我使用
CsvHelper
读取和写入CSV文件,这是伟大的,但我不明白如何只写选择的类型字段.
说我们有
using CsvHelper.Configuration; namespace Project { public class DataView { [CsvField(Name = "N")] public string ElementId { get; private set; } [CsvField(Name = "Quantity")] public double ResultQuantity { get; private set; } public DataView(string id,double result) { ElementId = id; ResultQuantity = result; } } }
我们想从我们目前通过以下类似的生成的CSV文件中排除“Quantity”CsvField:
using (var myStream = saveFileDialog1.OpenFile()) { using (var writer = new CsvWriter(new StreamWriter(myStream))) { writer.Configuration.Delimiter = '\t'; writer.WriteHeader(typeof(ResultView)); _researchResults.ForEach(writer.WriteRecord); } }
我可以用什么来动态地从CSV中排除类型字段?
解决方法
你可以这样做:
using (var myStream = saveFileDialog1.OpenFile()) { using (var writer = new CsvWriter(new StreamWriter(myStream))) { writer.Configuration.AttributeMapping(typeof(DataView)); // Creates the CSV property mapping writer.Configuration.Properties.RemoveAt(1); // Removes the property at the position 1 writer.Configuration.Delimiter = "\t"; writer.WriteHeader(typeof(DataView)); _researchResults.ForEach(writer.WriteRecord); } }
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