Search text files for string

tig2810

Hi all
This sounds easy and I'm sure it is but i'm just having so much trouble. I have a directory with text files. I want to search the text files for a string and return the name of the file that containes the string. I've tried various way below ut unsuccessfully. Please could someone take a look and offer some assistance?
thanks

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            string directory = @"D:\SearchFolder";

            DirectoryInfo dirinfo = new DirectoryInfo(directory);
 
            FileInfo[] files = dirinfo.GetFiles("EE*.PRN");
 
            foreach (FileInfo i in files)

            {                

                List<string> lines = File.ReadAllLines(i.ToString().ToList());

                foreach (string line in lines)

                {

                    if (line.Contains("UNIQUESTRING"))

                        textBox2.Text += i + "contains" + line.ToString() + Environment.NewLine;

                }
 
                //Regex.Match(i, "UNIQUESTRING");

                //if (Regex.Match(i, "UNIQUESTRING")) 

                //{

                //    MessageBox.Show("File with regex is : " + i);

                //}
 
                //string ex = null;

                //ex = (from line in File.ReadAllLines(i)

                //      where line == "UNIQUESTRING"

                //      select line).ToString();
 
        }

tlhintoq

Are you actually looking for the word "UNIQUESTRING" in all upper case?
Or is UNIQUESTRING meant to be a variable thus shouldn't have quotes around it?

.Contains is case-sensitive so could that be the issue? You are searching for upper case in a lower case file?

tig2810

Yes, the string would be in all uppercase. The contents of the text files are also in uppercase.

tig2810

I should probably add that the snippet of code does not compile as i'm having some more type problems.

tlhintoq

Well... yeah... Not compiling will keeping it from finding what you are searching for.

insertAlias

This should help:

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 string path = @"c:\dev\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);

    }

}

This is written for a console app, so you will have to make appropriate changes.

Search text files for string

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re: Search text files for string

re: Search text files for string

re: Search text files for string

re: Search text files for string

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