I've got a web form coded behind with C#. The form has a datagrid control inside of it and within that there's a templated column that contains an imagebutton control. The imagebutton control sets the ImageUrl property as follows:

Now the problem is that the HTML that is output interprets the directive literally outputting as the image button's image source: "<%# GetImageDirectory() %>myimage.gif"

Now I've successfully bound date using this format as in:

so why doesn't this work?

What does GetImageDIrectory() do?

Image directory, my own func, just returns the root of the image directory as a string.

Hey,

Maybe because a returned string is not a bindable collection, as denoted by <%# %>. Not 100% sure about that. Try changing <%# %> to <%= %>, or alter the ImageUrl property at runtime.

Brian

Typically when you need to put databinding syntax inside a markup attribute you use single quotes:

<asp:imagebutton ... ImageUrl='<%# GetImageDirectory() %>myimage.gif'...> ... </asp:imagebutton>

However, if you are simply looking to have something that gives you the root image directory, you can use a piece of built-in functionality:

<asp:imagebutton ... ImageUrl="~/images/myimage.gif"...> ... </asp:imagebutton>

ASP.NET will automatically replace the ~ with the application root directory. You can then make a root relative reference to any resource using that syntax. However, it may not solve the problem if you need a truly dynamic images directory.

Excellent. Thanks for the valuable info!