How do you stop reading XML in C#

[samas]

I have a program that cycles through an XML file and outputs to another file every 1000 records. Thyis works fine until the end of the XML file is reached, when it fails saying my 'root' tag is not closed - although it does for the previous files. It seems to be having issues with recognising the end of the XML file, so can someone please confirm how this is done? Currently I have a while loop to do this, with a for loop inside to cycle through the records, ie:

while (XmlReader.Read())
{
...

for (int i = 1; i <= 100; i++)
{
while (reads in a node here)
{
does the work
}
}

Close the XmlReader and XmlWriter
}

This works fine for the beginning, until the end of the file is reached; is my way of reading the XML file correct (I have also tried XmlReader != null), or is there a better way?

Many thanks.