Test for a nodes existance???

[lyndon hughey]

I'm having a problem setting the testing for the existance of a nodes
outerxml property. Below I try to test for the existance before I access
the property, but I receive a null exception error. How do i test for the
existance of this property before I use it?

Thanks,

Lyndon

XmlNode rawMicroAmount =
doc.SelectSingleNode("/iso8583msg/field[24]/subfield[8]/element[7]/key");

XmlNode rawMicroAmountVal =
doc.SelectSingleNode("/iso8583msg/field[24]/subfield[8]/element[7]/value/tex
t()");

writer.WriteStartElement(rawMicroAmount.InnerXml);

if(null!=rawMicroAmountVal.OuterXml)

{

writer.WriteString(rawMicroAmountVal.OuterXml);

}

writer.WriteEndElement();

[Oleg Tkachenko [MVP]]

lyndon hughey wrote:

XmlNode rawMicroAmountVal =
doc.SelectSingleNode("/iso8583msg/field[24]/subfield[8]/element[7]/value/tex
t()");

SelectSingleNode() returns null when selects no node. So just test if
rawMicroAmountVal is null.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[Oleg Tkachenko [MVP]]

lyndon hughey wrote:

XmlNode rawMicroAmountVal =
doc.SelectSingleNode("/iso8583msg/field[24]/subfield[8]/element[7]/value/tex
t()");

SelectSingleNode() returns null when selects no node. So just test if
rawMicroAmountVal is null.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[lyndon hughey]

Thanks Oleg.
"Oleg Tkachenko [MVP]" <oleg@NO!SPAM!PLEASEtkachenko.com> wrote in message
news:eK****************@TK2MSFTNGP10.phx.gbl...

lyndon hughey wrote:

XmlNode rawMicroAmountVal =
doc.SelectSingleNode("/iso8583msg/field[24]/subfield[8]/element[7]/value/tex t()");

SelectSingleNode() returns null when selects no node. So just test if
rawMicroAmountVal is null.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com

[lyndon hughey]

Thanks Oleg.
"Oleg Tkachenko [MVP]" <oleg@NO!SPAM!PLEASEtkachenko.com> wrote in message
news:eK****************@TK2MSFTNGP10.phx.gbl...

lyndon hughey wrote:

XmlNode rawMicroAmountVal =
doc.SelectSingleNode("/iso8583msg/field[24]/subfield[8]/element[7]/value/tex t()");

SelectSingleNode() returns null when selects no node. So just test if
rawMicroAmountVal is null.

--
Oleg Tkachenko [XML MVP]
http://blog.tkachenko.com