FileLen Function

Returns a Long value specifying the length of a file in bytes.

The My feature gives you greater productivity and performance in file I/O operations than FileLen. For more information, see My.Computer.FileSystem.GetFileInfo Method.

Public Function FileLen(ByVal PathName As String) As Long

Parameters

  • PathName
    Required. String expression that specifies a file. PathName may include the directory or folder, and the drive.

Exceptions

Exception type

Error number

Condition

FileNotFoundException

53

File does not exist.

See the "Error number" column if you are upgrading Visual Basic 6.0 applications that use unstructured error handling. (You can compare the error number against the Number Property (Err Object).) However, when possible, you should consider replacing such error control with Structured Exception Handling Overview for Visual Basic.

Remarks

If the specified file is open when the FileLen function is called, the value returned represents the size of the file at the time it was opened.

Note

To obtain the current length of an open file, use the LOF function.

Example

This example uses the FileLen function to return the length of a file in bytes. For purposes of this example, assume that TestFile is a file containing some data.

Dim MySize AsĀ LongĀ 
' Returns file length (bytes).
MySize = FileLen("TESTFILE")

Smart Device Developer Notes

This function is not supported.

Requirements

Namespace:Microsoft.VisualBasic

**Module:**FileSystem

Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)

See Also

Reference

FileDateTime Function

GetAttr Function

LOF Function

FileNotFoundException

Other Resources

File, Directory, and Drive Properties in Visual Basic