How to merge multiple XML files with data in same format in it to a single XML file with all data together using C#.NET?

Question

I have a blob (XYZ) that receives multiple XML files in same format. See below

XML file 1:

<Product>
    <ID>001</ID>
    <Name>John</Name>
    <Designation>Developer</Designation>
</Product>

XML file 2:

<Product>
    <ID>002</ID>
    <Name>Peter</Name>
    <Designation>Tester</Designation>
</Product>

XML file 3:

<Product>
    <ID>003</ID>
    <Name>Arun</Name>
    <Designation>Support</Designation>
</Product>

XML file 4:

<Product>
    <ID>004</ID>
    <Name>Swetha</Name>
    <Designation>Analyst</Designation>
</Product>

XML file 5:

<Product>
    <ID>005</ID>
    <Name>Gokul</Name>
    <Designation>Maintainence</Designation>
</Product>

I need to merge all these files to a single XML file like below and put into another blob (ABC).

Merged XML file:

<xml>
<Product>
    <ID>001</ID>
    <Name>John</Name>
    <Designation>Developer</Designation>
</Product>

<Product>
    <ID>002</ID>
    <Name>Peter</Name>
    <Designation>Tester</Designation>
</Product>

<Product>
    <ID>003</ID>
    <Name>Arun</Name>
    <Designation>Support</Designation>
</Product>

<Product>
    <ID>004</ID>
    <Name>Swetha</Name>
    <Designation>Analyst</Designation>
</Product>

<Product>
    <ID>005</ID>
    <Name>Gokul</Name>
    <Designation>Maintainence</Designation>
</Product>
</xml>

I may need one like this.

What I have tried so far is below one.

                    using (var jw = new XmlTextWriter(sw)) //sw holds the o/p location to store the merged files 
                    {
                        jw.WriteStartElement("root");

                        int i = 0;
                        int c = list.Count();
                        foreach (var item in list)
                        {
                            if (i > 0)
                                await jw.WriteRawAsync("\r\n");

                            var blobdata = await OutputContainerService.GetContentAsync(input.InputLocation + "/" + item);
                            await jw.WriteRawAsync(blobdata);
                            i++;
                        }

                        jw.WriteEndElement();

                        await jw.FlushAsync();
                    }

How could I achieve this using C#.NET?

Answer 1

Option 1 :

1. Create Product Class
2. Populate the Product object with values by de-serializing the xml
3. Add the product object to List
4. Serialize the List

Option 2:

1. read the xml to XML Document
2. populate the product xml as xml node
3. Add the xml nodes to xml documents