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After each loop, do I need to set those xmlNodeList to null?
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After each loop, do I need to set those xmlNodeList to null?

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When I debug it and check the line I am no on yet, the count property of the xmlnodelist has value already.
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When I debug it and check the line I am no on yet, the count property of the xmlnodelist has value already.

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Do I also need to check for how XmlNodeList it brought back form my selectNodes() method?<br />
<br />
I only checked the not node but my xml file has no record of &lt;titles&gt;&lt;yyyy&gt; &nbsp;on this iteration. why would secondaryTitles != null fail?<br />
My code enters that if statement. <br />
Do I need to check for .count = 0 property too?<br />
<br />
&nbsp;foreach (XmlNode element in elements)<br />
{<br />
&nbsp;<br />
<br />
XmlNodeList secondaryTitles = element.SelectNodes(&quot;title<wbr />s/yyyy&quot;); &lt;===<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (secondaryTitles != null) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;=== count is 0 and the code enters here<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; foreach (XmlNode node in secondaryTitles)<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; doing somehting here<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}<br />
}
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Do I also need to check for how XmlNodeList it brought back form my selectNodes() method?

I only checked the not node but my xml file has no record of <titles><yyyy>  on this iteration. why would secondaryTitles != null fail?
My code enters that if statement. 
Do I need to check for .count = 0 property too?

 foreach (XmlNode element in elements)
{
 

XmlNodeList secondaryTitles = element.SelectNodes("titles/yyyy"); <===
                  if (secondaryTitles != null)                     <=== count is 0 and the code enters here
                {
                    foreach (XmlNode node in secondaryTitles)
                    {
                                doing somehting here
                     }
                 }
}

Check for xmlnodelist != null not enouhg?

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