Visual Basic中的文本文件处理 [英] Text File Handling in Visual Basic

问题描述

我有一个包含分隔记录的文本文件.

I have a text file contains delimited records.

1243;jhhf';982u4k;9u2349;huf8
kij;9238u;98ur23;jfwf;03i24

我需要用数据库或其他来源返回的值替换每条记录的第4部分的值.

I need to replace the value of 4th part from every record with the value returned from database or someother source.

有任何线索吗?期待 VB代码

推荐答案

您可以尝试一下(用C#编写):

You could try this (written in C#):

C#版本

List<string> newLines = new List<string>();
string[] lines = File.ReadAllLines(filename);
foreach (string line in lines)
{
     string[] parts = line.Split(";".ToCharArray());
     parts[3] = string_from_db;
     newLines.Add(String.Join(";", parts));
}
File.WriteAllLines(filename, newLines.ToArray());

VB.NET版本

Dim newLines As List(Of String) = New List(Of String)
Dim lines As String() = File.ReadAllLines(filename)
For Each line As String In lines
    Dim parts As String() = line.Split(";")
    parts(3) = string_from_db
    newLines.Add(String.Join(";", parts))
Next
File.WriteAllLines(filename, newLines.ToArray())

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