我想从textfile中读取特定行数 [英] I want to read specific number of lines from textfile

问题描述

HI，

i我正在将文本文件的内容读取到vb.the文本文件有大约100行，但我想只阅读前10行怎么做。



Dim TextBox1 As String：TextBox1 =D：\ temp.txt

Dim lines1（）As String = System.IO.File.ReadAllLines（TextBox1）



i能够读取完整的txt文件内容，但我只需要10行。



我尝试过：



Dim TextBox1 As String：TextBox1 =D：\ temp.txt

Dim lines1（）As String = System.IO.File.ReadAllLines（TextBox1）



i能够读取完整的txt文件内容，但我只需要10行。

i am reading the contents of textfile to vb.the textfile has around 100 lines,but i want to read only first 10 lines how to do it.

Dim TextBox1 As String : TextBox1 = "D:\temp.txt"
Dim lines1() As String = System.IO.File.ReadAllLines(TextBox1)

i am able to read full txt file contents,but i need only 10 lines of it.

What I have tried:

Dim TextBox1 As String : TextBox1 = "D:\temp.txt"
Dim lines1() As String = System.IO.File.ReadAllLines(TextBox1)

i am able to read full txt file contents,but i need only 10 lines of it.

推荐答案

迭代使用 StreamReader.ReadLine [ ^ ]方法。

c＃ - 如何读取文本文件中的指定行？ - 堆栈溢出 [ ^ ]



示例代码

c# - How do I read a specified line in a text file? - Stack Overflow[^]

sample code

Dim line As String = File.ReadLines(FileName).Take(10).First()

Dim line As String = File.ReadLines(FileName).Skip(14).Take(1).First()

如果你想只阅读10行，请使用：

If you want to read 10 first lines only, please use this:

Dim lines = File.ReadLines(FileName).Take(10).ToList() 'returns List(Of String)

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