Frequent Asked Questions

Here you find the most common problems that you can find using this lib.

	Vs.net say: "The type or namespace name 'FileHelperEngine' could not be found"
	You must add a reference to the FileHelpers.dll:
	Vs.net say: "The type or namespace name 'DelimitedRecord' could not be found (are you missing a using directive or an assembly reference?)"
	You must add an using or imports directive: C#: using FileHelpers VB.NET: Imports FileHelpers
	I got a BadUsageException when instanciate a FileHelperEngine class
	The exception message say you what attribute or condition is wrong.
	How can indicate that a file is quoted with "..." or other char ?
	You must use the FieldQuotedAttribute like this: [FieldQuoted] public string CustomerName
	I have a file with fixed format what attributes must use ?
	You must use the FixedLengthRecordAttribute for the class and the FieldFixedLengthAttribute for the fields: [FixedLengthRecord] public class OrdersFixed { [FieldFixedLength(7)] public int OrderID; [FieldFixedLength(12)] public string CustomerID; ....
	I have a file with a delimiter what attributes must use ?
	You must use the DelimitedRecordAttribute for the class and the FieldDelimiterAttribute for the fields: [DelimitedRecord("|")] public class OrdersFixed { public int OrderID; public string CustomerLastName; public int CustomerFisrt; ...
	How i can set the field date format ?
	You must use the ConverterAttribute with the format: [FieldConverter(ConverterKind.Date, "ddMMyyyy" )] public DateTime ShippedDate; [FieldConverter(ConverterKind.Date, "MMddyyyy" )] public DateTime ShippedDate; [FieldConverter(ConverterKind.Date, "d/M/yyyy" )] public DateTime ShippedDate; [FieldConverter(ConverterKind.Date, "d-M-yy" )] public DateTime ShippedDate;
	My files has a header line, how i can ignore it ?
	You can use the IgnoreFirstAttribute. [IgnoreFirst] // Discard one line public class OrdersVerticalBar { ... [IgnoreFirst(2)] // Discard two lines public class OrdersVerticalBar { ...
	When I use the ExcelStorage I get a type not defined error...
	You need to add a reference to the FileHelpers.ExcelStorage.dll because the ExcelStorage class is defined in this assembly. Remember you don't must to reference to the Interop files directly.
	I need that the library include a new feature or documentation ?
	Go to the Contact Page and send me a mail with your ideas, if the feature is easy or useful i add it to the FileHelpers.

More questions ?? search it below or send your question to the list.

See also

Must Read - Quick Start Guide - Attributes List - F.A.Q. - Examples of Use - Contacts & Credits - Donations

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