How to read ragged right files using file helpers library

Question

I have to read ragged right files is there any way to read them using file helpers library

my Code is like this

[FixedLengthRecord()]

    class File_load
    {
        [FieldFixedLength(10)]
        [FieldTrim(TrimMode.Right)] 
        public string proj_name;

        [FieldFixedLength(30)]
        [FieldTrim(TrimMode.Right)] 
        public string iso;

        [FieldFixedLength(50)]
        [FieldTrim(TrimMode.Right)] 
        public string line;

        [FieldFixedLength(50)]
        [FieldTrim(TrimMode.Right)] 
        public string pid;

    }

if i don't use FieldFixedLength for last column it is throwing exception

Unhandled Exception: FileHelpers.BadUsageException: The record class marked with the FixedLengthRecord attribute must include a FixedLength attribute in each fi eld.

Answer 1

You can handle your scenario with the FixedMode.AllowLessChars parameter of the FixedLengthRecord attribute.

Here is a working program (I changed your field lengths to 2 for the example).

[FixedLengthRecord(FixedMode.AllowLessChars)]
class File_load
{
    [FieldFixedLength(2)]
    [FieldTrim(TrimMode.Right)]
    public string proj_name;

    [FieldFixedLength(2)]
    [FieldTrim(TrimMode.Right)]
    public string iso;

    [FieldFixedLength(2)]
    [FieldTrim(TrimMode.Right)]
    public string line;

    [FieldFixedLength(1000)]
    [FieldTrim(TrimMode.Right)]
    public string pid;

}

class Program
{
    static void Main(string[] args)
    {
        var engine = new FileHelperEngine<File_load>();

        var records = engine.ReadString(
           "112233444444" + Environment.NewLine +
           "1122334"
        );

        var firstRecord = records[0];
        Assert.AreEqual("11", firstRecord.proj_name);
        Assert.AreEqual("22", firstRecord.iso);
        Assert.AreEqual("33", firstRecord.line);
        Assert.AreEqual("444444", firstRecord.pid);

        var secondRecord = records[1];
        Assert.AreEqual("11", secondRecord.proj_name);
        Assert.AreEqual("22", secondRecord.iso);
        Assert.AreEqual("33", secondRecord.line);
        Assert.AreEqual("4", secondRecord.pid);

        Console.Read();
    }
}