C# VS.NET - reading in XML file and saving in database

[jenniamia]

I'm new to programming, so this might be simpler than I realize but I'd appreciate a push in the right direction.

I'm using VS.NET 2005 with a database, SQL 2000. I'm writing in C# code and I'm trying to take an XML file and read in a particular part of that data (all the Variable nodes). Following that I have to remove the data which I read in(again thats the Variable nodes), and save the additional data in the database as a file. Currently I'm trying to use the removechild method, but I either don't know how to identify the node properly or am just using the method incorrectly.

My code part:

private CDataSet.CDataT able ExtCreateCToolD ataSet(string cToolFile)
{
XmlDataDocument xmlDataDoc = new XmlDataDocument ();
DataSet dataSet = new DataSet();
dataSet.ReadXml (cToolFile);
DataTable newTable = dataSet.Tables["Variable"];

while (xmlDataDoc.Rem oveChild(xmlDat aDoc.SelectSing leNod e("Variable") ) != null) ; //... here’s where I’m lost

xmlDataDoc.Save (cToolFile);
return CreateXMLDataSe t(newTable);
}


and my XML:
<?xml version="1.0" encoding="utf-8" ?>
- <project name="ExampleSe tA">
- <Variable name="example1" >
<address>4149 </address>
<dataSize>1</dataSize>
<data_0>1000</data_0>
<units>ms</units>
<dataType>metri c</dataType>
</Variable>
- <Variable name="example2" >
<dataSize>2</dataSize>
<data_0>1000</data_0>
<data_1>2000</data_1>
<units>ms</units>
<dataType>metri c</dataType>
</Variable>
- <Configuratio n />
- <Options>
<StationAdd>1 </StationAdd>
<TimerRate>10 0</TimerRate>
<VerifyVersion> False</VerifyVersion>
</Options>
</project>