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Repeater item if statement

Posted on 2008-06-16
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Last Modified: 2011-10-19
Hi,

I currently have a repeater item, that displays a text box and then a description of an item next to it with a link.  not ll of the items have a link though, so I need to create an if statement in the repeater to oly show the link version if the database field url is not null.  all my attempts so far have not worked.  here is the code for the basic link.  any help/guidance is appreciated.  all my attempts have ended with the Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. errer.

The area in question is simply the url string link.

td><asp:TextBox ID=txtBox Width=50 CssClass="CenterItem" runat=server ></asp:TextBox> <asp:HiddenField ID="hdnID" Value=<%# Eval("ID").ToString() %> runat=server /></td>
                                            <td><a href="<%# Eval("url").ToString() %>"><%# Eval("title").ToString() %></a> - <%# Eval("NumPerBox").ToString() %> per box
                                                <asp:RangeValidator ID="RangeValidator1" runat="server" ControlToValidate="txtBox" MinimumValue="0" MaximumValue="1500" ErrorMessage="Number must be between 0 and 1500."></asp:RangeValidator></td>

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Question by:fwong1
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9 Comments
 
LVL 22

Expert Comment

by:prairiedog
ID: 21796114
You can use Label to display URL like this:
<td><asp:Label ID ="lblURL" runat="server"><a href='<%# Eval("url").ToString() %>'><%# Eval("title").ToString() %></a></asp:Label></td>

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by:fwong1
ID: 21797709
That will shorten my code somewhat, but I am not following how that will help creating an if statement to make the title not a url if the database has no url value?
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LVL 22

Expert Comment

by:prairiedog
ID: 21797722
Have you tried that code yet? If the database has no URL value, no hyperlink will be created at all, so you do not need a if statement.
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Author Comment

by:fwong1
ID: 21804326
When I place the code in it does the same as mine did before.  I creates a blank link, that if clicked reloads the page back to the first view...
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LVL 22

Expert Comment

by:prairiedog
ID: 21804514
>>>I creates a blank link
Are you sure you placed my code in the right place? You cannot use <a> in your case, but you have to use Label and then assign a "<a hre...." string to the label. If Eval("url") is empty, then no link will be created. See my attached screen shot of a repeater using Northwind's Suppliers table.
One thing you need to keep in mind is that the URL needs to be a full URL if the link is for an external site, for example, "http://www.google.com", instead of "www.google.com".
2008-06-17-110014.jpg
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Author Comment

by:fwong1
ID: 21804789
First, thanks for the help.  I'm going to show you 2 screen prints...

This one here is what I need,  this is what I could do with the old ASP... I am upgrading everything to the ASP .ET 2.0, but I am stuck here....
1.jpg
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Author Comment

by:fwong1
ID: 21804796
And here is what I am getting
2.jpg
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Expert Comment

by:prairiedog
ID: 21813238
This is not what you asked in your question, though.
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Accepted Solution

by:
fwong1 earned 0 total points
ID: 21814573
Well, I was trying to get that across.  aparently I failed on that.  

I ended up creating 2 labels, one with the link, one without, and then I created 2 functions each a boolean function to decide which label to make visible.
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