CsvHelper: No members are mapped for type

Question

I use CsvHelper 4.0.3.

I have a nested class defined like this:

private class CsvLine {
    public string Solution;
    public string Project;
    public string DependsOnProject;
    public string Weight;
    public string DependsOnPackage;
    public string PackageVersion;
}

My .csv file, which I want to parse using CsvHelper, has these field names:

Solution,Project,DependsOnProject,Weight,DependsOnPackage,PackageVersion

Here is my code:

TextReader readFile = new StreamReader(dependenciesCsvFilePath);
var csvReader = new CsvReader(readFile);
IEnumerable<CsvLine> records = csvReader.GetRecords<CsvLine>();

According to the documentation here, the code above should work.

However, when I inspect records, I see the message No members are mapped for type 'ParentClass+CsvLine'.

I changed the accessibility of CsvLine from private to public, but that made no difference.

What did I do wrong?

EDIT: I have tried un-nesting the CsvLine class and making it public, but that did not help either.

EDIT: I made the changes as Nkosi suggested; however, now it says that records is an empty collection: "Enumeration yielded no results". There are definitely data present inside my .csv file, so the collection shouldn't be empty.

Here are some sample data:

Solution,Project,DependsOnProject,Weight,DependsOnPackage,PackageVersion
FOD.sln,ABC.DEF,IMS.ABC,1,,
FOD.sln,ABC.DEF,IMS.DEF,1,,
FOD.sln,ABC.DEF,IMS.GHI,1,,
FOD.sln,ABC.DEF,IMS.JKL,1,,

EDIT: Solved! Nkosi's and Panagiotis' answers complement each other's.

Answer 1

You need to use Properties instead of fields in the object model as by default, it will map the matching public members

public class CsvLine {
    public string Solution { get; set; }
    public string Project { get; set; }
    public string DependsOnProject { get; set; }
    public string Weight { get; set; }
    public string DependsOnPackage { get; set; }
    public string PackageVersion { get; set; }
}

You should also read up on mapping your classes to the csv file.

CsvHelper: Class Mapping