Conditionally write a Template Item is data in field exists?

D. Shane Fowlkes

I'm using ASP.NET (VB) and I'm pretty new to .NET and using Templates.

I have a SqlDataReader which is bound to a Repeater. The Repeater contains
a table and for each record, it'll write a table. Easy stuff so far. My
table contains typical Address and Phone numbers data. What I'd like to do
is check to see if "Address2" (field) is empty and/or null. If so then skip
the line all together, but if it does contain something, write:

<%# Container.DataI tem("Address2") %> 

Make sense? I'm trying to avoid having an empty line between Address2 and
City, State Zip. I've experimented with a "helper function" by sending
Address2 to a Function and have it send back nothing or literally the HTML
to complete this line. But again, if it's null, it errors. Hmmm. What to
do??

I would appreciate any pointers or advice.
<asp:Repeater ID="rptProvider s" Runat="Server">
<ItemTemplate >

<table width="95%" border="0" align="center" cellpadding="5"
cellspacing="0" class="grid">
<tr>
<td class="colheade r">(<% =intGlobalCount er %>) <%#
Container.DataI tem("OrgName") %></td>
</tr>

<tr>
<td>
 <img src="../assets/providers/<%#
Container.DataI tem("Photo") %>" class="imgborde r" border="0" />
<%# Container.DataI tem("ProfileDes cription") %>
Serving: Area 1, Area 2, Area 3
<%# Container.DataI tem("Address") %> 
<%# Container.DataI tem("Address2") %> 
<%# Container.DataI tem("City") %>, <%# Container.DataI tem("State") %> <%#
Container.DataI tem("Zip") %> 
<%# Container.DataI tem("Phone") %> 
<%# Container.DataI tem("Fax") %> 
<a href="mailto:<% # Container.DataI tem("ContactEma il") %>"><%#
Container.DataI tem("ContactEma il") %></a> 
<a href="<%# Container.DataI tem("WebSite") %>" target="_blank" ><%#
Container.DataI tem("WebSite") %></a></td>
</tr>
</table>
<% intGlobalCounte r = intGlobalCounte r + 1 %>
</ItemTemplate>
</asp:Repeater>

Nov 18 '05 #1

Subscribe Reply

1340

Rick Spiewak

You can use something like this:

Public Shared Function no_null_string( ByVal value As Object) As String
If value Is System.DBNull.V alue Then
Return String.Empty
Else
Return value.ToString
End If
End Function

"D. Shane Fowlkes" <sh********** @h-o-t-m-a-i-l.com> wrote in message
news:OL******** ******@TK2MSFTN GP10.phx.gbl...

I'm using ASP.NET (VB) and I'm pretty new to .NET and using Templates.

I have a SqlDataReader which is bound to a Repeater. The Repeater contains a table and for each record, it'll write a table. Easy stuff so far. My
table contains typical Address and Phone numbers data. What I'd like to do is check to see if "Address2" (field) is empty and/or null. If so then skip the line all together, but if it does contain something, write:

<%# Container.DataI tem("Address2") %> 

Make sense? I'm trying to avoid having an empty line between Address2 and
City, State Zip. I've experimented with a "helper function" by sending
Address2 to a Function and have it send back nothing or literally the HTML
to complete this line. But again, if it's null, it errors. Hmmm. What to do??

I would appreciate any pointers or advice.
<asp:Repeater ID="rptProvider s" Runat="Server">
<ItemTemplate >

<table width="95%" border="0" align="center" cellpadding="5"
cellspacing="0" class="grid">
<tr>
<td class="colheade r">(<% =intGlobalCount er %>) <%#
Container.DataI tem("OrgName") %></td>
</tr>

<tr>
<td>
 <img src="../assets/providers/<%#
Container.DataI tem("Photo") %>" class="imgborde r" border="0" />
<%# Container.DataI tem("ProfileDes cription") %>
Serving: Area 1, Area 2, Area 3
<%# Container.DataI tem("Address") %> 
<%# Container.DataI tem("Address2") %> 
<%# Container.DataI tem("City") %>, <%# Container.DataI tem("State") %> <%# Container.DataI tem("Zip") %> 
<%# Container.DataI tem("Phone") %> 
<%# Container.DataI tem("Fax") %> 
<a href="mailto:<% # Container.DataI tem("ContactEma il") %>"><%#
Container.DataI tem("ContactEma il") %></a> 
<a href="<%# Container.DataI tem("WebSite") %>" target="_blank" ><%#
Container.DataI tem("WebSite") %></a></td>
</tr>
</table>
<% intGlobalCounte r = intGlobalCounte r + 1 %>
</ItemTemplate>
</asp:Repeater>

Nov 18 '05 #2

Scott Allen

I'm sure a helper function could pull this off. What sort of error
were you getting and what did the code look like? You might just need
a little bit of logic to avoid a null reference.

--
Scott
http://www.OdeToCode.com

On Fri, 30 Apr 2004 11:47:42 -0400, "D. Shane Fowlkes"
<sh********** @h-o-t-m-a-i-l.com> wrote:

I'm using ASP.NET (VB) and I'm pretty new to .NET and using Templates.

I have a SqlDataReader which is bound to a Repeater. The Repeater contains
a table and for each record, it'll write a table. Easy stuff so far. My
table contains typical Address and Phone numbers data. What I'd like to do
is check to see if "Address2" (field) is empty and/or null. If so then skip
the line all together, but if it does contain something, write:

<%# Container.DataI tem("Address2") %> 

Make sense? I'm trying to avoid having an empty line between Address2 and
City, State Zip. I've experimented with a "helper function" by sending
Address2 to a Function and have it send back nothing or literally the HTML
to complete this line. But again, if it's null, it errors. Hmmm. What to
do??

I would appreciate any pointers or advice.
<asp:Repeater ID="rptProvider s" Runat="Server">
<ItemTemplate >

<table width="95%" border="0" align="center" cellpadding="5"
cellspacing="0 " class="grid">
<tr>
<td class="colheade r">(<% =intGlobalCount er %>) <%#
Container.Data Item("OrgName") %></td>
</tr>

<tr>
<td>
 <img src="../assets/providers/<%#
Container.Data Item("Photo") %>" class="imgborde r" border="0" />
<%# Container.DataI tem("ProfileDes cription") %>
Serving: Area 1, Area 2, Area 3
<%# Container.DataI tem("Address") %> 
<%# Container.DataI tem("Address2") %> 
<%# Container.DataI tem("City") %>, <%# Container.DataI tem("State") %> <%#
Container.Data Item("Zip") %> 
<%# Container.DataI tem("Phone") %> 
<%# Container.DataI tem("Fax") %> 
<a href="mailto:<% # Container.DataI tem("ContactEma il") %>"><%#
Container.Data Item("ContactEm ail") %></a> 
<a href="<%# Container.DataI tem("WebSite") %>" target="_blank" ><%#
Container.Data Item("WebSite") %></a></td>
</tr>
</table>
<% intGlobalCounte r = intGlobalCounte r + 1 %>
</ItemTemplate>
</asp:Repeater>

Nov 18 '05 #3

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