asked on

check end of nodes in sitemap in repeater

IN ASP.NET with C# I have the following declaration:
<asp:Repeater runat="server" ID="LeftsubMenusub" DataSource='<%# ((SiteMapNode) Container.DataItem).ChildNodes %>'>

I want in this section in the source code to check if the current node has a next node. If yes I will print a seperator and if not I will not.
How do I write the check in <% %>
Anat

McExp

To check for the next node use: -

smn.NextSibling!= null

McExp

Full Solution: -

<asp:Repeater runat="server" ID="MenuTest" DataSourceID="SiteMapDataSource1">
<ItemTemplate>
<%# Eval("Title") %>
<hr runat="server" visible='<%# ((SiteMapNode)Container.DataItem).NextSibling!=null %>' />
</ItemTemplate>
</asp:Repeater>

ANAT2403

ASKER

Hi,
You solution seem to be great but I don't manage to implement it and I am sure it is something small you will manage to help:
I want the following line
<div class="separator">|</div>
to set as visible or not or to enter as an if statement.
what tag should I use instead of your <hr>?
Thankyou
anat

ASKER CERTIFIED SOLUTION

McExp

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ANAT2403

ASKER

Hi McExp,
Very very good. you helped me a lot.
Just another small question :
Why the following statement give me error?
(((SiteMapNode)Container.DataItem).NextSibling.Description.ToString() != "more")
I want to check about properties of Nextsibling.
I've already gave you the points ofcourse.
Thanks again
Anat

McExp

I would guess that this is causing an error when you get to a node without a NextSibling. when the code reaches a NextSibling of null it will then try and test null.Description.ToString().

Which would fail with an object refrence not set instance of object error?

What I would do in this case is create a helper function in your codeBehind (which may not comple as I have just typed it directly to this form)

function bool UtlityFunctionName(object objSiteMapNode)
{
if (objSiteMapNode.GetType() == typeof(SiteMapNode)
{
SiteMapNode current = (SiteMapNode)objSiteMapNode;
if (Current.NextSibling != null)
{
return (Current.NextSibling.Description != "more");
}
}
return false;
}

McExp

In your aspx page then call <%# UtilityFunctionName(Container.DataItem)%>

ANAT2403

ASKER

Hi McExp,
Ofcourse you are absolutely right.
I had to put 2 conditions in my code so I just changed the order without using the code brhind.
This is the final solution:

<div class="separator">
<span id="MenuSep" runat="server" visible='<%# (((SiteMapNode)Container.DataItem).NextSibling!=null) && (((SiteMapNode)Container.DataItem).NextSibling.Description.ToString() != "more") %>' >|</span>
</div>

Thanks again, this problem bothered ne alot.
See you soon with my future problems.
Anat