ASP.Net question concerning ItemTemplate in a GridView

  • Thread starter Thread starter Jay
  • Start date Start date
J

Jay

I use many GridView controls bound to data sources on an
ASP.Net Web site.

One of my controls shows address information
as follows:

MyName
MyAddress1
MyAddress2
MyCity, MyState MyZIP

The above information are incorporated into an
ItemTemplate with the fields evaluated at run time
with HTML <br /> tags after each field except the
last.

If MyAddress2 contains no data, then I want
the city, state and ZIP to be on the next
line following MyAddress1.

How do I "inform" the template not to
leave a blank line if MyAddress2 is null?
 
Jay said:
[...]
How do I "inform" the template not to
leave a blank line if MyAddress2 is null?
Click to expand...

The databinding syntax in the template allows you to enter any
expression that can be evaluated, so you may enter something like <%#
string.IsNullOrEmpty(Eval("MyAddress2"))?"":Eval("MyAddress2")+"<br />" %>
 
[...]
How do I "inform" the template not to
leave a blank line if MyAddress2 is null?
Click to expand...

    The databinding syntax in the template allows you to enter any
expression that can be evaluated, so you may enter something like <%#
string.IsNullOrEmpty(Eval("MyAddress2"))?"":Eval("MyAddress2")+"<br />" %>
Click to expand...

Right on. Thanks.

I would add one thing: the argument of string.IsNullOrEmpty ( ) must
be
a string, and so write

string.IsNullOrEmpty(Eval("MyAddress2").ToString() )? "" : Eval
("MyAddress2") + "<br />" %>

and this produces exactly what I wanted.

Now, I need to add another
feature. Where the listed institution has multiple locations, such as
a business
chain, I need to collapse all of the listings to a single line which
lists
MyBigBusinessChain which can be expanded by the user to expose all
of the local locations. Probably will fold an AJAX CollapsiblePanel
control
into a grid view, but I'll make that the subject of another post in
a related newsgroup.

Again, AP, thanks.

J
 
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