在文本文件中搜索

问题描述：

借助c Sharp中的控制台应用程序，我们可以在文本文件中搜索数据.

请帮助！

With the help of console application in c sharp can we search our data in a text file.

plesse help !

答

string path = @"c:\somedir";
string searchtext = "something";
DirectoryInfo di = new DirectoryInfo(path);
FileInfo[] files = di.GetFiles("*.txt");
foreach (FileInfo file in files)
{
    using (StreamReader sr = new StreamReader(file.FullName))
    {
        string content = sr.ReadToEnd().ToLower();
        if(content.Contains(searchtext.ToLower()))
            Console.WriteLine("{0} contains \"{1}\"",file.Name,searchtext);
        else
            Console.WriteLine("{0} does not contain \"{1}\"", file.Name, searchtext);
    }
}

您可以使用 RegularExpressions.Regex.IsMatch
在文本文件中进行搜索首先在StreamReader中获取文件并读取其内容

You can search in textfiles using RegularExpressions.Regex.IsMatch
First get the file in StreamReader and read it''s content

System.IO.StreamReader reader = new System.IO.StreamReader(file);
String text = reader.ReadToEnd();

使用正则表达式搜索文本

use Regular expression to search the text

if (System.Text.RegularExpressions.Regex.IsMatch(text, searchText))
{
    Console.WriteLine("word found");
}

在文本文件中搜索

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