FileSystem.FreeFile Method

Definition

Returns an Integer value that represents the next file number available for use by the FileOpen function.

public static int FreeFile ();
Returns

Returns an Integer value that represents the next file number available for use by the FileOpen function.

Exceptions

More than 255 files are in use.

Examples

This example uses the FreeFile function to return the next available file number. Five files are opened for output within the loop, and some sample data is written to each.

Dim count As Integer
Dim fileNumber As Integer
For count = 1 To 5
    fileNumber = FreeFile()
    FileOpen(fileNumber, "TEST" & count & ".TXT", OpenMode.Output)
    PrintLine(fileNumber, "This is a sample.")
    FileClose(fileNumber)
Next

Remarks

Use FreeFile to supply a file number that is not already being used.

Applies to

See Also