image in datagrid

[nicholas]

How can I show or hide an image in a datagrid depending on a field.

Something like: if myfield <> "" then 'show image' else 'show noimage.gif'
end if

the image field contains the image name
so: 'show image' could be something like <img source="/myfolder<%#
databinder.eval(....) %>" ..... >

THX

 

[Guest]

Override the Item Data Bound event and check the other field in the datagrid
item event args.

You could also add a custom field to the dataset you are binding to that
lists the values for the image and check that on databind.

HTH

 

[nicholas]

Could you explain your first proposition, I don't realy understand what you
mean.

THX a lot,
Nic

 

[Guest]

When you bind a dataset to a datagrid an event happens for every row that is
binded. Therefore you need to override that event and check your field(s).
Here is an article on doing this:

http://www.csharphelp.com/archives3/archive570.html

Here is another article on how to highlight a row in a datagrid. Just
switch the example to what you need to do.

http://www.dotnetjunkies.com/HowTo/CD157079-5F60-4031-8BFB-9F8C7478D586.dcik

HTH

MikeL

 

[Joel Martinez]

The easiest way that I've found of doing it is by setting an event
handler on the ItemDataBound event. Put a placeholder control into
your item template, pull it out on the data bound event, then do:

if (whatever)
plcHolder.Controls.Add("<img src=\"whatever.jpg\" />");

or you could even extend that concept and use an HtmlImage control
(<img runat="server" />) instead of a placeholder ... in fact, that
would be a little nicer.

Hope that helps,
Joel Martinez
http://www.onetug.org - Orlando .NET User Group
http://www.codecube.net - blog