File.ReadLines Method : File « File Stream « C# / C Sharp

1. C# / C Sharp
2. File Stream
3. File

File.ReadLines Method

 

using System;
using System.IO;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
            var files = from file in Directory.EnumerateFiles(@"c:\","*.txt", SearchOption.AllDirectories)
                        from line in File.ReadLines(file)
                        where line.Contains("a")
                        select new
                        {
                            File = file,
                            Line = line
                        };

            foreach (var f in files)
            {
                Console.WriteLine("{0}\t{1}", f.File, f.Line);
            }
      Console.WriteLine("{0} files found.", 
        files.Count().ToString());
    }
}

   
  

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9.	Uses methods in the File class to check the status of a file
10.	File Class
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12.	File.AppendAllText Opens a file, appends the specified string to the file
13.	File.AppendAllText Method Appends the string to the file, creating the file if it does not exist.
14.	File.AppendText Creates a StreamWriter that appends UTF-8 encoded text to an existing file.
15.	File.Copy Method Copies file to a new file
16.	File.Create Creates or overwrites a file in the specified path.
17.	File.Create Method (String, Int32) Creates or overwrites the specified file.
18.	File.CreateText Method Creates or opens a file for writing UTF-8 encoded text.
19.	File.Decrypt Decrypts a file
20.	File.Exists Determines whether the specified file exists.
21.	File.GetAccessControl Gets a FileSecurity object that encapsulates the access control list
22.	File.GetAttributes Method Gets the FileAttributes of the file on the path.
23.	File.GetCreationTime Method Returns the creation date and time of the specified file or directory.
24.	File.GetLastAccessTime Method Returns the date and time the specified file or directory was last accessed.
25.	File.GetLastWriteTime Returns the date and time the specified file or directory was last written to.
26.	File.Move Moves a file to a new location
27.	File.Open Opens a FileStream on the specified path with read/write access.
28.	File.Open Method (String, FileMode, FileAccess)
29.	File.Open Method (String, FileMode, FileAccess, FileShare)
30.	File.OpenRead Method Opens an existing file for reading.
31.	File.OpenText Method Opens an existing UTF-8 encoded text file for reading.
32.	File.OpenWrite Method Opens an existing file or creates a new file for writing.
33.	File.ReadAllLines Method Opens a text file, reads all lines of the file, and then closes the file.
34.	File.ReadAllLines Method (String, Encoding)
35.	File.Replace Replaces contents of file
36.	File.SetLastAccessTime Sets the date and time the specified file was last accessed.
37.	File.SetLastWriteTime