How can CsvHelper be configured to ignore a footer row that differs from the data rows?

Question

I have a CSV file with a record count row at the end

id|key|limit
123|1|591
456|2|921
record_count|2

When I run this with CsvHelper using a class map it throws an exception when it gets to the record_count|2 row. I'm working around it by configuring a ReadingExceptionOccurred handler to ignore that row.

csvConfig.ReadingExceptionOccurred = ex =>
{
    if (ex.Exception.Context.Parser.RawRecord.Contains("record_count"))
    {
        return false;
    }

    return true;
};

This works but is there is a more "standard" method for handling this footer record?

Answer 1

You could use ShouldSkipRecord in the configuration.

void Main()
{
    var config = new CsvConfiguration(CultureInfo.InvariantCulture)
    {
        Delimiter = "|",
        ShouldSkipRecord = args => args.Record[0] == "record_count"
    };
    
    using (var reader = new StringReader("id|key|limit\n123|1|591\n456|2|921\nrecord_count|2"))
    using (var csv = new CsvReader(reader, config))
    {      
        var records = csv.GetRecords<Foo>().Dump();
    }
}

public class Foo
{
    public int id { get; set; }
    public int key { get; set; }
    public int limit { get; set; }
}