FileInfo - ReadLines
Reads the lines of a file.
public static string FileName = "test.txt"; public static void Main() { SaveFile(); // C# Extension Method: FileInfo - ReadLines var lines = FileName.ToFileInfo().ReadLines(); foreach(string line in lines) { Console.WriteLine(line); } } private static void SaveFile() { var html = @"<!DOCTYPE html> <html> <body> <h1>This is <b>bold</b> heading</h1> <p>This is <u>underlined</u> paragraph</p> <h2>This is <i>italic</i> heading</h2> </body> </html> "; html.SaveAs(FileName); }
View Source
using System; using System.Collections.Generic; using System.IO; using System.Text; public static partial class Extensions { /// <summary> /// Reads the lines of a file. /// </summary> /// <param name="this">The file to read.</param> /// <returns>All the lines of the file, or the lines that are the result of a query.</returns> /// ### /// <exception cref="T:System.ArgumentException"> /// <paramref name="this" /> is a zero-length string, contains only /// white space, or contains one or more invalid characters defined by the /// <see /// cref="M:System.IO.Path.GetInvalidPathChars" /> /// method. /// </exception> /// ### /// <exception cref="T:System.ArgumentNullException"> /// <paramref name="this" /> is null. /// </exception> /// ### /// <exception cref="T:System.IO.DirectoryNotFoundException"> /// <paramref name="this" /> is invalid (for example, it /// is on an unmapped drive). /// </exception> /// ### /// <exception cref="T:System.IO.FileNotFoundException"> /// The file specified by <paramref name="this" /> was not /// found. /// </exception> /// ### /// <exception cref="T:System.IO.IOException">An I/O error occurred while opening the file.</exception> /// ### /// <exception cref="T:System.IO.PathTooLongException"> /// <paramref name="this" /> exceeds the system-defined /// maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names /// must be less than 260 characters. /// </exception> /// ### /// <exception cref="T:System.Security.SecurityException">The caller does not have the required permission.</exception> /// ### /// <exception cref="T:System.UnauthorizedAccessException"> /// <paramref name="this" /> specifies a file that is /// read-only.-or-This operation is not supported on the current platform.-or- /// <paramref /// name="this" /> /// is a directory.-or-The caller does not have the required permission. /// </exception> public static IEnumerable<String> ReadLines(this FileInfo @this) { return File.ReadLines(@this.FullName); } /// <summary> /// Read the lines of a file that has a specified encoding. /// </summary> /// <param name="this">The file to read.</param> /// <param name="encoding">The encoding that is applied to the contents of the file.</param> /// <returns>All the lines of the file, or the lines that are the result of a query.</returns> /// ### /// <exception cref="T:System.ArgumentException"> /// <paramref name="this" /> is a zero-length string, contains only /// white space, or contains one or more invalid characters as defined by the /// <see /// cref="M:System.IO.Path.GetInvalidPathChars" /> /// method. /// </exception> /// ### /// <exception cref="T:System.ArgumentNullException"> /// <paramref name="this" /> is null. /// </exception> /// ### /// <exception cref="T:System.IO.DirectoryNotFoundException"> /// <paramref name="this" /> is invalid (for example, it /// is on an unmapped drive). /// </exception> /// ### /// <exception cref="T:System.IO.FileNotFoundException"> /// The file specified by <paramref name="this" /> was not /// found. /// </exception> /// ### /// <exception cref="T:System.IO.IOException">An I/O error occurred while opening the file.</exception> /// ### /// <exception cref="T:System.IO.PathTooLongException"> /// <paramref name="this" /> exceeds the system-defined /// maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names /// must be less than 260 characters. /// </exception> /// ### /// <exception cref="T:System.Security.SecurityException">The caller does not have the required permission.</exception> /// ### /// <exception cref="T:System.UnauthorizedAccessException"> /// <paramref name="this" /> specifies a file that is /// read-only.-or-This operation is not supported on the current platform.-or- /// <paramref /// name="this" /> /// is a directory.-or-The caller does not have the required permission. /// </exception> public static IEnumerable<String> ReadLines(this FileInfo @this, Encoding encoding) { return File.ReadLines(@this.FullName, encoding); } }