CsvFieldMappingAttribute Class

Definition

Namespace: DataStandardizer.File.CSV

Declares a property as mapped to a CSV field. The mapping is discovered automatically when a mapper is created from a line model’s declarative attributes.

Syntax

[AttributeUsage(AttributeTargets.Property)]
public sealed class CsvFieldMappingAttribute : Attribute

Remarks

Combine with [TypeConverter] to attach a type converter to the field. For imperative configuration use CsvFileMappingBuilder instead.

Constructors

Constructor	Notes
`CsvFieldMappingAttribute()`	Maps by property name.
`CsvFieldMappingAttribute(int fieldIndex)`	Maps to a field by index. Throws `ArgumentOutOfRangeException` if `fieldIndex` is negative.
`CsvFieldMappingAttribute(string fieldName)`	Maps to a field by name.

Properties

Property	Signature	Notes
`ConstantValue`	`object? ConstantValue { get; set; }`	A constant value for the field.
`FieldIndex`	`int? FieldIndex { get; }`	The mapped field index, if set via the constructor.
`FieldName`	`string? FieldName { get; }`	The mapped field name, if set via the constructor.
`IsOptional`	`bool IsOptional { get; set; }`	`true` if the field is optional.

Applies to

Targets netstandard1.3, netstandard2.0, net8.0, and net10.0. The nullable reference annotations apply to the net8.0 and net10.0 builds.