从txt更改特定行。文件 [英] Change a specific line from a txt. file

问题描述

我正在尝试根据所选索引更改特定行。但它不起作用。这就是我到目前为止所获得的 

 
 Dim lines（）As String = System.IO.File.ReadAllLines（" C：\\ \\ Users\User\source.txt"）
 Dim i As Integer = sourceList.SelectedIndex 
 lines（i）= sourceTextBox.Text 
 System.IO.File.WriteAllLines（" C：\ Users \User \source.txt"，lines）
 
 
 

解决方案

< blockquote>

您好

sourceList.SelectedIndex

和lines（） 之间的关系是什么？ ？ sourcelist包含什么？

对我来说这似乎不是一个好主意。

I am trying to change a specific line according to a selected index. However it does not work. This is what I got so far 

Dim lines() As String = System.IO.File.ReadAllLines("C:\Users\User\source.txt")
Dim i As Integer = sourceList.SelectedIndex
lines(i) = sourceTextBox.Text
System.IO.File.WriteAllLines("C:\Users\User\source.txt", lines)

解决方案

Hi

What is the relationship between sourceList.SelectedIndex

and lines()  ? What does sourcelist contain?

It doesn't seem like a good idea to me.

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