To create XML file automatically need to follow some steps:

1. First Setup the Database:

setting up the database is necessary. make sure the database you setting up is properly configured.

2. Create a model

In the ASP.NET MVC application, create a model that represents the data structure of the database table.

3. Database Operations.

Now implement the database operations like insert, delete, update using entity framework which will involves in creating, deleting and updating the records in database.

4. XML Operations

Now for each database operations, will need to perform XML operations as name shows. Use the ‘System.Xml’ namespace in C# to work with XML data.

1. Create XML File: When a new record is inserted into the database, you'll create a new XML file and populate it with data from the newly inserted database record. You can use the XmlDocument class to create and manipulate XML data.
2. Update XML File: When a record is updated in the database, you need to locate the corresponding XML file (e.g., based on a unique identifier) and update the data in the XML file to match the updated database record. Load the XML, make the necessary changes, and save it back.

For deleting and Updating that XML file base on Record.

Update XML File on Record Update:

When a record is updated in the database, you can locate the corresponding XML file (based on a unique identifier, such as the record's primary key), update the data in the XML file to match the updated database record, and save the XML file.Update XML File on Record Update:  Need to do some codings.

// Assuming you have the updated record available in the 'updatedRecord' variable
// Load the XML file
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("path/to/your/xmlfile.xml");

// Find the node to update (based on some identifier)
XmlNode nodeToUpdate = xmlDoc.SelectSingleNode("/root/node[@id='1']");

// Update the node's data
nodeToUpdate["Name"].InnerText = updatedRecord.Name;
// Update other data as needed

// Save the updated XML
xmlDoc.Save("path/to/your/xmlfile.xml");
 

Delete XML File on Record Deletion:

When a record is deleted from the database, locate the corresponding XML file and delete it. Here's how you can delete an XML file in C#:

// Assuming you have the ID of the record to delete
int recordIdToDelete = 1; // Replace with the actual ID
string xmlFilePathToDelete = $"path/to/your/xmlfile_{recordIdToDelete}.xml";

if (System.IO.File.Exists(xmlFilePathToDelete))
{
   System.IO.File.Delete(xmlFilePathToDelete);
}
 

Handle Errors and Edge Cases:

Just like with the insert operation, be sure to handle errors and edge cases when updating and deleting XML files. This includes scenarios where the XML file does not exist or if there are issues with the XML file manipulation.

Testing:

Thoroughly test your code to ensure that XML files are correctly updated when records are updated in the database and deleted when records are deleted.

Consider Using a Unique Identifier:

To ensure that you can easily locate the corresponding XML file for each record, consider using a unique identifier (e.g., the record's primary key) as part of the XML file's name or content. This will make it easier to match database records with XML files.