Read specific tags from XML nodes with varying no of tags and save to SQL DB using C# and Win form app

Question

I am having a XML file as:

     <?xml version="1.0" encoding="UTF-8"?>

      <Bom>

            <DepthOfProdStructure>0</DepthOfProdStructure>

            <ProductIndicator>BG</ProductIndicator>

            <MaterialNumber>0843200054</MaterialNumber>

            <MaterialDescription>Andon system for NHP Assembly lines</MaterialDescription>

            <ValidFromDate>2009-01-21</ValidFromDate>

            <ValidToDate>9999-12-31</ValidToDate>

            <MeasureUnitCode>ST</MeasureUnitCode>

         </Bom>

         <Bom>

            <DepthOfProdStructure>.1</DepthOfProdStructure>

            <BomItemNumber>0010</BomItemNumber>

            <BomItemCategory>L</BomItemCategory>

            <ProductIndicator>TS</ProductIndicator>

            <MaterialNumber>0804752290</MaterialNumber>

            <MaterialDescription>Trolley for P.C</MaterialDescription>

            <ComponentQuantity>1.0</ComponentQuantity>

            <ValidFromDate>2009-01-21</ValidFromDate>

            <ValidToDate>9999-12-31</ValidToDate>

            <IndicatorItemRelevantToProduction>X</IndicatorItemRelevantToProduction>

            <MeasureUnitCode>ST</MeasureUnitCode>

            <BomMaterialNumber>0843200054</BomMaterialNumber>

         </Bom>

         <Bom>

            <DepthOfProdStructure>..2</DepthOfProdStructure>

            <BomItemNumber>0010</BomItemNumber>

            <BomItemCategory>L</BomItemCategory>

            <ProductIndicator>TS</ProductIndicator>

            <MaterialNumber>0804752292</MaterialNumber>

            <MaterialDescription>Top sheet</MaterialDescription>

            <BomItemText1>R.Mat.:Stainless steeel</BomItemText1>

            <BomItemText2>Size: 605 x 495 x 1mm Thick</BomItemText2>

            <ComponentQuantity>1.0</ComponentQuantity>

            <ValidFromDate>2009-01-21</ValidFromDate>

            <ValidToDate>9999-12-31</ValidToDate>

            <IndicatorItemRelevantToProduction>X</IndicatorItemRelevantToProduction>

            <MeasureUnitCode>ST</MeasureUnitCode>

            <BomMaterialNumber>0804752290</BomMaterialNumber>

            <AccountNumberOfVendorOrCreditor>0097001674</AccountNumberOfVendorOrCreditor>

         </Bom>

As you can see from the above the no of Tags are changing with changing node level.

from which I want only:

1. Depthofprodstructure

2. Bomitemnumber

3. MaterialNumber

4. MaterialDescription

5. BomItemText1

6. ComponentQuantity 

7. ValidFromDate

8. BomMaterialNumber

tags to be fetched and stored to the data base using DataSet string variables as I need further processing on the fetched value Row- wise. Currently I was using the following code:

    if (txtXML.Text != null)

            {

                xmlFile = XmlReader.Create(txtXML.Text, new XmlReaderSettings());

                ds.ReadXml(xmlFile);

            }

            else

            {

                MessageBox.Show("Please Choose a XML File First");

            }

            int i = 0;

            connection.Open();

            for (i = 0; i <= ds.Tables[3].Rows.Count - 1; i++)

            {

                Product_Name1 = ds.Tables[3].Rows[i].ItemArray[0].ToString();

but as the no of tags are varying I am facing a lot of problem to store the data.

I am very much new to XML reading and do not have idea about LINQ. So anyone who can give a good working example from the above data would be appreciated. Thanks in advance.