Csvhelper: How to ignore case in latest version?

[TommoDotCommo]

This no longer works for me:

// Ignore case
csv.Configuration.PrepareHeaderForMatch = header => header.ToLower();

It appears that PrepareHeaderForMatch used to be:

Func<string, string> PrepareHeaderForMatch { get; set; }

but it's now:

Func<string, int, string> PrepareHeaderForMatch { get; set; }

I wish I knew more, but it just tells me this delegate does not accept one argument.

[JoshClose]

The second argument is the index position of the header that is being passed in. Change to:

csv.Configuration.PrepareHeaderForMatch = (header, index) => header.ToLower();

I will add the names of the arguments to the Intellisense description.

[RichardPoes]

Can't this be implemented in a way that both the new and the old way work? This way by updating, not everyone's code breaks

[JoshClose]

That's why there was a major version number change. There were some other breaking changes in that release also.

Not sure if there was a non-breaking way to do it since it's a property. If it was a method, an overload could have been created, or a default parameter, but not with a property.

[Lroca88]

@JoshClose could you update your Getting Started section?
Still has this:
csv.Configuration.PrepareHeaderForMatch = (string header) => header.ToLower();

[JoshClose]

@Lroca88 updated

[augustoproiete]

@JoshClose Docs have been updated and this issue can be closed.