c#深拷贝文件夹示例

using system;
using system.collections.generic;
using system.io;
using system.linq;
using system.text;
using system.text.regularexpressions;
using system.threading.tasks;

namespace fileutility
{
    public class program
    {
        public static void deepcopy(directoryinfo source, directoryinfo target, params string[] excludepatterns)
        {
            if (target.fullname.contains(source.fullname))
                return;

            // go through the directories and recursively call the deepcopy method for each one
            foreach (directoryinfo dir in source.getdirectories())
            {
                var dirname = dir.name;
                var shouldexclude = excludepatterns.aggregate(false, (current, pattern) => current || regex.match(dirname, pattern).success);

                if (!shouldexclude)
                    deepcopy(dir, target.createsubdirectory(dir.name), excludepatterns);
            }

            // go ahead and copy each file to the target directory
            foreach (fileinfo file in source.getfiles())
            {
                var filename = file.name;
                var shouldexclude = excludepatterns.aggregate(false,
                                                              (current, pattern) =>
                                                              current || regex.match(filename, pattern).success);

                if (!shouldexclude)
                    file.copyto(path.combine(target.fullname, filename));
            }
        }

        static void main(string[] args)
        {
            deepcopy(new directoryinfo(@"d:/test/b"), new directoryinfo(@"d:/test/a"));
            deepcopy(new directoryinfo(@"d:/test/c"), new directoryinfo(@"d:/test/c/c.1"));
            deepcopy(new directoryinfo(@"d:/test/1/"), new directoryinfo(@"d:/test/2/"), new string[] { ".*\\.txt" });

            console.writeline("复制成功...");
            console.readkey();
        }
    }
}