当前位置:首页 > IT技术 > Windows编程 > 正文

【C#】获取文件信息汇总
2021-09-23 17:45:24

一、删除文件或文件夹

File.Delete(fileName);
Directory.Delete(fileName, true);

/// <summary>
        /// 删除文件夹以及文件
        /// </summary>
        /// <param name="directoryPath"> 文件夹路径 </param>
        /// <param name="fileName"> 文件名称 </param>
        public static void DeleteDirectory(string directoryPath, string fileName)
        {

            //删除文件
            for (int i = 0; i < Directory.GetFiles(directoryPath).ToList().Count; i++)
            {
                if (Directory.GetFiles(directoryPath)[i] == fileName)
                {
                    File.Delete(fileName);
                }
            }

            //删除文件夹
            for (int i = 0; i < Directory.GetDirectories(directoryPath).ToList().Count; i++)
            {
                if (Directory.GetDirectories(directoryPath)[i] == fileName)
                {
                    Directory.Delete(fileName, true);
                }
            }
        }

https://www.cnblogs.com/foreverfendou/p/9667497.html

 

二、获取文件夹下所有的子文件

DirectoryInfo dirInfo = new DirectoryInfo(DirectoryPath);

FileInfo[] fileInfos = dirInfo.GetFiles();
foreach (FileInfo fileInfo in fileInfos)
{
   //fileInfo.Name
}

DirectoryInfo[] dirInfos = dirInfo.GetDirectories();
foreach (DirectoryInfo dirInfo1 in dirInfos)
{
   //dirInfo1.FullName
}

 

(1) https://blog.csdn.net/zhulongxi/article/details/51318910

(2) https://q.cnblogs.com/q/9527/


三、获取当前应用程序所在路径及环境变量

//获取应用程序的当前工作目录
string str3=Directory.GetCurrentDirectory();


//获取或设置包含该应用程序的目录的名称。
string str7=AppDomain.CurrentDomain.SetupInformation.ApplicationBase


//获取启动了应用程序的可执行文件的路径,不包括可执行文件的名称
string str5=Application.StartupPath;

https://www.cnblogs.com/xz4062006/p/4245474.html

 

四、排序

(1)文件排序

1、按名称顺序排列

  /// <summary>
  /// C#按文件名排序(顺序)
  /// </summary>
  /// <param name="arrFi">待排序数组</param>
  private void SortAsFileName(ref FileInfo[] arrFi)
  {
    Array.Sort(arrFi, delegate(FileInfo x, FileInfo y) { return x.Name.CompareTo(y.Name); });
  }
 
  调用方法:
 
  private void SortFiles()
  {
    string filePath = "E:\";
    DirectoryInfo di = new DirectoryInfo(filePath);
 
    FileInfo[] arrFi = di.GetFiles("*.*");
    SortAsFileName(ref arrFi);
 
    for (int i = 0; i < arrFi.Length; i++)
      Response.Write(arrFi[i].Name + ":<br />");
  }

 

2、按名称倒序排列

/// <summary>
  /// C#按文件名排序(倒序)
  /// </summary>
  /// <param name="arrFi">待排序数组</param>
  private void SortAsFileName(ref FileInfo[] arrFi)
  {
    Array.Sort(arrFi, delegate(FileInfo x, FileInfo y) { return y.Name.CompareTo(x.Name); });
  }

 

3、按创建时间顺序排列

  /// <summary>
  /// C#按创建时间排序(顺序)
  /// </summary>
  /// <param name="arrFi">待排序数组</param>
  private void SortAsFileCreationTime(ref FileInfo[] arrFi)
  {
    Array.Sort(arrFi, delegate(FileInfo x, FileInfo y) { return x.CreationTime.CompareTo(y.CreationTime); });
  }

 

4、按创建时间倒序排列

  /// <summary>
  /// C#按创建时间排序(倒序)
  /// </summary>
  /// <param name="arrFi">待排序数组</param>
  private void SortAsFileCreationTime(ref FileInfo[] arrFi)
  {
    Array.Sort(arrFi, delegate(FileInfo x, FileInfo y) { return y.CreationTime.CompareTo(x.CreationTime); });
  }

 

(2)文件夹排序

1、按名称顺序排列

  /// <summary>
  /// C#按文件夹名称排序(顺序)
  /// </summary>
  /// <param name="dirs">待排序文件夹数组</param>
  private void SortAsFolderName(ref DirectoryInfo[] dirs)
  {
    Array.Sort(dirs, delegate(DirectoryInfo x, DirectoryInfo y) { return x.Name.CompareTo(y.Name); });
  }
 
  调用方法:
 
  private void FolderSort()
  {
    string filePath = "E:\";
    DirectoryInfo di = new DirectoryInfo(filePath);
 
    DirectoryInfo[] arrDir = di.GetDirectories();
    SortAsFolderName(ref arrDir);
 
    for (int i = 0; i < arrDir.Length; i++)
      Response.Write(arrDir[i].Name + ":<br />");
  }

 

2、按名称倒序排列

 

  /// <summary>
  /// C#按文件夹名称排序(倒序)
  /// </summary>
  /// <param name="dirs">待排序文件夹数组</param>
  private void SortAsFolderName(ref DirectoryInfo[] dirs)
  {
    Array.Sort(dirs, delegate(DirectoryInfo x, DirectoryInfo y) { return y.Name.CompareTo(x.Name); });
  }

 

3、按创建时间顺序排列

 

  /// <summary>
  /// C#按文件夹夹创建时间排序(顺序)
  /// </summary>
  /// <param name="dirs">待排序文件夹数组</param>
  private void SortAsFolderCreationTime(ref DirectoryInfo[] dirs)
  {
    Array.Sort(dirs, delegate(DirectoryInfo x, DirectoryInfo y) { return x.CreationTime.CompareTo(y.CreationTime); });
  }

 

4、按创建时间倒序排列

  /// <summary>
  /// C#按文件夹创建时间排序(倒序)
  /// </summary>
  /// <param name="dirs">待排序文件夹数组</param>
  private void SortAsFolderCreationTime(ref DirectoryInfo[] dirs)
  {
    Array.Sort(dirs, delegate(DirectoryInfo x, DirectoryInfo y) { return y.CreationTime.CompareTo(x.CreationTime); });
  }

https://blog.csdn.net/sy95122/article/details/93971483

本文摘自 :https://www.cnblogs.com/

开通会员,享受整站包年服务立即开通 >