如何在 C# 中获取目录中的所有文件、子文件及其大小?
csharpserver side programmingprogramming更新于 2025/6/4 9:52:17
为了获取文件，C# 提供了一种方法 Directory.GetFiles
Directory.GetFiles 返回与指定搜索模式匹配的所有文件的名称(包括其路径)，并可选择搜索子目录。
在下面的示例中，* 匹配该位置的零个或多个字符。
SearchOption TopDirectoryOnly。仅搜索顶级目录
SearchOption AllDirectories。搜索所有顶级目录和子目录
FileInfo 获取文件信息，如长度、名称
示例 1
static void Main (string[] args) {
string rootPath = @"C:\Users\Koushik\Desktop\TestFolder";
var files = Directory.GetFiles(rootPath, "*.*", SearchOption.AllDirectories);
foreach (string file in files) {
Console.WriteLine(file);
}
Console.ReadLine ();
}
输出
C:\Users\Koushik\Desktop\TestFolder\TestFolderMain\TestFolderMain.txt C:\Users\Koushik\Desktop\TestFolder\TestFolderMain 1\TestFolderMain1.txt C:\Users\Koushik\Desktop\TestFolder\TestFolderMain 2\TestFolderMain2.txt C:\Users\Koushik\Desktop\TestFolder\TestFolderMain 2\TestFolderMainSubDirectory\TestFolderSubDirectory.txt
示例 2
static void Main (string[] args) {
string rootPath = @"C:\Users\Koushik\Desktop\TestFolder";
var files = Directory.GetFiles(rootPath, "*.*", SearchOption.TopDirectoryOnly);
foreach (string file in files) {
Console.WriteLine(file);
}
Console.ReadLine ();
}
输出
C:\Users\Koushik\Desktop\TestFolder\Topdirectory.txt
示例 3
static void Main (string[] args) {
string rootPath = @"C:\Users\Koushik\Desktop\TestFolder";
var files = Directory.GetFiles(rootPath, "*.*", SearchOption.AllDirectories);
foreach (string file in files) {
var info = new FileInfo(file);
Console.WriteLine($"{ Path.GetFileName(file) }: { info.Length } bytes");
}
Console.ReadLine ();
}
输出
Topdirectory.txt: 0 bytes TestFolderMain.txt: 0 bytes TestFolderMain1.txt: 10 bytes TestFolderMain2.txt: 20 bytes
