public static void DelectDir(string srcPath)
{
    try
    {
        DirectoryInfo dir = new DirectoryInfo(srcPath);
        FileSystemInfo[] fileinfo = dir.GetFileSystemInfos(); //返回目录中所有文件和子目录
        foreach (FileSystemInfo i in fileinfo)
        {
            if (i is DirectoryInfo) //判断是否文件夹
            {
                DirectoryInfo subdir = new DirectoryInfo(i.FullName);
                subdir.Delete(true); //删除子目录和文件
            }
            else
            {
                File.Delete(i.FullName); //删除指定文件
            }
        }

    }
    catch (Exception e)
    {
        throw;
    }
}