如何在 C# 中将文件复制到目录中?
csharpserver side programmingprogramming更新于 2025/6/4 11:52:17
要复制文件，C# 提供了一种方法 File.Copy
File.Copy 有 2 个重载
Copy(String, String) - 将现有文件复制到新文件。不允许覆盖同名文件。
Copy(String, String, Boolean) 将现有文件复制到新文件。允许覆盖同名文件。
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。
示例
static void Main (string[] args) {
string rootPath = @"C:\Users\Koushik\Desktop\TestFolder\TestFolderMain1";
var searchSourceFolder = Directory.GetFiles(rootPath, "*.*", SearchOption.TopDirectoryOnly);
Console.WriteLine("-------------Source Folder-------------");
foreach (string file in searchSourceFolder){
Console.WriteLine(file);
}
string destinationFolder = @"C:\Users\Koushik\Desktop\TestFolder\TestFolderMain2\";
var destinationFolderFiles = Directory.GetFiles(destinationFolder, "*.*", SearchOption.TopDirectoryOnly);
Console.WriteLine("-------------Destination Folder Before Copying-------------");
foreach (string file in destinationFolderFiles){
Console.WriteLine(file);
}
string[] files = Directory.GetFiles(rootPath);
foreach (string file in files){
File.Copy(file, $"{destinationFolder}{ Path.GetFileName(file) }");
}
Console.WriteLine("-------------After Copying-------------");
var destinationFolderAfterCopyingFiles = Directory.GetFiles(destinationFolder, "*.*", SearchOption.TopDirectoryOnly);
foreach (string file in destinationFolderAfterCopyingFiles){
Console.WriteLine(file);
}
Console.ReadLine ();
}
输出
-------------Source Folder------------- C:\Users\Koushik\Desktop\TestFolder\TestFolderMain1\TestFolderMain1.txt -------------Destination Folder Before Copying------------- C:\Users\Koushik\Desktop\TestFolder\TestFolderMain2\TestFolderMain2.txt -------------After Copying------------- C:\Users\Koushik\Desktop\TestFolder\TestFolderMain2\TestFolderMain1.txt C:\Users\Koushik\Desktop\TestFolder\TestFolderMain2\TestFolderMain2.txt
