Catching Exception

[Jeff Gaines]

I am updating my apps to use XML files rather than ini files for
application settings.

As a first step I am writing an XML editor (rather like an ini editor)
so I can learn how this works. I have the following line:

try
{
txtXMLName.Text = xmlRead.Name;

The problem is that in reading an XML file that doesn't have a'Name'
the app raises an exception and stops, even though it is in a 'try'
block.

Is there any way of testing for this and retreating gracefully?

Apologies if I have the terminology wrong, this is all new to me! The
following is an XML file:

<?xml version="1.0" encoding="Windows-1252"?>
<!-- JG Config File -->
<!-- Modify at Your Peril :-) -->
<Map JDATADIR="E:\Data\DataBase" JINFODIR="E:\Data\JHelp" />

and if the entry 'Map' is missing I get the error outlined above. I am
treating this like a section heading in an ini file but that may be
the wrong approach.

Many thanks.
--
Jeff Gaines Damerham Hampshire UK

[Oleg Tkachenko]

Jeff Gaines wrote:

As a first step I am writing an XML editor (rather like an ini editor)
so I can learn how this works. I have the following line:

try
{
txtXMLName.Text = xmlRead.Name;

The problem is that in reading an XML file that doesn't have a'Name'
the app raises an exception and stops, even though it is in a 'try'
block.
If xmlRea? is XmlReader, then Name property of course always exists.
Hmm, this is too bizarre, show us more code - what is xmlRead?
<?xml version="1.0" encoding="Windows-1252"?>
<!-- JG Config File -->
<!-- Modify at Your Peril :-) -->
<Map JDATADIR="E:\Data\DataBase" JINFODIR="E:\Data\JHelp" />

and if the entry 'Map' is missing I get the error outlined above.

Any XML document must have single root element. If Map element is
missing, such XML is not wellformed and cannot be processed.
--
Oleg Tkachenko
http://www.tkachenko.com/blog
Multiconn Technologies, Israel

[Jeff Gaines]

On Sat, 20 Sep 2003 20:45:21 +0300, Oleg Tkachenko
<oleg@NO_SPAM_PLEASEtkachenko.com> wrote:

Jeff Gaines wrote:

As a first step I am writing an XML editor (rather like an ini editor)
so I can learn how this works. I have the following line:

try
{
txtXMLName.Text = xmlRead.Name;

The problem is that in reading an XML file that doesn't have a'Name'
the app raises an exception and stops, even though it is in a 'try'
block.

If xmlRea? is XmlReader, then Name property of course always exists.
Hmm, this is too bizarre, show us more code - what is xmlRead?

<?xml version="1.0" encoding="Windows-1252"?>
<!-- JG Config File -->
<!-- Modify at Your Peril :-) -->
<Map JDATADIR="E:\Data\DataBase" JINFODIR="E:\Data\JHelp" />

and if the entry 'Map' is missing I get the error outlined above.

Any XML document must have single root element. If Map element is
missing, such XML is not wellformed and cannot be processed.

Hi Oleg, thanks for your reply.

I have now discovered the error arises just before I enter the 'try'
block so all is actually working as expected - i.e. not working :-))

I was hoping to treat an XML file like an ini file and just pull a
value out from a key name but it seems slightly more tricky than that
although I think I am making progress.

Thanks again for your reply.
--
Jeff Gaines Damerham Hampshire UK