C# gets the file size

Little scum · Posted on 3/24/2016 5:14:17 PM

Of course, you need to introduce System.IO namespace

The first one:

public static long GetDirectoryLength(string dirPath)
{
Determine if a given path exists and exit if it does not
if (! Directory.Exists(dirPath))
return 0;
long len = 0;

//定义一个DirectoryInfo对象
DirectoryInfo di = new DirectoryInfo(dirPath);

Use the GetFiles method to get the size of all files in the di directory
foreach (FileInfo fi in di.GetFiles())
{
len += fi. Length;
}

Get all the folders in the di and save them to a new array of objects for recursion
DirectoryInfo[] dis = di.GetDirectories();
if (dis. Length > 0)
{
for (int i = 0; i < dis. Length; i++)
{
len += GetDirectoryLength(dis. FullName);
}
}
return len;
}

The second

It also uses the idea of recursion, but it is judged by the Exits method of the File class

//所给路径中所对应的是否为文件

public static long FileSize(string filePath)
{
long temp = 0;

//判断当前路径所指向的是否为文件
if (File.Exists(filePath) == false)
{
string[] str1 = Directory.GetFileSystemEntries(filePath);
foreach (string s1 in str1)
{
temp += FileSize(s1);
}
}
else
{

Define a FileInfo object to associate it with the file direction pointed to by the filePath,

//以获取其大小
FileInfo fileInfo = new FileInfo(filePath);
return fileInfo.Length;
}
return temp;
}

In fact, the idea of deleting a folder is the same as this, the setting is much simpler, just simply judge whether it is a file or a folder, if it is a file, delete it. If it is a folder, it is recursive

[Source] C# gets the file size

Related Posts

Sections viewed