C#：文件、文件夹特别操作

#region 计算文件夹大小

/// <summary>
/// 计算文件夹大小
/// </summary>
/// <param name="dirPath">文件夹</param>
/// <returns></returns>
public long CalculateDirSize(string dirPath)
{
long sumSize = 0;
try
{
if (!Directory.Exists(dirPath))
{
DirectoryInfo dirInfo = new DirectoryInfo(dirPath);
FileInfo[] files = dirInfo.GetFiles();
foreach (FileInfo fInfo in files)
{
sumSize += fInfo.Length;
}
DirectoryInfo[] dirs = dirInfo.GetDirectories();
foreach (DirectoryInfo dInfo in dirs)
{
sumSize += CalculateDirSize(dInfo.FullName);
}
}
}
catch (Exception ex)
{
LogHelper.Instance.Error("计算文件夹大小(" + dirPath + ")出错：" + ex.Message);
}
return sumSize;
}