Linq to Entities写入文件流或文本文件 [英] Linq to Entities write to Filestream or Text File

问题描述

我想不使用For Each循环将结果集写入文本文件.是否有更快，更有效的方式将Linq传输到实体或将Linq传输到对象?

I would like to write my result set to a text file without using a For Each Loop. Is there a quicker more efficient way to stream Linq to Entities or Linq to Objects?

推荐答案

我要假设您需要将IEnumerable(Of String)存储到用逗号分隔的文件.使用Aggregate扩展可以相当直接地做到这一点.

I am going to assume you need to store an IEnumerable(Of String) into a file separated by comma. This can be done fairly directly using the Aggregate extension.

' We need to write the IEnumerable(Of String) SourceCollection into the text file "Numbers.txt"
        My.Computer.FileSystem.WriteAllText("numbers.txt", SourceCollection.Aggregate(Function(item, aggregator) String.Format("{1},{0}", aggregator, item)), False)

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