Transform property name when writing header?

[ianrandell-sh]

Hi there.
Firstly CsvHelper works great for me and does almost everything I need. Thanks for creating it.

The last thing I need is to transform some property names when writing out the csv header.
In my case I need a csv header field to be "abc__r.xyz__c" - note the dot.
Obviously a c# property cannot be named as such, so I have used 4 underscores to replace it, such that the property name looks like this:

public class myDto
{
    public string abc__r____xyz__c { get; set; }
}

Is there anyway I can transform this so that in the csv it gets written out as:
abc__r.xyz__c

I have had a look through the code but couldn't see anything obvious.
Any ideas appreciated

[ianrandell-sh]

ah hang on - just found NameAttribute ....

[JoshClose]

You can can do that in a ClassMap as well.

[ianrandell-sh]

Ah k - thanks @JoshClose
So using that attribute on my models works in my case.

I guess it'd maybe be handy to be able to inject some kind of transformer (func) into the csvWriter.WriteHeader() call for specific scenarios. Eg. if you wanted to keep the csv writing part completely separate from the model's code (think custom nuget that internally uses CsvHelper).
This would mean that client code containing the models could be kept ignorant (of attributes and and typed maps).

This scenario is something I might run into in a couple of weeks when I need to break the CsvHelper-using code out.

Just a thought!

[JoshClose]

Instead of calling WriteHeader you can call WriteField and write the header by hand. Would that work?

[ianrandell-sh]

Using the overload that takes a type-converter? Possibly it would. Will let you know if I hit the issue.
Thanks for your responsiveness 👍