如何从VB.NET中搜索特定的字符串到文本文件中

问题描述

<pre><code></code>

推荐答案

Dim text As String = File.ReadAllText("D:\Temp\MyFile.txt")
Dim index As Integer = text.IndexOf("hello")
If index >= 0 Then
   ' String is in file, starting at character "index"
End If

还有其他方法，但这几乎是最简单的。

There are other ways, but that is pretty much the simplest.

//read file content in StreamReader
StreamReadertxt Reader = new StreamReader(fName);
szReadAll = txtReader.ReadToEnd();//Reads the whole text file to the end
txtReader.Close(); //Closes the text file after it is fully read.
txtReader = null;
//search word in file content
if (Regex.IsMatch(szReadAll, "SearchME", RegexOptions.IgnoreCase))//If the match is found in allRead
  MessageBox.Show("found");
else
  MessageBox.Show("not found");

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