Contional testing in ItemTemplate of Repeater

[matt]

I wanted to conditionally show an IMG based on values in the Repeater
record. Here is the code I am trying to implement...this does not work
because it does not like the Container object in this context.

<itemtemplate>
<tr>
<td class="tsbody" align="left" valign="middle" bgcolor="#efefef">
&nbsp;<%# DataBinder.Eval(Container.DataItem, "StrDrugDesc") %>&nbsp;
</td>
<td class="tsbody" align="left" valign="middle" bgcolor="#efefef">
&nbsp;<b><%# DataBinder.Eval(Container.DataItem, "PrescriptNo")
%></b>&nbsp;
</td>
<td class="tsbody" align="center" valign="middle" bgcolor="#efefef">
<%
' **** PROBLEM HERE ****
Dim str as string = DataBinder.Eval(Container.DataItem, "DtmCompleted")
Dim str1 as string = DataBinder.Eval(Container.DataItem,
"DtmReturnedToInv")

' Only show if not completed and not returned
If (not (str is nothing) and not (str1 is nothing)) Then
%>
<img width="40" height="40" border="0"
src="../../images/touchscreen/verify_off.gif"
name="img<%# DataBinder.Eval(Container.DataItem, "StrCode") %>"
id="img<%# DataBinder.Eval(Container.DataItem, "StrCode") %>"
onclick="javascript:selectCustomer('<%#
DataBinder.Eval(Container.DataItem, "StrCode") %>');"
<% End If %>
/>
</td>
</tr>
</itemtemplate>

 

[matt]

Since I didn't get any responses yet, maybe I should rephrase the question
because I think this has to be a common functionality for web developers.

I am trying to show/hide an image in a table column based on a value in
underlying row's datarow. I am using the asp:Repeater because I am
displaying hierarchical data and it seemed the easiest to format with. The
image, when clicked, needs to fire a clientside javascript function.

I tried creating HtmlImage controls on the fly in the Repeater's
onitemcreated event. But, I haven't figured out how to get the image inside
the column I want because the <TD>'s are not set to runat "server". I
cannot locate the <TD> in the e.Item.Controls object.

Any Ideas?

Thanks a bunch, I'm really in a crunch now.

 

[Alessandro Zifiglio]

hi matt,
I see you are still stuck with classic asp ;P

In asp.net you do not declare code blocks anywhere in your hmtl and perform
evaluations

This is the way to go :

in your codebehind class you need to write your function :
Function DisplayImage(ByVal DtmCompleted As string, ByVal DtmReturnedToInv
As string,ByVal strCode as string) As String
' Do your evaluation here and then return your string
Return "<img style=""width:40px;height:40px;border:0px""
src=""../../images/touchscreen/verify_off.gif"" name=""img" & strcode & """
id=""img" & strcode & """ onclick=""javascript:selectCustomer('" & strcode &
"');""" & " />"
End Function



then call it in your repeater like this :

<itemtemplate>
<tr>
<td class="tsbody" align="left" valign="middle" bgcolor="#efefef">
&nbsp;<%# DataBinder.Eval(Container.DataItem, "StrDrugDesc") %>&nbsp;
</td>
<td class="tsbody" align="left" valign="middle" bgcolor="#efefef">
&nbsp;<b><%# DataBinder.Eval(Container.DataItem, "PrescriptNo")
%></b>&nbsp;
</td>
<td class="tsbody" align="center" valign="middle" bgcolor="#efefef">

<asp:Literal id="Literal1" text='<%# DisplayImage(DataBinder.Eval(Container,
"DataItem.DtmCompleted"), DataBinder.Eval(Container,
"DataItem.DtmReturnedToInv"), DataBinder.Eval(Container,
"DataItem.StrCode")) %>' runat="server"></asp:Literal>

</td>
</tr>
</itemtemplate>


I have used a literal control here and am supply the return value from your
function to its text value.