FileAttr Function
Returns an enumeration representing the file mode for files opened using the FileOpen function.
The My.Computer.FileSystem Object gives you greater productivity and performance in file I/O operations than the FileAttr function. See My.Computer.FileSystem.GetFileInfo Method for more information.
Public Function FileAttr(ByVal FileNumber As Integer) As OpenMode
Parameters
- FileNumber
Required. Integer. Any valid file number.
Exceptions
Exception type |
Error number |
Condition |
|---|---|---|
FileNumber does not exist. |
||
File mode is invalid. |
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.
Return Value
The following enumeration values indicate the file access mode:
Value |
Mode |
|---|---|
1 |
OpenMode.Input |
2 |
OpenMode.Output |
4 |
OpenMode.Random |
8 |
OpenMode.Append |
32 |
OpenMode.Binary |
Remarks
This function returns an enumeration representing the file mode for files opened using the FileOpen function.
Example
This example uses the FileAttr function to return the file mode of an open file.
Dim mode As OpenMode
FileOpen(1, "c:\TESTFILE.TXT", OpenMode.Input)
mode = FileAttr(1)
MsgBox("The file mode is " & mode.ToString())
FileClose(1)
Smart Device Developer Notes
This function is not supported.
Requirements
Namespace: Microsoft.VisualBasic
**Module:**FileSystem
Assembly: Visual Basic Runtime Library (in Microsoft.VisualBasic.dll)