C# 拷贝，移动，获取文件夹信息

<p>  /// <summary>
        /// 返回指定目录下所有文件信息
        /// </summary>
        /// <param name="strDirectory">目录字符串</param>
        /// <returns></returns>
        public List<FileInfo> GetAllFilesInDirectory(string strDirectory)
        {
            List<FileInfo> listFiles = new List<FileInfo>(); //保存所有的文件信息
            DirectoryInfo directory = new DirectoryInfo(strDirectory);
            DirectoryInfo[] directoryArray = directory.GetDirectories();
            FileInfo[] fileInfoArray = directory.GetFiles();
            if (fileInfoArray.Length > 0) listFiles.AddRange(fileInfoArray);
            foreach (DirectoryInfo _directoryInfo in directoryArray)
            {
                DirectoryInfo directoryA = new DirectoryInfo(_directoryInfo.FullName);
                DirectoryInfo[] directoryArrayA = directoryA.GetDirectories();
                FileInfo[] fileInfoArrayA = directoryA.GetFiles();
                if (fileInfoArrayA.Length > 0) listFiles.AddRange(fileInfoArrayA);
                GetAllFilesInDirectory(_directoryInfo.FullName);//递归遍历
            }
            return listFiles;
        }
</p>

/// <summary>
/// 从一个目录将其内容移动到另一目录
/// </summary>
/// <param name="directorySource">源目录</param>
/// <param name="directoryTarget">目标目录</param>
private void MoveFolderTo(string directorySource, string directoryTarget)
{
//检查是否存在目的目录
if (!Directory.Exists(directoryTarget))
{
Directory.CreateDirectory(directoryTarget);
}
//先来移动文件
DirectoryInfo directoryInfo = new DirectoryInfo(directorySource);
FileInfo[] files = directoryInfo.GetFiles();
//移动所有文件
foreach (FileInfo file in files)
{
//如果自身文件在运行，不能直接覆盖，需要重命名之后再移动
if (File.Exists(Path.Combine(directoryTarget, file.Name)))
{
if (File.Exists(Path.Combine(directoryTarget, file.Name + ".bak")))
{
File.Delete(Path.Combine(directoryTarget, file.Name + ".bak"));
}
File.Move(Path.Combine(directoryTarget, file.Name), Path.Combine(directoryTarget, file.Name + ".bak"));

}
file.MoveTo(Path.Combine(directoryTarget, file.Name));

}
//最后移动目录
DirectoryInfo[] directoryInfoArray = directoryInfo.GetDirectories();
foreach (DirectoryInfo dir in directoryInfoArray)
{
MoveFolderTo(Path.Combine(directorySource, dir.Name), Path.Combine(directoryTarget, dir.Name));
}
}

/// <summary>
/// 从一个目录将其内容复制到另一目录
/// </summary>
/// <param name="directorySource">源目录</param>
/// <param name="directoryTarget">目标目录</param>
static void CopyFolderTo(string directorySource, string directoryTarget)
{
//检查是否存在目的目录
if (!Directory.Exists(directoryTarget))
{
Directory.CreateDirectory(directoryTarget);
}
//先来复制文件
DirectoryInfo directoryInfo = new DirectoryInfo(directorySource);
FileInfo[] files = directoryInfo.GetFiles();
//复制所有文件
foreach (FileInfo file in files)
{
file.CopyTo(Path.Combine(directoryTarget, file.Name));
}
//最后复制目录
DirectoryInfo[] directoryInfoArray = directoryInfo.GetDirectories();
foreach (DirectoryInfo dir in directoryInfoArray)
{
CopyFolderTo(Path.Combine(directorySource, dir.Name), Path.Combine(directoryTarget, dir.Name));
}
}