Filehelpers

Question

我可能在搜索时错过了答案，但我有一个文件需要所有字段都用双引号引起来，除非字段为空白、缺失或为空，否则只会输入逗号。

我正在使用 [FieldQuoted('"', QuoteMode.AlwaysQuoted)] 示例输出如下：

"Mary","Smith","555-555-5555","","1234","","3141 Pi Cr."

但我需要输出看起来像这样：

"Mary","Smith","555-555-5555",,"1234",,"3141 Pi Cr."

有使用 Filehelpers 的建议吗？

Answer 1

您可以使用 INotifyWrite 事件在写入文件之前修改输出。

例如

[DelimitedRecord(",")]
class Product : INotifyWrite // <-- implement events
{
    [FieldQuoted(QuoteMode.AlwaysQuoted)]
    public string Name;
    [FieldQuoted(QuoteMode.AlwaysQuoted)]
    public string Description;
    [FieldQuoted(QuoteMode.AlwaysQuoted)]
    public string Size;

    public void BeforeWrite(BeforeWriteEventArgs e)
    {
    }

    public void AfterWrite(AfterWriteEventArgs e)
    {
        // replace any occurrences of ,"", with ,,
        e.RecordLine = e.RecordLine.Replace(",\"\",", ",,");
    }
}

Answer 2

用这个解决问题：

[FieldQuoted('"', QuoteMode.OptionalForWrite)]

Filehelpers - 在每个字段周围用双引号导出，除非字段为 blank/null

Filehelpers - Export with double quotes around each field EXCEPT when field is blank/null

c#