CSV represents records as lines with comma-separated fields. A practical importer reads the input stream line by line, parses each line into customer data, and ignores lines that do not contain exactly three values: email, customer name, and license. section 7.4.1
Customer batch import
A C# CsvImporter receives a Stream and repository dependency, reads each line asynchronously, and checks the parsed email against the repository. It creates a customer when none exists; otherwise, it updates the existing customer’s name and license. section 7.4.1
Listing 7.18 Customer class
public class Customer #1
{
public int Id { get; set; } #2
public string Email { get; set; }
public string Name { get; set; }
public string License { get; set; }
}
Browse the focused C# implementation that reads CSV lines, skips malformed records, and selects repository create or update operations. section 7.4.1
