如何按部分名称c＃查找文件夹和文件

在我的硬盘驱动器的特定文件夹中，我已经存储了许多其他子文件夹和文件。 现在我想按部分名称列出这些文件夹和文件名。

for example -------------- c webapi xx folder c mvctutorial xx folder done webapi xx folder webapi done folder webapi.zip file mvc.iso file 

现在，当我想通过部分名称webapi搜索，然后我想获得具有webapi字的文件和文件夹名称列表。 我想在网格中显示他们的完整文件夹或文件名及其完整路径和大小。 喜欢以下方式。

 Name Type location Size ----- ------ --------- ------- c webapi xx folder c:\test1 2 KB c mvctutorial xx folder c:\test3 3 KB done webapi xx folder c:\test1 11 KB webapi done folder c:\test1 9 KB webapi.zip file c:\test1 20 KB mvc.iso file c:\test4 5 KB 

我有一个示例代码，看起来像查找文件，但下面的代码可能找不到文件夹。 所以我正在寻找一个可以找到文件和文件夹的示例代码。 所以指导我解决我的问题。

下面的示例代码将查找文件，但不确定它是否按部分名称查找文件。 这是代码。 我不是在开发环境之前。 所以无法测试下面的代码。

找到文件代码

 static void Main(string[] args) { string partialName = "webapi"; DirectoryInfo hdDirectoryInWhichToSearch = new DirectoryInfo(@"c:\"); FileInfo[] filesInDir = hdDirectoryInWhichToSearch.GetFiles("*" + partialName + "*.*"); foreach (FileInfo foundFile in filesInDir) { string fullName = foundFile.FullName; Console.WriteLine(fullName); } } 

Answer 1

如果只需要全名，可以使用更通用的类型“FileSystemInfo”。

 static void Main(string[] args) { string partialName = "webapi"; DirectoryInfo hdDirectoryInWhichToSearch = new DirectoryInfo(@"c:\"); FileSystemInfo[] filesAndDirs = hdDirectoryInWhichToSearch.GetFileSystemInfos("*" + partialName + "*"); foreach (FileSystemInfo foundFile in filesAndDirs) { string fullName = foundFile.FullName; Console.WriteLine(fullName); } } 

编辑：如果你需要特殊类型的方法，你仍然可以在for循环中转换为：

 foreach (FileSystemInfo foundFile in filesAndDirs) { string fullName = foundFile.FullName; Console.WriteLine(fullName); if (foundFile.GetType() == typeof(FileInfo)) { Console.WriteLine("... is a file"); FileInfo fileInfo = (FileInfo)foundFile; Console.WriteLine("Extension: " + fileInfo.Extension); } if (foundFile.GetType() == typeof(DirectoryInfo)) { Console.WriteLine("... is a directory"); DirectoryInfo directoryInfo = (DirectoryInfo)foundFile; FileInfo[] subfileInfos = directoryInfo.GetFiles(); } } 

Answer 2

DirectoryInfo[] GetDirectories(string searchPattern)中还有一个DirectoryInfo[] GetDirectories(string searchPattern)方法：

 static void Main(string[] args) { string partialName = "webapi"; DirectoryInfo hdDirectoryInWhichToSearch = new DirectoryInfo(@"c:\"); FileInfo[] filesInDir = hdDirectoryInWhichToSearch.GetFiles("*" + partialName + "*.*"); DirectoryInfo[] dirsInDir = hdDirectoryInWhichToSearch.GetDirectories("*" + partialName + "*.*"); foreach (FileInfo foundFile in filesInDir) { string fullName = foundFile.FullName; Console.WriteLine(fullName); } foreach (DirectoryInfo foundDir in dirsInDir ) { string fullName = foundDir.FullName; Console.WriteLine(fullName); } } 

Answer 3

正如其他人所说，使用DirectoryInfo.GetDirectories和DirectoryInfo.GetFiles方法，但记得使用SearchOptions.AllDirectories来递归搜索子目录。

 try { const string searchQuery = "*" + "keyword" + "*"; const string folderName = @"C:\Folder"; var directory = new DirectoryInfo(folderName); var directories = directory.GetDirectories(searchQuery, SearchOption.AllDirectories); var files = directory.GetFiles(searchQuery, SearchOption.AllDirectories); foreach (var d in directories) { Console.WriteLine(d); } foreach (var f in files) { Console.WriteLine(f); } } catch (Exception e) { // } 

Answer 4

这里有一个使用递归函数列出给定目录中所有文件的示例代码。 只需使用string.Contains方法为文件夹和文件名称编写比较部分。

这是上面链接中给出的代码。

 // For Directory.GetFiles and Directory.GetDirectories // For File.Exists, Directory.Exists using System; using System.IO; using System.Collections; public class RecursiveFileProcessor { public static void Main(string[] args) { foreach(string path in args) { if(File.Exists(path)) { // This path is a file ProcessFile(path); } else if(Directory.Exists(path)) { // This path is a directory ProcessDirectory(path); } else { Console.WriteLine("{0} is not a valid file or directory.", path); } } } // Process all files in the directory passed in, recurse on any directories // that are found, and process the files they contain. public static void ProcessDirectory(string targetDirectory) { // Process the list of files found in the directory. string [] fileEntries = Directory.GetFiles(targetDirectory); foreach(string fileName in fileEntries) ProcessFile(fileName); // Recurse into subdirectories of this directory. string [] subdirectoryEntries = Directory.GetDirectories(targetDirectory); foreach(string subdirectory in subdirectoryEntries) ProcessDirectory(subdirectory); } // Insert logic for processing found files here. public static void ProcessFile(string path) { Console.WriteLine("Processed file '{0}'.", path); } } 

Answer 5

我完成了一个答案示例代码的完整代码。 所以在这里我想发布完整的代码。

 namespace PatternSearch { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private long GetDirectorySize(string folderPath) { DirectoryInfo di = new DirectoryInfo(folderPath); return di.EnumerateFiles("*.*", SearchOption.AllDirectories).Sum(fi => fi.Length); } private void btnSearch_Click(object sender, EventArgs e) { List oLst = new List(); string partialName = "webapi"; DirectoryInfo hdDirectoryInWhichToSearch = new DirectoryInfo(@"C:\MyFolder"); FileSystemInfo[] filesAndDirs = hdDirectoryInWhichToSearch.GetFileSystemInfos("*" + partialName + "*"); foreach (FileSystemInfo foundFile in filesAndDirs) { string fullName = foundFile.FullName; Console.WriteLine(fullName); if (foundFile.GetType() == typeof(FileInfo)) { FileInfo fileInfo = (FileInfo)foundFile; oLst.Add(new FileList { Name = fileInfo.Name, Type = "File", location = fileInfo.FullName, Size = Format.ByteSize(fileInfo.Length) }); } if (foundFile.GetType() == typeof(DirectoryInfo)) { Console.WriteLine("... is a directory"); DirectoryInfo directoryInfo = (DirectoryInfo)foundFile; FileInfo[] subfileInfos = directoryInfo.GetFiles(); oLst.Add(new FileList { Name = directoryInfo.Name, Type = "Folder", location = directoryInfo.FullName, Size = Format.ByteSize(GetDirectorySize(directoryInfo.FullName)) }); } } dataGridView1.DataSource = oLst; } } public class FileList { public string Name { get; set; } public string Type { get; set; } public string location { get; set; } public string Size { get; set; } } public static class Format { static string[] sizeSuffixes = { "B", "KB", "MB", "GB", "TB" }; public static string ByteSize(long size) { string SizeText = string.Empty; const string formatTemplate = "{0}{1:0.#} {2}"; if (size == 0) { return string.Format(formatTemplate, null, 0, "Bytes"); } var absSize = Math.Abs((double)size); var fpPower = Math.Log(absSize, 1000); var intPower = (int)fpPower; var iUnit = intPower >= sizeSuffixes.Length ? sizeSuffixes.Length - 1 : intPower; var normSize = absSize / Math.Pow(1000, iUnit); switch (sizeSuffixes[iUnit]) { case "B": SizeText= "Bytes"; break; case "KB": SizeText = "Kilo Bytes"; break; case "MB": SizeText = "Mega Bytes"; break; case "GB": SizeText = "Giga Bytes"; break; case "TB": SizeText = "Tera Bytes"; break; default: SizeText = "None"; break; } return string.Format( formatTemplate, size < 0 ? "-" : null, normSize, SizeText ); } } }