다음을 통해 공유

FileInfo.Length 속성

  • 참조

정의

네임스페이스:
System.IO
어셈블리:
mscorlib.dll, System.IO.FileSystem.dll
어셈블리:
System.IO.FileSystem.dll
어셈블리:
System.Runtime.dll
어셈블리:
mscorlib.dll
어셈블리:
netstandard.dll
Source:
FileInfo.cs
Source:
FileInfo.cs
Source:
FileInfo.cs

현재 파일의 크기(바이트)를 가져옵니다.

public:
 property long Length { long get(); };
public long Length { get; }
member this.Length : int64
Public ReadOnly Property Length As Long

속성 값

Int64

현재 파일의 크기(바이트)입니다.

예외

IOException

Refresh()가 파일이나 디렉터리의 상태를 업데이트할 수 없는 경우

FileNotFoundException

파일이 없습니다.

또는

Length 속성이 디렉터리에 대해 호출되는 경우

예제

다음 예제에서는 지정된 파일의 크기를 표시합니다.

// The following example displays the names and sizes
// of the files in the specified directory.
using namespace System;
using namespace System::IO;
int main()
{
   
   // Make a reference to a directory.
   DirectoryInfo^ di = gcnew DirectoryInfo( "c:\\" );
   
   // Get a reference to each file in that directory.
   array<FileInfo^>^fiArr = di->GetFiles();
   
   // Display the names and sizes of the files.
   Console::WriteLine( "The directory {0} contains the following files:", di->Name );
   System::Collections::IEnumerator^ myEnum = fiArr->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      FileInfo^ f = safe_cast<FileInfo^>(myEnum->Current);
      Console::WriteLine( "The size of {0} is {1} bytes.", f->Name, f->Length );
   }
}
//This code produces output similar to the following; 
//results may vary based on the computer/file structure/etc.:
//
//The directory c:\ contains the following files:
//The size of MyComputer.log is 274 bytes.
//The size of AUTOEXEC.BAT is 0 bytes.
//The size of boot.ini is 211 bytes.
//The size of CONFIG.SYS is 0 bytes.
//The size of hiberfil.sys is 1072775168 bytes.
//The size of IO.SYS is 0 bytes.
//The size of MASK.txt is 2700 bytes.
//The size of mfc80.dll is 1093632 bytes.
//The size of mfc80u.dll is 1079808 bytes.
//The size of MSDOS.SYS is 0 bytes.
//The size of NTDETECT.COM is 47564 bytes.
//The size of ntldr is 250032 bytes.
//The size of pagefile.sys is 1610612736 bytes.
//The size of UpdatePatch.log is 22778 bytes.
//The size of UpdatePatch.txt is 30 bytes.
//The size of wt3d.ini is 234 bytes.

// The following example displays the names and sizes
// of the files in the specified directory.
using System;
using System.IO;

public class FileLength
{
    public static void Main()
    {
        // Make a reference to a directory.
        DirectoryInfo di = new DirectoryInfo("c:\\");
        // Get a reference to each file in that directory.
        FileInfo[] fiArr = di.GetFiles();
        // Display the names and sizes of the files.
        Console.WriteLine("The directory {0} contains the following files:", di.Name);
        foreach (FileInfo f in fiArr)
            Console.WriteLine("The size of {0} is {1} bytes.", f.Name, f.Length);
    }
}
//This code produces output similar to the following;
//results may vary based on the computer/file structure/etc.:
//
//The directory c:\ contains the following files:
//The size of MyComputer.log is 274 bytes.
//The size of AUTOEXEC.BAT is 0 bytes.
//The size of boot.ini is 211 bytes.
//The size of CONFIG.SYS is 0 bytes.
//The size of hiberfil.sys is 1072775168 bytes.
//The size of IO.SYS is 0 bytes.
//The size of MASK.txt is 2700 bytes.
//The size of mfc80.dll is 1093632 bytes.
//The size of mfc80u.dll is 1079808 bytes.
//The size of MSDOS.SYS is 0 bytes.
//The size of NTDETECT.COM is 47564 bytes.
//The size of ntldr is 250032 bytes.
//The size of pagefile.sys is 1610612736 bytes.
//The size of UpdatePatch.log is 22778 bytes.
//The size of UpdatePatch.txt is 30 bytes.
//The size of wt3d.ini is 234 bytes.

' The following example displays the names and sizes
' of the files in the specified directory.
Imports System.IO

Public Class FileLength

    Public Shared Sub Main()
        ' Make a reference to a directory.
        Dim di As New DirectoryInfo("c:\")
        ' Get a reference to each file in that directory.
        Dim fiArr As FileInfo() = di.GetFiles()
        ' Display the names and sizes of the files.
        Dim f As FileInfo
        Console.WriteLine("The directory {0} contains the following files:", di.Name)
        For Each f In fiArr
            Console.WriteLine("The size of {0} is {1} bytes.", f.Name, f.Length)
        Next f
    End Sub
End Class

'This code produces output similar to the following; 
'results may vary based on the computer/file structure/etc.:
'
'The directory c:\ contains the following files:
'The size of MyComputer.log is 274 bytes.
'The size of AUTOEXEC.BAT is 0 bytes.
'The size of boot.ini is 211 bytes.
'The size of CONFIG.SYS is 0 bytes.
'The size of hiberfil.sys is 1072775168 bytes.
'The size of IO.SYS is 0 bytes.
'The size of MASK.txt is 2700 bytes.
'The size of mfc80.dll is 1093632 bytes.
'The size of mfc80u.dll is 1079808 bytes.
'The size of MSDOS.SYS is 0 bytes.
'The size of NTDETECT.COM is 47564 bytes.
'The size of ntldr is 250032 bytes.
'The size of pagefile.sys is 1610612736 bytes.
'The size of UpdatePatch.log is 22778 bytes.
'The size of UpdatePatch.txt is 30 bytes.
'The size of wt3d.ini is 234 bytes.

설명

개체의 Length 현재 instance 다음 DirectoryInfo 메서드에서 반환된 경우 속성 값 FileInfo 이 미리 캐시됩니다.

최신 값을 얻으려면 메서드를 호출합니다 Refresh .

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