C# 文件夹拷贝 迭代

/// <summary>
/// 文件夹拷贝
/// </summary>
/// <param name="sourDir"></param>
/// <param name="projectID"></param>
/// <param name="programID"></param>
/// <returns></returns>
private static bool CopyTo(DirectoryInfo sourDi,DirectoryInfo destDi)
{
FileInfo[] arFile= sourDi.GetFiles();
for (int i = 0; i <= arFile.Length - 1; i++)
{
arFile[i].CopyTo(destDi.FullName + "\\" + arFile[i].Name,true);
}
DirectoryInfo[] arDi = sourDi.GetDirectories();
for (int i = 0; i <= arDi.Length - 1; i++)
{
if (!Directory.Exists(destDi + "\\" + arDi[i].Name)) Directory.CreateDirectory(destDi + "\\" + arDi[i].Name);
DirectoryInfo destSub =new DirectoryInfo(destDi + "\\" + arDi[i].Name);
CopyTo(arDi[i], destSub);
}
return true;
}