Gets last write time for a file.

     
/*
 * Filename:    FileUtil.cs
 * Product:     Versioning Controlled Build
 * Solution:    BuildAutoIncrement
 * Project:     Shared
 * Description: File utility methods.
 * Copyright:   Julijan ?ribar, 2004-2007
 * 
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the author(s) be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */
using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;

namespace BuildAutoIncrement {

    /// <summary>
  /// A set of file utilities.
  /// </summary>
  public struct FileUtil {

        /// <summary>
        ///   Gets last write time for a file.
        /// </summary>
        /// <param name="fileName">
        ///   Filename for which operation is requested.
        /// </param>
        /// <returns>
        ///   <c>DateTime</c> structure.
        /// </returns>
        public static DateTime GetLastWriteTime(string fileName) {
      Debug.Assert(fileName != null);
      Debug.Assert(File.Exists(fileName));
      FileInfo fileInfo = new FileInfo(fileName);
      return fileInfo.LastWriteTime;
        }
  }
}

1.	C# Implementation of the File Copy Command
2.	Use the FileInfo Class to Delete Files with Ease
3.	File Move Implementation
4.	Rename File Name
5.	Rename File Extension
6.	Backup File
7.	Copy directory
8.	Find string in a file
9.	Converts a number of bytes to a shorter, more readable string representation
10.	Compares the specified file1. This method accepts two strings the represent two files to compare.
11.	File Renamer
12.	Format File Size
13.	Is File Existed
14.	Is File readable or writeable
15.	Replace in file
16.	Send a file to the recycle bin
17.	Copy file and folder
18.	Execute File
19.	Gets the file size text.
20.	Get File Bytes And Readable Size Information
21.	Copy folder
22.	Empty a Folder

Gets last write time for a file. : File Command « File Stream « C# / C Sharp

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