[C#] 計算資料夾容量

whitefox

一般計算一個資料夾容量大小用遞迴方式累加各個檔案容量大小

1. public static void CalculateDirectorySize(string DirPath, ref long TotalSize)
   
2. {
   
3.     foreach (string p in Directory.EnumerateDirectories(DirPath))
   
4.     {
   
5.         CalculateDirectorySize(p, ref totalSize);
   
6.     }
   
7.     foreach (FileInfo fi in new DirectoryInfo(DirPath).EnumerateFiles())
   
8.     {
   
9.         TotalSize += fi.Length;
   
10.     }
    
11. }

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還有另一個選擇使用Scripting.FileSystemObject，執行效率更高

1. public static long CalculateDirectorySize(string DirPath)
   
2. {
   
3.     try
   
4.     {
   
5.         Type tp = Type.GetTypeFromProgID("Scripting.FileSystemObject");
   
6.         object fso = Activator.CreateInstance(tp);
   
7.         object fd = tp.InvokeMember("GetFolder", BindingFlags.InvokeMethod, null, fso, new object[] { DirPath });
   
8.         long ret = Convert.ToInt64(tp.InvokeMember("Size", BindingFlags.GetProperty, null, fd, null));
   
9.         Marshal.ReleaseComObject(fso);
   
10.         return ret;
    
11.     }
    
12.     catch
    
13.     {
    
14.         return 0;
    
15.     }
    
16. }

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