property to false. I tried evaluating
whether the ImageFile field has a vlaue or not and using it to set the
Visible property like so:
Visible='<%# Eval("ImageFile") != DBNull.Value %>'

Nor does Visible='<%# Eval("ImageFile").ToString()!=null%>'

Ignore this. I discovered my empty database fields were not nulls. They
contained empty strings. I updated the db, and now the above works fine.

Doh.